Merge https://github.com/friendica/red into pending_merge

32 files changed, 2897 insertions, 2892 deletions

diff --git a/boot.php b/boot.php
index 25738192d..d82efe68a 100755
--- a/boot.php
+++ b/boot.php
@@ -52,13 +52,11 @@ define ( 'ZOT_REVISION',            1     );
 define ( 'DB_UPDATE_VERSION',       1140  );
 
 /**
- * Constant with a HTML line break.
+ * @brief Constant with a HTML line break.
  *
  * Contains a HTML line break (br) element and a real carriage return with line
  * feed for the source.
  * This can be used in HTML and JavaScript where needed a line break.
- *
- * @var string
  */
 define ( 'EOL',                    '<br>' . "\r\n"        );
 define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z'       );
@@ -707,8 +705,6 @@ class App {
 	 *
 	 * Mostly unimplemented yet. Only options 'template_engine' and
 	 * beyond are used.
-	 *
-	 * @var array
 	 */
 	private $theme = array(
 		'sourcename' => '',
@@ -721,15 +717,11 @@ class App {
 	);
 
 	/**
-	 * array of registered template engines ('name'=>'class name')
-	 *
-	 * @var array
+	 * @brief An array of registered template engines ('name'=>'class name')
 	 */
 	public $template_engines = array();
 	/**
-	 * array of instanced template engines ('name'=>'instance')
-	 *
-	 * @var array
+	 * @brief An array of instanced template engines ('name'=>'instance')
 	 */
 	public $template_engine_instance = array();
 
@@ -806,9 +798,7 @@ class App {
 		if(substr($this->cmd, 0, 1) === '~')
 			$this->cmd = 'channel/' . substr($this->cmd, 1);
 
-
-		/**
-		 *
+		/*
 		 * Break the URL path into C style argc/argv style arguments for our
 		 * modules. Given "http://example.com/module/arg1/arg2", $this->argc
 		 * will be 3 (integer) and $this->argv will contain:
@@ -816,25 +806,22 @@ class App {
 		 *   [1] => 'arg1'
 		 *   [2] => 'arg2'
 		 *
-		 *
 		 * There will always be one argument. If provided a naked domain
 		 * URL, $this->argv[0] is set to "home".
-		 *
 		 */
 
-		$this->argv = explode('/',$this->cmd);
+		$this->argv = explode('/', $this->cmd);
 		$this->argc = count($this->argv);
-		if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
+		if ((array_key_exists('0', $this->argv)) && strlen($this->argv[0])) {
 			$this->module = str_replace(".", "_", $this->argv[0]);
 			$this->module = str_replace("-", "_", $this->module);
-		}
-		else {
+		} else {
 			$this->argc = 1;
 			$this->argv = array('home');
 			$this->module = 'home';
 		}
 
-		/**
+		/*
 		 * See if there is any page number information, and initialise
 		 * pagination
 		 */
@@ -846,7 +833,7 @@ class App {
 			$this->pager['start'] = 0;
 		$this->pager['total'] = 0;
 
-		/**
+		/*
 		 * Detect mobile devices
 		 */
 
@@ -858,7 +845,7 @@ class App {
 
 		BaseObject::set_app($this);
 
-		/**
+		/*
 		 * register template engines
 		 */
 		$dc = get_declared_classes();
@@ -2029,7 +2016,7 @@ function curPageURL() {
  * @return mixed
  */
 function get_custom_nav(&$a, $navname) {
-	if(! $navname)
+	if (! $navname)
 		return $a->page['nav'];
 	// load custom nav menu by name here
 }
@@ -2045,7 +2032,7 @@ function get_custom_nav(&$a, $navname) {
 function load_pdl(&$a) {
 	require_once('include/comanche.php');
 
-	if(! count($a->layout)) {
+	if (! count($a->layout)) {
 		$n = 'mod_' . $a->module . '.pdl' ;
 		$u = comanche_get_channel_id();
 		if($u)
@@ -2071,7 +2058,6 @@ function exec_pdl(&$a) {
 }
 
 
-
 /**
  * @brief build the page.
  *
@@ -2081,7 +2067,6 @@ function exec_pdl(&$a) {
  */
 function construct_page(&$a) {
 
-
 	exec_pdl($a);
 
 	$comanche = ((count($a->layout)) ? true : false);
@@ -2090,28 +2075,27 @@ function construct_page(&$a) {
 
 	$installing = false;
 
-	if($a->module == 'setup') {
+	if ($a->module == 'setup') {
 		$installing = true;
 	} else {
 		nav($a);
 	}
 
-	if($comanche) {
-
-		if($a->layout['nav']) {
+	if ($comanche) {
+		if ($a->layout['nav']) {
 			$a->page['nav'] = get_custom_nav($a, $a->layout['nav']);
 		}
 	}
 
-	if(($p = theme_include(current_theme() . '.js')) != '')
+	if (($p = theme_include(current_theme() . '.js')) != '')
 		head_add_js($p);
 
-	if(($p = theme_include('mod_' . $a->module . '.php')) != '')
+	if (($p = theme_include('mod_' . $a->module . '.php')) != '')
 		require_once($p);
 
 	require_once('include/js_strings.php');
 
-	if(x($a->page, 'template_style'))
+	if (x($a->page, 'template_style'))
 		head_add_css($a->page['template_style'] . '.css');
 	else
 		head_add_css(((x($a->page, 'template')) ? $a->page['template'] : 'default' ) . '.css');
@@ -2148,7 +2132,6 @@ function construct_page(&$a) {
 		call_hooks('construct_page', $arr);
 		$a->layout = $arr['layout'];
 
-
 		foreach($a->layout as $k => $v) {
 			if((strpos($k, 'region_') === 0) && strlen($v)) {
 				if(strpos($v, '$region_') !== false) {
@@ -2250,11 +2233,11 @@ function get_directory_realm() {
  */
 function get_directory_primary() {
 
-   $dirmode = intval(get_config('system','directory_mode'));
+	$dirmode = intval(get_config('system','directory_mode'));
 
-    if($dirmode == DIRECTORY_MODE_STANDALONE || $dirmode == DIRECTORY_MODE_PRIMARY) {
+	if($dirmode == DIRECTORY_MODE_STANDALONE || $dirmode == DIRECTORY_MODE_PRIMARY) {
 		return z_root();
-    }
+	}
 
 	if($x = get_config('system', 'directory_primary'))
 		return $x;
@@ -2263,13 +2246,11 @@ function get_directory_primary() {
 }
 
 
-
 /**
- * @brief return relative date of last completed poller execution
+ * @brief return relative date of last completed poller execution.
  */
-
 function get_poller_runtime() {
-	$t = get_config('system','lastpoll');
+	$t = get_config('system', 'lastpoll');
 	return relative_date($t);
 }
 
@@ -2303,7 +2284,12 @@ function z_check_cert() {
 } 
 
 
-
+/**
+ * @brief Send email to admin if server has an invalid certificate.
+ *
+ * If a RedMatrix hub is available over https it must have a publicly valid
+ * certificate.
+ */
 function cert_bad_email() {
 
 	$a = get_app();
@@ -2320,13 +2306,12 @@ function cert_bad_email() {
 		'From: Administrator' . '@' . $a->get_hostname() . "\n"
 		. 'Content-type: text/plain; charset=UTF-8' . "\n"
 		. 'Content-transfer-encoding: 8bit' );
-
 }
 
 
-// send warnings every 3-5 days if cron is not running.
-
-
+/**
+ * @brief Send warnings every 3-5 days if cron is not running.
+ */
 function check_cron_broken() {
 
 	$t = get_config('system','lastpollcheck');
diff --git a/include/ITemplateEngine.php b/include/ITemplateEngine.php
index 53c1845f4..7bd559a63 100755
--- a/include/ITemplateEngine.php
+++ b/include/ITemplateEngine.php
@@ -1,11 +1,10 @@
-<?php

-require_once 'boot.php';

-

-

-/**

- * Interface for template engines

- */

-interface ITemplateEngine {

-	public function replace_macros($s,$v);

-	public function get_markup_template($file, $root='');

-}

+<?php
+require_once 'boot.php';
+
+/**
+ * @brief Interface for template engines.
+ */
+interface ITemplateEngine {
+	public function replace_macros($s, $v);
+	public function get_markup_template($file, $root='');
+}
diff --git a/include/account.php b/include/account.php
index caac0b178..5926e05c1 100644
--- a/include/account.php
+++ b/include/account.php
@@ -1,4 +1,8 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/account.php
+ * @brief Somme account related functions.
+ */
 
 require_once('include/config.php');
 require_once('include/network.php');
@@ -43,15 +47,14 @@ function check_account_email($email) {
 function check_account_password($password) {
 	$result = array('error' => false, 'message' => '');
 
-	// The only validation we perform by default is pure Javascript to 
+	// The only validation we perform by default is pure Javascript to
 	// check minimum length and that both entered passwords match.
-	// Use hooked functions to perform complexity requirement checks. 
+	// Use hooked functions to perform complexity requirement checks.
 
 	$arr = array('password' => $password, 'result' => $result);
 	call_hooks('check_account_password', $arr);
 
 	return $arr['result'];
-
 }
 
 function check_account_invite($invite_code) {
@@ -75,7 +78,6 @@ function check_account_invite($invite_code) {
 	call_hooks('check_account_invite', $arr);
 
 	return $arr['result'];
-
 }
 
 function check_account_admin($arr) {
@@ -109,7 +111,7 @@ function create_account($arr) {
 	$flags       = ((x($arr,'account_flags')) ? intval($arr['account_flags'])      : ACCOUNT_OK);
 	$roles       = ((x($arr,'account_roles')) ? intval($arr['account_roles'])      : 0 );
 	$expires     = ((x($arr,'expires'))       ? intval($arr['expires'])            : NULL_DATE);
-	
+
 	$default_service_class = get_config('system','default_service_class');
 
 	if($default_service_class === false)
@@ -132,16 +134,16 @@ function create_account($arr) {
 	// allow the admin_email account to be admin, but only if it's the first account.
 
 	$c = account_total();
-	if(($c === 0) && (check_account_admin($arr)))
+	if (($c === 0) && (check_account_admin($arr)))
 		$roles |= ACCOUNT_ROLE_ADMIN;
 
-    // Ensure that there is a host keypair.
+	// Ensure that there is a host keypair.
 
-    if((! get_config('system','pubkey')) && (! get_config('system','prvkey'))) {
-        $hostkey = new_keypair(4096);
-        set_config('system','pubkey',$hostkey['pubkey']);
-        set_config('system','prvkey',$hostkey['prvkey']);
-    }
+	if ((! get_config('system', 'pubkey')) && (! get_config('system', 'prvkey'))) {
+		$hostkey = new_keypair(4096);
+		set_config('system', 'pubkey', $hostkey['pubkey']);
+		set_config('system', 'prvkey', $hostkey['prvkey']);
+	}
 
 	$invite_result = check_account_invite($invite_code);
 	if($invite_result['error']) {
@@ -180,7 +182,6 @@ function create_account($arr) {
 		dbesc($roles),
 		dbesc($expires),
 		dbesc($default_service_class)
-
 	);
 	if(! $r) {
 		logger('create_account: DB INSERT failed.');
@@ -195,7 +196,7 @@ function create_account($arr) {
 	if($r && count($r)) {
 		$result['account'] = $r[0];
 	}
-	else {	
+	else {
 		logger('create_account: could not retrieve newly created account');
 	}
 
@@ -215,8 +216,8 @@ function create_account($arr) {
 	$result['success']  = true;
 	$result['email']    = $email;
 	$result['password'] = $password;
-	return $result;
 
+	return $result;
 }
 
 
@@ -255,7 +256,6 @@ function verify_email_address($arr) {
 		logger('send_reg_approval_email: failed to ' . $admin['email'] . 'account_id: ' . $arr['account']['account_id']);
 
 	return $res;
-
 }
 
 
@@ -292,7 +292,6 @@ function send_reg_approval_email($arr) {
 
 	$details = (($ip) ? $ip . ' [' . gethostbyaddr($ip) . ']' : '[unknown or stealth IP]');
 
-
 	$delivered = 0;
 
 	foreach($admins as $admin) {
@@ -346,11 +345,14 @@ function send_verification_email($email,$password) {
 	return($res ? true : false);
 }
 
-
+/**
+ * @brief Allows a user registration.
+ *
+ * @param string $hash
+ * @return array|boolean
+ */
 function user_allow($hash) {
 
-	$a = get_app();
-
 	$ret = array('success' => false);
 
 	$register = q("SELECT * FROM `register` WHERE `hash` = '%s' LIMIT 1",
@@ -363,7 +365,7 @@ function user_allow($hash) {
 	$account = q("SELECT * FROM account WHERE account_id = %d LIMIT 1",
 		intval($register[0]['uid'])
 	);
-	
+
 	if(! $account)
 		return $ret;
 
@@ -381,7 +383,7 @@ function user_allow($hash) {
 		intval(ACCOUNT_PENDING),
 		intval($register[0]['uid'])
 	);
-	
+
 	push_lang($register[0]['language']);
 
 	$email_tpl = get_intltext_template("register_open_eml.tpl");
@@ -402,18 +404,23 @@ function user_allow($hash) {
 
 	pop_lang();
 
-	if($res) {
+	if ($res) {
 		info( t('Account approved.') . EOL );
 		return true;
-	}	
-
+	}
 }
 
 
-// This does not have to go through user_remove() and save the nickname
-// permanently against re-registration, as the person was not yet
-// allowed to have friends on this system
-
+/**
+ * @brief Denies a user registration.
+ *
+ * This does not have to go through user_remove() and save the nickname
+ * permanently against re-registration, as the person was not yet
+ * allowed to have friends on this system
+ *
+ * @param string $hash
+ * @return boolean
+ */
 function user_deny($hash) {
 
 	$register = q("SELECT * FROM register WHERE hash = '%s' LIMIT 1",
@@ -426,7 +433,7 @@ function user_deny($hash) {
 	$account = q("SELECT account_id, account_email FROM account WHERE account_id = %d LIMIT 1",
 		intval($register[0]['uid'])
 	);
-	
+
 	if(! $account)
 		return false;
 
@@ -438,15 +445,14 @@ function user_deny($hash) {
 		dbesc($register[0]['id'])
 	);
 	notice( sprintf(t('Registration revoked for %s'), $account[0]['account_email']) . EOL);
+
 	return true;
-	
+
 }
 
 
 function user_approve($hash) {
 
-	$a = get_app();
-
 	$ret = array('success' => false);
 
 	$register = q("SELECT * FROM `register` WHERE `hash` = '%s' and password = 'verify' LIMIT 1",
@@ -459,7 +465,7 @@ function user_approve($hash) {
 	$account = q("SELECT * FROM account WHERE account_id = %d LIMIT 1",
 		intval($register[0]['uid'])
 	);
-	
+
 	if(! $account)
 		return $ret;
 
@@ -482,21 +488,16 @@ function user_approve($hash) {
 		intval(ACCOUNT_UNVERIFIED),
 		intval($register[0]['uid'])
 	);
-	
+
 	info( t('Account verified. Please login.') . EOL );
 
 	return true;
-
 }
 
 
-
-
-
-
 /**
- * @function downgrade_accounts()
- *    Checks for accounts that have past their expiration date.
+ * @brief Checks for accounts that have past their expiration date.
+ *
  * If the account has a service class which is not the site default, 
  * the service class is reset to the site default and expiration reset to never.
  * If the account has no service class it is expired and subsequently disabled.
@@ -506,8 +507,6 @@ function user_approve($hash) {
  * not the job of this function, but this can be implemented by plugin if desired. 
  * Default behaviour is to stop allowing additional resources to be consumed. 
  */
- 
-
 function downgrade_accounts() {
 
 	$r = q("select * from account where not ( account_flags & %d )>0 
@@ -604,7 +603,7 @@ function service_class_allows($uid, $property, $usage = false) {
  *
  * @param int $aid The account_id to check
  * @param string $property The service class property to check for
- * @param int|boolean $usage, (optional) The value to check against
+ * @param int|boolean $usage (optional) The value to check against
  * @return boolean
  */
 function account_service_class_allows($aid, $property, $usage = false) {
diff --git a/include/attach.php b/include/attach.php
index f9206851e..415859b39 100644
--- a/include/attach.php
+++ b/include/attach.php
@@ -1,10 +1,10 @@
 <?php
-
-/** @file
+/**
+ * @file include/attach.php
  *
  * @brief File/attach API with the potential for revision control.
  *
- * TODO: a filesystem storage abstraction which maintains security (and 'data' contains a system filename
+ * @TODO: a filesystem storage abstraction which maintains security (and 'data' contains a system filename
  * which is inaccessible from the web). This could get around PHP storage limits and store videos and larger
  * items, using fread or OS methods or native code to read/write or chunk it through.
  * Also an 'append' option to the storage function might be a useful addition. 
@@ -15,10 +15,10 @@ require_once('include/security.php');
 
 /**
  * @brief Guess the mimetype from file ending.
- * 
+ *
  * This function takes a file name and guess the mimetype from the
  * filename extension.
- * 
+ *
  * @param $filename a string filename
  * @return string The mimetype according to a file ending.
  */
@@ -117,23 +117,22 @@ function z_mime_content_type($filename) {
 
 /**
  * @brief Count files/attachments.
- * 
- * 
- * @param $channel_id
- * @param $observer
- * @param $hash (optional)
- * @param $filename (optional)
- * @param $filetype (optional)
- * @return array
- * 	$ret['success'] boolean
- * 	$ret['results'] amount of found results, or false
- * 	$ret['message'] string with error messages if any
+ *
+ * @param int $channel_id
+ * @param string $observer
+ * @param string $hash (optional)
+ * @param string $filename (optional)
+ * @param string $filetype (optional)
+ * @return assoziative array with:
+ *  * \e boolean \b success
+ *  * \e int|boolean \b results amount of found results, or false
+ *  * \e string \b message with error messages if any
  */
 function attach_count_files($channel_id, $observer, $hash = '', $filename = '', $filetype = '') {
 
 	$ret = array('success' => false);
 
-	if(! perm_is_allowed($channel_id,$observer, 'read_storage')) {
+	if(! perm_is_allowed($channel_id, $observer, 'read_storage')) {
 		$ret['message'] = t('Permission denied.');
 		return $ret;
 	}
@@ -219,8 +218,9 @@ function attach_list_files($channel_id, $observer, $hash = '', $filename = '', $
  * 
  * This could exhaust memory so most useful only when immediately sending the data.
  * 
- * @param $hash
- * @param $rev
+ * @param string $hash
+ * @param int $rev Revision
+ * @return array
  */
 function attach_by_hash($hash, $rev = 0) {
 
@@ -234,7 +234,6 @@ function attach_by_hash($hash, $rev = 0) {
 	elseif($rev)
 		$sql_extra = " and revision = " . intval($rev) . " ";
 
-
 	$r = q("SELECT uid FROM attach WHERE hash = '%s' $sql_extra LIMIT 1",
 		dbesc($hash)
 	);
@@ -270,9 +269,9 @@ function attach_by_hash($hash, $rev = 0) {
 
 /**
  * @brief Find an attachment by hash and revision.
- * 
+ *
  * Returns the entire attach structure excluding data.
- * 
+ *
  * @see attach_by_hash()
  * @param $hash
  * @param $rev revision default 0
@@ -561,7 +560,7 @@ function z_readdir($channel_id, $observer_hash, $pathname, $parent_hash = '') {
 	}
 	else
 		$paths = array($pathname);
-	
+
 	$r = q("select id, aid, uid, hash, creator, filename, filetype, filesize, revision, folder, flags, created, edited, allow_cid, allow_gid, deny_cid, deny_gid from attach where id = %d and folder = '%s' and filename = '%s' and (flags & %d )>0 " . permissions_sql($channel_id),
 		intval($channel_id),
 		dbesc($parent_hash),
@@ -579,24 +578,22 @@ function z_readdir($channel_id, $observer_hash, $pathname, $parent_hash = '') {
 }
 
 /**
- * @function attach_mkdir($channel,$observer_hash,$arr);
- *
  * @brief Create directory.
  *
  * @param array $channel channel array of owner
  * @param string $observer_hash hash of current observer
  * @param array $arr parameter array to fulfil request
- * Required:
- *    $arr['filename']
- *    $arr['folder'] // hash of parent directory, empty string for root directory
- * Optional:
- *    $arr['hash']  // precumputed hash for this node
- *    $arr['allow_cid']
- *    $arr['allow_gid']
- *    $arr['deny_cid']
- *    $arr['deny_gid']
+ * - Required:
+ *  * \e string \b filename
+ *  * \e string \b folder hash of parent directory, empty string for root directory
+ * - Optional:
+ *  * \e string \b hash precumputed hash for this node
+ *  * \e tring  \b allow_cid
+ *  * \e string \b allow_gid
+ *  * \e string \b deny_cid
+ *  * \e string \b deny_gid
+ * @return array
  */
-
 function attach_mkdir($channel, $observer_hash, $arr = null) {
 
 	$ret = array('success' => false);
@@ -720,13 +717,13 @@ function attach_mkdir($channel, $observer_hash, $arr = null) {
 /**
  * @brief Changes permissions of a file.
  * 
- * @param $channel_id
- * @param $resource
- * @param $allow_cid
- * @param $allow_gid
- * @param $deny_cid
- * @param $deny_gid
- * @param $recurse
+ * @param int $channel_id
+ * @param array $resource
+ * @param string $allow_cid
+ * @param string $allow_gid
+ * @param string $deny_cid
+ * @param string $deny_gid
+ * @param boolean $recurse (optional) default false
  */
 function attach_change_permissions($channel_id, $resource, $allow_cid, $allow_gid, $deny_cid, $deny_gid, $recurse = false) {
 
@@ -836,7 +833,6 @@ function attach_delete($channel_id, $resource) {
 	);
 
 	file_activity($channel_id, $object, $object['allow_cid'], $object['allow_gid'], $object['deny_cid'], $object['deny_gid'], 'update', $no_activity=false);
-
 }
 
 /**
@@ -844,8 +840,8 @@ function attach_delete($channel_id, $resource) {
  *
  * @warning This function cannot be used with mod/dav as it always returns a
  * path valid under mod/cloud.
- * 
- * @param array assoziative array with:
+ *
+ * @param array $arr assoziative array with:
  *  * \e int \b uid the channel's uid
  *  * \e string \b folder
  *  * \e string \b filename
@@ -973,20 +969,21 @@ function pipe_streams($in, $out) {
 	$size = 0;
 	while (!feof($in))
 		$size += fwrite($out, fread($in, 8192));
+
 	return $size;
 }
 
 /**
- * @brief Activity for files
+ * @brief Activity for files.
  *
- * @param $channel_id
- * @param $object
- * @param $allow_cid
- * @param $allow_gid
- * @param $deny_cid
- * @param $deny_gid
- * @param $verb
- * @param $no_activity
+ * @param int $channel_id
+ * @param array $object
+ * @param string $allow_cid
+ * @param string $allow_gid
+ * @param string $deny_cid
+ * @param string $deny_gid
+ * @param string $verb
+ * @param boolean $no_activity
  */
 function file_activity($channel_id, $object, $allow_cid, $allow_gid, $deny_cid, $deny_gid, $verb, $no_activity) {
 
@@ -1028,7 +1025,6 @@ function file_activity($channel_id, $object, $allow_cid, $allow_gid, $deny_cid,
 
 		//filter out receivers which do not have permission to view filestorage
 		$arr_allow_cid = check_list_permissions($channel_id, $arr_allow_cid, 'view_storage');
-
 	}
 
 	$mid = item_message_id();
@@ -1109,7 +1105,6 @@ function file_activity($channel_id, $object, $allow_cid, $allow_gid, $deny_cid,
 		$update = false;
 
 		//notice( t('File activity updated') . EOL);
-
 	}
 
 	if($no_activity) {
@@ -1152,15 +1147,14 @@ function file_activity($channel_id, $object, $allow_cid, $allow_gid, $deny_cid,
 	//(($verb === 'post') ?  notice( t('File activity posted') . EOL) : notice( t('File activity dropped') . EOL));
 
 	return;
-
 }
 
 /**
  * @brief Create file activity object
  *
- * @param $channel_id
- * @param $hash
- * @param $cloudpath
+ * @param int $channel_id
+ * @param string $hash
+ * @param string $cloudpath
  */
 function get_file_activity_object($channel_id, $hash, $cloudpath) {
 
@@ -1199,8 +1193,8 @@ function get_file_activity_object($channel_id, $hash, $cloudpath) {
 		'deny_cid'	=> $x[0]['deny_cid'],
 		'deny_gid'	=> $x[0]['deny_gid']
 	);
-	return $object;
 
+	return $object;
 }
 
 /**
diff --git a/include/comanche.php b/include/comanche.php
index 71ffe99b8..62bfd0ddc 100644
--- a/include/comanche.php
+++ b/include/comanche.php
@@ -101,7 +101,7 @@ function comanche_parser(&$a, $s, $pass = 0) {
 }
 
 
-function comanche_menu($name,$class = '') {
+function comanche_menu($name, $class = '') {
 	$channel_id = comanche_get_channel_id();
 	if($channel_id) {
 		$m = menu_fetch($name,$channel_id, get_observer_hash());
@@ -111,20 +111,23 @@ function comanche_menu($name,$class = '') {
 
 function comanche_replace_region($match) {
 	$a = get_app();
-	if(array_key_exists($match[1], $a->page)) {
+	if (array_key_exists($match[1], $a->page)) {
 		return $a->page[$match[1]];
 	}
 }
 
 /**
- * @function comanche_get_channel_id()
- *    Returns the channel_id of the profile owner of the page, or the local_channel if there is no profile owner.
- * Otherwise returns 0
- */ 
-
+ * @brief Returns the channel_id of the profile owner of the page.
+ *
+ * Returns the channel_id of the profile owner of the page, or the local_channel
+ * if there is no profile owner. Otherwise returns 0.
+ *
+ * @return channel_id
+ */
 function comanche_get_channel_id() {
 	$channel_id = ((is_array(get_app()->profile)) ? get_app()->profile['profile_uid'] : 0);
-	if((! $channel_id) && (local_channel()))
+
+	if ((! $channel_id) && (local_channel()))
 		$channel_id = local_channel();
 
 	return $channel_id;
@@ -173,23 +176,26 @@ function comanche_webpage(&$a,$s) {
 }
 
 
-// Widgets will have to get any operational arguments from the session,
-// the global app environment, or config storage until we implement argument passing
-
-
+/**
+ * Widgets will have to get any operational arguments from the session, the
+ * global app environment, or config storage until we implement argument passing
+ *
+ * @param string $name
+ * @param string $text
+ */
 function comanche_widget($name, $text) {
 	$vars = array();
 	$matches = array();
 
 	$cnt = preg_match_all("/\[var=(.*?)\](.*?)\[\/var\]/ism", $text, $matches, PREG_SET_ORDER);
-	if($cnt) {
-		foreach($matches as $mtch) {
+	if ($cnt) {
+		foreach ($matches as $mtch) {
 			$vars[$mtch[1]] = $mtch[2];
 		}
 	}
 
 	$func = 'widget_' . trim($name);
-	if(function_exists($func))
+	if (function_exists($func))
 		return $func($vars);
 }
 
diff --git a/include/config.php b/include/config.php
index b459e2c7d..c94d25eb8 100644
--- a/include/config.php
+++ b/include/config.php
@@ -3,8 +3,7 @@
  * @file include/config.php
  * @brief Arbitrary configuration storage.
  *
- * Note:
- * Please do not store booleans - convert to 0/1 integer values
+ * @note Please do not store booleans - convert to 0/1 integer values.
  * The get_?config() functions return boolean false for keys that are unset,
  * and this could lead to subtle bugs.
  *
@@ -18,19 +17,20 @@
  * - <b>pconfig</b> is used for channel specific configurations and takes a
  * <i>channel_id</i> as identifier. It stores for example which features are
  * enabled per channel. The storage is of size MEDIUMTEXT.
- * @code $var = get_pconfig(local_channel(), 'category', 'key');@endcode
+ * @code{.php} $var = get_pconfig(local_channel(), 'category', 'key');@endcode
  * - <b>xconfig</b> is the same as pconfig, except that it uses <i>xchan</i> as
  * an identifier. This is for example for people who do not have a local account.
  * The storage is of size MEDIUMTEXT.
- * @code $observer = $a->get_observer_hash();
+ * @code{.php}
+ * $observer = $a->get_observer_hash();
  * if ($observer) {
  *     $var = get_xconfig($observer, 'category', 'key');
  * }@endcode
  *
  * - get_config() and set_config() can also be done through the command line tool
- * @ref util/config
+ * @ref util/config.md "util/config"
  * - get_pconfig() and set_pconfig() can also be done through the command line tool
- * @ref util/pconfig and takes a channel_id as first argument. 
+ * @ref util/pconfig.md "util/pconfig" and takes a channel_id as first argument. 
  *
  */
 
@@ -123,7 +123,7 @@ function get_config_from_storage($family, $key) {
  *
  * Stores a config value ($value) in the category ($family) under the key ($key).
  *
- * Please do not store booleans - convert to 0/1 integer values!
+ * @note Please do not store booleans - convert to 0/1 integer values!
  *
  * @param string $family
  *  The category of the configuration value
@@ -272,14 +272,16 @@ function get_pconfig($uid, $family, $key, $instore = false) {
  * Stores a config value ($value) in the category ($family) under the key ($key)
  * for the channel_id $uid.
  *
- * Please do not store booleans - convert to 0/1 integer values!
+ * @note Please do not store booleans - convert to 0/1 integer values!
  *
  * @param string $uid
  *  The channel_id
  * @param string $family
  *  The category of the configuration value
  * @param string $key
- *  The configuration key to query
+ *  The configuration key to set
+ * @param string $value
+ *  The value to store
  * @return mixed Stored $value or false
  */
 function set_pconfig($uid, $family, $key, $value) {
@@ -315,6 +317,7 @@ function set_pconfig($uid, $family, $key, $value) {
 		);
 		if($ret)
 			return $value;
+
 		return $ret;
 	}
 
@@ -339,6 +342,7 @@ function set_pconfig($uid, $family, $key, $value) {
 
 	if($ret)
 		return $value;
+
 	return $ret;
 }
 
@@ -360,13 +364,14 @@ function del_pconfig($uid, $family, $key) {
 	global $a;
 	$ret = false;
 
-	if(x($a->config[$uid][$family], $key))
+	if (x($a->config[$uid][$family], $key))
 		unset($a->config[$uid][$family][$key]);
 		$ret = q("DELETE FROM pconfig WHERE uid = %d AND cat = '%s' AND k = '%s'",
 		intval($uid),
 		dbesc($family),
 		dbesc($key)
 	);
+
 	return $ret;
 }
 
@@ -448,7 +453,7 @@ function get_xconfig($xchan, $family, $key) {
  * Stores a config value ($value) in the category ($family) under the key ($key)
  * for the observer's $xchan hash.
  *
- * Please do not store booleans - convert to 0/1 integer values!
+ * @note Please do not store booleans - convert to 0/1 integer values!
  *
  * @param string $xchan
  *  The observer's hash
@@ -456,6 +461,8 @@ function get_xconfig($xchan, $family, $key) {
  *  The category of the configuration value
  * @param string $key
  *  The configuration key to set
+ * @param string $value
+ *  The value to store
  * @return mixed Stored $value or false
  */
 function set_xconfig($xchan, $family, $key, $value) {
diff --git a/include/conversation.php b/include/conversation.php
index 4018ced28..042d01b3e 100644
--- a/include/conversation.php
+++ b/include/conversation.php
@@ -1044,7 +1044,6 @@ function builtin_activity_puller($item, &$conv_responses) {
 			return;
 		}
 	}
-
 }
 
 
@@ -1053,7 +1052,7 @@ function builtin_activity_puller($item, &$conv_responses) {
  *
  * @param int $cnt number of people who like/dislike the item
  * @param array $arr array of pre-linked names of likers/dislikers
- * @param string $typ eone of 'like, 'dislike'
+ * @param string $type one of 'like, 'dislike'
  * @param int $id item id
  * @return string formatted text
  */
@@ -1146,7 +1145,6 @@ function status_editor($a, $x, $popup = false) {
 		'$expireswhen' => t('Expires YYYY-MM-DD HH:MM')
 	));
 
-
 	$tpl = get_markup_template('jot.tpl');
 
 	$jotplugins = '';
@@ -1461,8 +1459,8 @@ function network_tabs() {
 
 	if ($no_active=='active' && x($_GET,'order')) {
 		switch($_GET['order']){
-		 case 'post': $postord_active = 'active'; $no_active=''; break;
-		 case 'comment' : $all_active = 'active'; $no_active=''; break;
+			case 'post': $postord_active = 'active'; $no_active=''; break;
+			case 'comment' : $all_active = 'active'; $no_active=''; break;
 		}
 	}
 
diff --git a/include/datetime.php b/include/datetime.php
index 5cab5889d..b0167edb2 100644
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -1,54 +1,71 @@
-<?php /** @file */
-
-// two-level sort for timezones.
+<?php
+/**
+ * @file include/datetime.php
+ * @brief Some functions for date and time related tasks.
+ */
 
 
+/**
+ * @brief Two-level sort for timezones.
+ *
+ * @param string $a
+ * @param string $b
+ * @return number
+ */
 function timezone_cmp($a, $b) {
 	if(strstr($a,'/') && strstr($b,'/')) {
 		if ( t($a) == t($b)) return 0;
 		return ( t($a) < t($b)) ? -1 : 1;
 	}
-	if(strstr($a,'/')) return -1;
-	if(strstr($b,'/')) return  1;
+	if (strstr($a,'/')) return -1;
+	if (strstr($b,'/')) return  1;
 	if ( t($a) == t($b)) return 0;
+
 	return ( t($a) < t($b)) ? -1 : 1;
 }
 
-// Return timezones grouped (primarily) by continent
+/**
+ * @brief Return timezones grouped (primarily) by continent.
+ *
+ * @return array
+ */
 function get_timezones( ){
 	$timezone_identifiers = DateTimeZone::listIdentifiers();
 
 	usort($timezone_identifiers, 'timezone_cmp');
 	$continent = '';
 	$continents = array();
-	foreach($timezone_identifiers as $value) {
+	foreach ($timezone_identifiers as $value) {
 		$ex = explode("/", $value);
-		if(count($ex) > 1) {
+		if (count($ex) > 1) {
 			$continent = t($ex[0]);
-			if(count($ex) > 2)
-				$city = substr($value,strpos($value,'/')+1);
+			if (count($ex) > 2)
+				$city = substr($value, strpos($value, '/')+1);
 			else
 				$city = $ex[1];
-		}
-		else {
+		} else {
 			$city = $ex[0];
 			$continent = t('Miscellaneous');
 		}
 		$city = str_replace('_', ' ',  t($city));
 
-		if(!x($continents,$ex[0])) $continents[$ex[0]] = array();
+		if (!x($continents, $ex[0])) $continents[$ex[0]] = array();
 		$continents[$continent][$value] = $city;
 	}
+
 	return $continents;
 }
 
-// General purpose date parse/convert function.
-// $from = source timezone
-// $to   = dest timezone
-// $s    = some parseable date/time string
-// $fmt  = output format
-
-
+/**
+ * @brief General purpose date parse/convert function.
+ *
+ * @param string $from source timezone
+ * @param string $to dest timezone
+ * @param string $s some parseable date/time string
+ * @param string $fmt output format recognised from php's DateTime class
+ *   http://www.php.net/manual/en/datetime.format.php
+ * @return string
+ */
 function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d H:i:s") {
 
 	// Defaults to UTC if nothing is set, but throws an exception if set to empty string.
@@ -68,44 +85,46 @@ function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d
 
 	if(substr($s,0,10) == '0000-00-00') {
 		$d = new DateTime($s . ' + 32 days', new DateTimeZone('UTC'));
-		return str_replace('1','0',$d->format($fmt));
+		return str_replace('1', '0', $d->format($fmt));
 	}
 
 	try {
 		$from_obj = new DateTimeZone($from);
-	}
-	catch(Exception $e) {
+	} catch(Exception $e) {
 		$from_obj = new DateTimeZone('UTC');
 	}
 
 	try {
 		$d = new DateTime($s, $from_obj);
-	}
-	catch(Exception $e) {
+	} catch(Exception $e) {
 		logger('datetime_convert: exception: ' . $e->getMessage());
 		$d = new DateTime('now', $from_obj);
 	}
 
 	try {
 		$to_obj = new DateTimeZone($to);
-	}
-	catch(Exception $e) {
+	} catch(Exception $e) {
 		$to_obj = new DateTimeZone('UTC');
 	}
 
 	$d->setTimeZone($to_obj);
+
 	return($d->format($fmt));
 }
 
-// wrapper for date selector, tailored for use in birthday fields
-
+/**
+ * @brief Wrapper for date selector, tailored for use in birthday fields.
+ *
+ * @param string $dob Date of Birth
+ * @return string
+ */
 function dob($dob) {
-	list($year,$month,$day) = sscanf($dob,'%4d-%2d-%2d');
-	$f = get_config('system','birthday_input_format');
-	if(! $f)
+	list($year, $month, $day) = sscanf($dob, '%4d-%2d-%2d');
+	$f = get_config('system', 'birthday_input_format');
+	if (! $f)
 		$f = 'ymd';
 
-	if($dob === '0000-00-00')
+	if ($dob === '0000-00-00')
 		$value = '';
 	else
 		$value = (($year) ? datetime_convert('UTC','UTC',$dob,'Y-m-d') : datetime_convert('UTC','UTC',$dob,'m-d'));
@@ -120,7 +139,6 @@ function dob($dob) {
 	return $o;
 }
 
-
 /**
  * returns a date selector
  * @param $format
@@ -135,7 +153,7 @@ function dob($dob) {
  *  id and name of datetimepicker (defaults to "datetimepicker")
  */
 function datesel($format, $min, $max, $default, $id = 'datepicker') {
-	return datetimesel($format,$min,$max,$default,$id,true,false, '','');
+	return datetimesel($format, $min, $max, $default, $id,true, false, '', '');
 }
 
 /**
@@ -154,7 +172,8 @@ function timesel($format, $h, $m, $id='timepicker') {
 }
 
 /**
- * returns a datetime selector
+ * @brief Returns a datetime selector.
+ *
  * @param $format
  *  format string, e.g. 'ymd' or 'mdy'. Not currently supported
  * @param $min
@@ -163,23 +182,25 @@ function timesel($format, $h, $m, $id='timepicker') {
  *  unix timestap of maximum date
  * @param $default
  *  unix timestamp of default date
- * @param $id
+ * @param string $id
  *  id and name of datetimepicker (defaults to "datetimepicker")
- * @param $pickdate
+ * @param boolean $pickdate
  *  true to show date picker (default)
- * @param $picktime
+ * @param boolean $picktime
  *  true to show time picker (default)
  * @param $minfrom
  *  set minimum date from picker with id $minfrom (none by default)
  * @param $maxfrom
  *  set maximum date from picker with id $maxfrom (none by default)
+ * @param boolean $required default false
+ * @return string Parsed HTML output.
+ * 
+ * @todo Once browser support is better this could probably be replaced with
+ * native HTML5 date picker.
  */
-function datetimesel($format, $min, $max, $default, $id = 'datetimepicker', $pickdate = true, $picktime = true, $minfrom = '', $maxfrom = '',$required = false) {
+function datetimesel($format, $min, $max, $default, $id = 'datetimepicker', $pickdate = true, $picktime = true, $minfrom = '', $maxfrom = '', $required = false) {
 
-
-	// Once browser support is better this could probably be replaced with native HTML5 date picker
 	$o = '';
-
 	$dateformat = '';
 
 	if($pickdate) $dateformat .= 'Y-m-d';
@@ -188,7 +209,7 @@ function datetimesel($format, $min, $max, $default, $id = 'datetimepicker', $pic
 
 	$minjs = $min ? ",minDate: new Date({$min->getTimestamp()}*1000), yearStart: " . $min->format('Y') : '';
 	$maxjs = $max ? ",maxDate: new Date({$max->getTimestamp()}*1000), yearEnd: " . $max->format('Y') : '';
-	
+
 	$input_text = $default ? 'value="' . date($dateformat, $default->getTimestamp()) . '"' : '';
 	$defaultdatejs = $default ? ",defaultDate: new Date({$default->getTimestamp()}*1000)" : '';
 
@@ -214,31 +235,39 @@ function datetimesel($format, $min, $max, $default, $id = 'datetimepicker', $pic
 	$o .= (($required) ? '<span class="required" title="' . t('Required') . '" >*</span>' : '');
 	$o .= '</div>';
 	$o .= "<script type='text/javascript'>\$(function () {var picker = \$('#$id').datetimepicker({step:5,format:'$dateformat' $minjs $maxjs $pickers $defaultdatejs}); $extra_js})</script>";
+
 	return $o;
 }
 
-// implements "3 seconds ago" etc.
-// based on $posted_date, (UTC).
-// Results relative to current timezone
-// Limited to range of timestamps
-
-
-function relative_date($posted_date,$format = null) {
+/**
+ * @brief Returns a relative date string.
+ *
+ * Implements "3 seconds ago" etc.
+ * Based on $posted_date, (UTC).
+ * Results relative to current timezone.
+ * Limited to range of timestamps.
+ *
+ * @param string $posted_date
+ * @param string $format (optional) parsed with sprintf()
+ *    <tt>%1$d %2$s ago</tt>, e.g. 22 hours ago, 1 minute ago
+ * @return string with relative date
+ */
+function relative_date($posted_date, $format = null) {
 
-	$localtime = datetime_convert('UTC',date_default_timezone_get(),$posted_date); 
+	$localtime = datetime_convert('UTC', date_default_timezone_get(), $posted_date); 
 
 	$abs = strtotime($localtime);
-    
-    if (is_null($posted_date) || $posted_date === NULL_DATE || $abs === False) {
-		 return t('never');
+
+	if (is_null($posted_date) || $posted_date === NULL_DATE || $abs === false) {
+		return t('never');
 	}
 
 	$etime = time() - $abs;
-    
+
 	if ($etime < 1) {
 		return t('less than a second ago');
 	}
-    
+
 	$a = array( 12 * 30 * 24 * 60 * 60  =>  array( t('year'),   t('years')),
 				30 * 24 * 60 * 60       =>  array( t('month'),  t('months')),
 				7  * 24 * 60 * 60       =>  array( t('week'),   t('weeks')),
@@ -247,231 +276,256 @@ function relative_date($posted_date,$format = null) {
 				60                      =>  array( t('minute'), t('minutes')),
 				1                       =>  array( t('second'), t('seconds'))
 	);
-    
+
 	foreach ($a as $secs => $str) {
 		$d = $etime / $secs;
 		if ($d >= 1) {
 			$r = round($d);
-			// translators - e.g. 22 hours ago, 1 minute ago
-			if(! $format)
-				$format = t('%1$d %2$s ago');
-			return sprintf( $format,$r, (($r == 1) ? $str[0] : $str[1]));
-        }
-    }
-}
-
+			if (! $format)
+				$format = t('%1$d %2$s ago', 'e.g. 22 hours ago, 1 minute ago');
 
+			return sprintf($format, $r, (($r == 1) ? $str[0] : $str[1]));
+		}
+	}
+}
 
-// Returns age in years, given a date of birth,
-// the timezone of the person whose date of birth is provided,
-// and the timezone of the person viewing the result.
-// Why? Bear with me. Let's say I live in Mittagong, Australia, and my 
-// birthday is on New Year's. You live in San Bruno, California.
-// When exactly are you going to see my age increase?
-// A: 5:00 AM Dec 31 San Bruno time. That's precisely when I start 
-// celebrating and become a year older. If you wish me happy birthday 
-// on January 1 (San Bruno time), you'll be a day late. 
-   
-function age($dob,$owner_tz = '',$viewer_tz = '') {
-	if(! intval($dob))
+/**
+ * @brief Returns timezone correct age in years.
+ *
+ * Returns the age in years, given a date of birth, the timezone of the person
+ * whose date of birth is provided, and the timezone of the person viewing the
+ * result.
+ *
+ * Why? Bear with me. Let's say I live in Mittagong, Australia, and my birthday
+ * is on New Year's. You live in San Bruno, California.
+ * When exactly are you going to see my age increase?
+ *
+ * A: 5:00 AM Dec 31 San Bruno time. That's precisely when I start celebrating
+ * and become a year older. If you wish me happy birthday on January 1
+ * (San Bruno time), you'll be a day late.
+ *
+ * @param string $dob Date of Birth
+ * @param string $owner_tz (optional) timezone of the person of interest
+ * @param string $viewer_tz (optional) timezone of the person viewing
+ * @return number
+ */
+function age($dob, $owner_tz = '', $viewer_tz = '') {
+	if (! intval($dob))
 		return 0;
-	if(! $owner_tz)
+	if (! $owner_tz)
 		$owner_tz = date_default_timezone_get();
-	if(! $viewer_tz)
+	if (! $viewer_tz)
 		$viewer_tz = date_default_timezone_get();
 
-	$birthdate = datetime_convert('UTC',$owner_tz,$dob . ' 00:00:00+00:00','Y-m-d');
-	list($year,$month,$day) = explode("-",$birthdate);
-	$year_diff  = datetime_convert('UTC',$viewer_tz,'now','Y') - $year;
-	$curr_month = datetime_convert('UTC',$viewer_tz,'now','m');
-	$curr_day   = datetime_convert('UTC',$viewer_tz,'now','d');
+	$birthdate = datetime_convert('UTC', $owner_tz, $dob . ' 00:00:00+00:00','Y-m-d');
+	list($year,$month,$day) = explode("-", $birthdate);
+	$year_diff  = datetime_convert('UTC', $viewer_tz, 'now', 'Y') - $year;
+	$curr_month = datetime_convert('UTC', $viewer_tz, 'now', 'm');
+	$curr_day   = datetime_convert('UTC', $viewer_tz, 'now', 'd');
 
-	if(($curr_month < $month) || (($curr_month == $month) && ($curr_day < $day)))
+	if (($curr_month < $month) || (($curr_month == $month) && ($curr_day < $day)))
 		$year_diff--;
+
 	return $year_diff;
 }
 
+/**
+ * @brief Get days of a month in a given year.
+ *
+ * Returns number of days in the month of the given year.
+ * $m = 1 is 'January' to match human usage.
+ *
+ * @param int $y year
+ * @param int $m month (1=January, 12=December)
+ * @return int number of days in the given month
+ */
+function get_dim($y, $m) {
+	$dim = array( 0,
+			31, 28, 31, 30, 31, 30,
+			31, 31, 30, 31, 30, 31
+	);
 
+	if ($m != 2)
+		return $dim[$m];
 
-// Get days in month
-// get_dim($year, $month);
-// returns number of days.
-// $month[1] = 'January'; 
-//   to match human usage.
-
-
-function get_dim($y,$m) {
+	if (((($y % 4) == 0) && (($y % 100) != 0)) || (($y % 400) == 0))
+		return 29;
 
-  $dim = array( 0,
-    31, 28, 31, 30, 31, 30,
-    31, 31, 30, 31, 30, 31);
- 
-  if($m != 2)
-    return $dim[$m];
-  if(((($y % 4) == 0) && (($y % 100) != 0)) || (($y % 400) == 0))
-    return 29;
-  return $dim[2];
+	return $dim[2];
 }
 
+/**
+ * @brief Returns the first day in month for a given month, year.
+ *
+ * Months start at 1.
+ *
+ * @param int $y Year
+ * @param int $m Month (1=January, 12=December)
+ * @return day 0 = Sunday through 6 = Saturday
+ */
+function get_first_dim($y, $m) {
+	$d = sprintf('%04d-%02d-01 00:00', intval($y), intval($m));
 
-// Returns the first day in month for a given month, year
-// get_first_dim($year,$month)
-// returns 0 = Sunday through 6 = Saturday
-// Months start at 1.
-
-
-function get_first_dim($y,$m) {
-  $d = sprintf('%04d-%02d-01 00:00', intval($y), intval($m));
-  return datetime_convert('UTC','UTC',$d,'w');
+	return datetime_convert('UTC', 'UTC', $d, 'w');
 }
 
-// output a calendar for the given month, year.
-// if $links are provided (array), e.g. $links[12] => 'http://mylink' , 
-// date 12 will be linked appropriately. Today's date is also noted by 
-// altering td class.
-// Months count from 1.
-
-
-// TODO: provide (prev,next) links, define class variations for different size calendars
-
-function cal($y = 0,$m = 0, $links = false, $class='') {
-
+/**
+ * @brief Output a calendar for the given month, year.
+ *
+ * If $links are provided (array), e.g. $links[12] => 'http://mylink' ,
+ * date 12 will be linked appropriately. Today's date is also noted by
+ * altering td class.
+ * Months count from 1.
+ *
+ * @param number $y Year
+ * @param number $m Month
+ * @param string $links (default false)
+ * @param string $class
+ * @return string
+ *
+ * @todo provide (prev,next) links, define class variations for different size calendars
+ */
+function cal($y = 0, $m = 0, $links = false, $class='') {
 
 	// month table - start at 1 to match human usage.
 
 	$mtab = array(' ',
-	  'January','February','March',
-	  'April','May','June',
-	  'July','August','September',
-	  'October','November','December'
-	); 
+		'January','February','March',
+		'April','May','June',
+		'July','August','September',
+		'October','November','December'
+	);
 
 	$thisyear = datetime_convert('UTC',date_default_timezone_get(),'now','Y');
 	$thismonth = datetime_convert('UTC',date_default_timezone_get(),'now','m');
-	if(! $y)
+	if (! $y)
 		$y = $thisyear;
-	if(! $m)
+	if (! $m)
 		$m = intval($thismonth);
 
-  $dn = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
-  $f = get_first_dim($y,$m);
-  $l = get_dim($y,$m);
-  $d = 1;
-  $dow = 0;
-  $started = false;
+	$dn = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
+	$f = get_first_dim($y, $m);
+	$l = get_dim($y, $m);
+	$d = 1;
+	$dow = 0;
+	$started = false;
 
-  if(($y == $thisyear) && ($m == $thismonth))
-    $tddate = intval(datetime_convert('UTC',date_default_timezone_get(),'now','j'));
+	if (($y == $thisyear) && ($m == $thismonth))
+		$tddate = intval(datetime_convert('UTC',date_default_timezone_get(),'now','j'));
 
 	$str_month = day_translate($mtab[$m]);
-  $o = '<table class="calendar' . $class . '">';
-  $o .= "<caption>$str_month $y</caption><tr>";
-  for($a = 0; $a < 7; $a ++)
-     $o .= '<th>' . mb_substr(day_translate($dn[$a]),0,3,'UTF-8') . '</th>';
-  $o .= '</tr><tr>';
-
-  while($d <= $l) {
-    if(($dow == $f) && (! $started))
-      $started = true;
-    $today = (((isset($tddate)) && ($tddate == $d)) ? "class=\"today\" " : '');
-    $o .= "<td $today>";
-	$day = str_replace(' ','&nbsp;',sprintf('%2.2d', $d));
-    if($started) {
-      if(is_array($links) && isset($links[$d]))
-        $o .=  "<a href=\"{$links[$d]}\">$day</a>";
-      else
-        $o .= $day;
-      $d ++;
-    }
-    else
-      $o .= '&nbsp;';
-    $o .= '</td>';
-    $dow ++;
-    if(($dow == 7) && ($d <= $l)) {
-      $dow = 0;
-      $o .= '</tr><tr>';
-    }
-  }
-  if($dow)
-    for($a = $dow; $a < 7; $a ++)
-       $o .= '<td>&nbsp;</td>';
-  $o .= '</tr></table>'."\r\n";  
-  
-  return $o;
-}
+	$o = '<table class="calendar' . $class . '">';
+	$o .= "<caption>$str_month $y</caption><tr>";
+	for ($a = 0; $a < 7; $a ++)
+		$o .= '<th>' . mb_substr(day_translate($dn[$a]),0,3,'UTF-8') . '</th>';
+
+	$o .= '</tr><tr>';
+
+	while ($d <= $l) {
+		if (($dow == $f) && (! $started))
+			$started = true;
+
+		$today = (((isset($tddate)) && ($tddate == $d)) ? "class=\"today\" " : '');
+		$o .= "<td $today>";
+		$day = str_replace(' ','&nbsp;',sprintf('%2.2d', $d));
+		if ($started) {
+			if (is_array($links) && isset($links[$d]))
+				$o .=  "<a href=\"{$links[$d]}\">$day</a>";
+			else
+				$o .= $day;
+
+			$d ++;
+		} else {
+			$o .= '&nbsp;';
+		}
+
+		$o .= '</td>';
+		$dow ++;
+		if (($dow == 7) && ($d <= $l)) {
+			$dow = 0;
+			$o .= '</tr><tr>';
+		}
+	}
+	if ($dow)
+		for ($a = $dow; $a < 7; $a ++)
+			$o .= '<td>&nbsp;</td>';
+
+	$o .= '</tr></table>'."\r\n";
 
+	return $o;
+}
 
 /**
- * Return the next birthday, converted from the owner's timezone to UTC. 
+ * @brief Return the next birthday, converted from the owner's timezone to UTC.
+ * 
  * This makes it globally portable.
  * If the provided birthday lacks a month and or day, return an empty string.
  * A missing year is acceptable.
+ *
+ * @param string $dob Date of Birth
+ * @param string $tz Timezone
+ * @param string $format
+ * @return string
  */
+function z_birthday($dob, $tz, $format="Y-m-d H:i:s") {
 
-
-function z_birthday($dob,$tz,$format="Y-m-d H:i:s") {
-
-	if(! strlen($tz))
+	if (! strlen($tz))
 		$tz = 'UTC';
 
 	$birthday = '';
 	$tmp_dob = substr($dob,5);
 	$tmp_d = substr($dob,8);
-	if(intval($tmp_dob) && intval($tmp_d)) {
+	if (intval($tmp_dob) && intval($tmp_d)) {
 		$y = datetime_convert($tz,$tz,'now','Y');
 		$bd = $y . '-' . $tmp_dob . ' 00:00';
 		$t_dob = strtotime($bd);
 		$now = strtotime(datetime_convert($tz,$tz,'now'));
-		if($t_dob < $now)
+		if ($t_dob < $now)
 			$bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
+
 		$birthday = datetime_convert($tz,'UTC',$bd,$format);
 	}
 
 	return $birthday;
-
 }
 
 /**
+ * @brief Create a birthday event for any connections with a birthday in the next 1-2 weeks.
  *
- * Create a birthday event for any connections with a birthday in the next 1-2 weeks.
  * Update the year so that we don't create another event until next year.
- *
  */
-
-
 function update_birthdays() {
 
 	require_once('include/event.php');
 	require_once('include/permissions.php');
 
-    $r = q("SELECT * FROM abook left join xchan on abook_xchan = xchan_hash 
+	$r = q("SELECT * FROM abook left join xchan on abook_xchan = xchan_hash 
 		WHERE abook_dob > %s + interval %s and abook_dob < %s + interval %s",
 		db_utcnow(), db_quoteinterval('7 day'),
 		db_utcnow(), db_quoteinterval('14 day')
-		);
-	if($r) {
-		foreach($r as $rr) {
-			
-			if(! perm_is_allowed($rr['abook_channel'],$rr['xchan_hash'],'send_stream'))
+	);
+	if ($r) {
+		foreach ($r as $rr) {
+			if (! perm_is_allowed($rr['abook_channel'], $rr['xchan_hash'], 'send_stream'))
 				continue;
 
 			$ev = array();
 			$ev['uid'] = $rr['abook_channel'];
 			$ev['account'] = $rr['abook_account'];
 			$ev['event_xchan'] = $rr['xchan_hash'];
-			$ev['start'] = datetime_convert('UTC','UTC', $rr['abook_dob']);
-			$ev['finish'] = datetime_convert('UTC','UTC', $rr['abook_dob'] . ' + 1 day ');
+			$ev['start'] = datetime_convert('UTC', 'UTC', $rr['abook_dob']);
+			$ev['finish'] = datetime_convert('UTC', 'UTC', $rr['abook_dob'] . ' + 1 day ');
 			$ev['adjust'] = 1;
-            $ev['summary'] = sprintf( t('%1$s\'s birthday'), $rr['xchan_name']);
-            $ev['description'] = sprintf( t('Happy Birthday %1$s'), 
+			$ev['summary'] = sprintf( t('%1$s\'s birthday'), $rr['xchan_name']);
+			$ev['description'] = sprintf( t('Happy Birthday %1$s'), 
 				'[zrl=' . $rr['xchan_url'] . ']' . $rr['xchan_name'] . '[/zrl]') ;
 			$ev['type'] = 'birthday';
-			
+
 			$z = event_store_event($ev);
-			if($z) {
-				$item_id = event_store_item($ev,$z);
+			if ($z) {
+				$item_id = event_store_item($ev, $z);
 				q("update abook set abook_dob = '%s' where abook_id = %d",
-					dbesc(intval($rr['abook_dob']) + 1 . substr($rr['abook_dob'],4)),
+					dbesc(intval($rr['abook_dob']) + 1 . substr($rr['abook_dob'], 4)),
 					intval($rr['abook_id'])
 				);
 			}
diff --git a/include/dir_fns.php b/include/dir_fns.php
index 4c6c40f15..d1e26b637 100644
--- a/include/dir_fns.php
+++ b/include/dir_fns.php
@@ -1,14 +1,23 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/dir_fns.php
+ */
 
 require_once('include/permissions.php');
 
+/**
+ * @brief
+ *
+ * @param int $dirmode
+ * @return array
+ */
 function find_upstream_directory($dirmode) {
 	global $DIRECTORY_FALLBACK_SERVERS;
 
 	$preferred = get_config('system','directory_server');
-	if(! $preferred) {
+	if (! $preferred) {
 
-		/**
+		/*
 		 * No directory has yet been set. For most sites, pick one at random
 		 * from our list of directory servers. However, if we're a directory
 		 * server ourself, point at the local instance
@@ -18,41 +27,40 @@ function find_upstream_directory($dirmode) {
 		 */
 
 		$dirmode = intval(get_config('system','directory_mode'));
-		if($dirmode == DIRECTORY_MODE_NORMAL) {
+		if ($dirmode == DIRECTORY_MODE_NORMAL) {
 			$toss = mt_rand(0,count($DIRECTORY_FALLBACK_SERVERS));
 			$preferred = $DIRECTORY_FALLBACK_SERVERS[$toss];
 			set_config('system','directory_server',$preferred);
-		}
-		else{
+		} else{
 			set_config('system','directory_server',z_root());
 		}
 	}
+
 	return array('url' => $preferred);
 }
 
+/**
+ * Directories may come and go over time. We will need to check that our
+ * directory server is still valid occasionally, and reset to something that
+ * is if our directory has gone offline for any reason
+ */
 function check_upstream_directory() {
 
-	/**
-	* Directories may come and go over time.  We will need to check that our 
-	* directory server is still valid occasionally, and reset to something that
-	* is if our directory has gone offline for any reason
-	*/
-
-	$directory = get_config('system','directory_server');
+	$directory = get_config('system', 'directory_server');
 
 	// it's possible there is no directory server configured and the local hub is being used.
 	// If so, default to preserving the absence of a specific server setting.
 
-	$isadir = true; 
+	$isadir = true;
 
-	if($directory) {
+	if ($directory) {
 		$h = parse_url($directory);
-		if($h) {
+		if ($h) {
 			$x = zot_finger('[system]@' . $h['host']);
-			if($x['success']) {
-				$j = json_decode($x['body'],true);
-				if(array_key_exists('site',$j) && array_key_exists('directory_mode',$j['site'])) {
-					if($j['site']['directory_mode'] === 'normal') {
+			if ($x['success']) {
+				$j = json_decode($x['body'], true);
+				if (array_key_exists('site', $j) && array_key_exists('directory_mode', $j['site'])) {
+					if ($j['site']['directory_mode'] === 'normal') {
 						$isadir = false;
 					}
 				}
@@ -60,9 +68,8 @@ function check_upstream_directory() {
 		}
 	}
 
-	if(! $isadir)
-		set_config('system','directory_server','');
-	return;
+	if (! $isadir)
+		set_config('system', 'directory_server', '');
 }
 
 function get_globaldir_setting($observer) {
@@ -95,12 +102,8 @@ function get_safemode_setting($observer) {
 }
 
 /**
- * @function dir_sort_links()
- * Called by the directory_sort widget
+ * @brief Called by the directory_sort widget.
  */
-
-
-	
 function dir_sort_links() {
 
 	$safe_mode = 1;
@@ -110,7 +113,7 @@ function dir_sort_links() {
 	$safe_mode = get_safemode_setting($observer);
 	$globaldir = get_globaldir_setting($observer);
 
- 	// Build urls without order and pubforums so it's easy to tack on the changed value
+	// Build urls without order and pubforums so it's easy to tack on the changed value
 	// Probably there's an easier way to do this
 
 	$current_order = (($_REQUEST['order']) ? $_REQUEST['order'] : 'date');
@@ -145,38 +148,34 @@ function dir_sort_links() {
 		'$pubforums' => array('pubforums', t('Public Forums Only'),(x($_REQUEST,'pubforums') ? $_REQUEST['pubforums'] : ''),'','',' onchange=\'window.location.href="' . $forumsurl . '&pubforums="+(this.checked ? 1 : 0)\''), 
 		'$globaldir' => array('globaldir', t('This Website Only'), 1-intval($globaldir),'','',' onchange=\'window.location.href="' . $forumsurl . '&global="+(this.checked ? 0 : 1)\''),
 	));
+
 	return $o;
 }
 
-
 /**
- * @function sync_directories($mode)
- * 
- * @param int $mode;
+ * @brief Checks the directory mode of this hub.
  *
  * Checks the directory mode of this hub to see if it is some form of directory server. If it is,
  * get the directory realm of this hub. Fetch a list of all other directory servers in this realm and request
  * a directory sync packet. This will contain both directory updates and new ratings. Store these all in the DB. 
  * In the case of updates, we will query each of them asynchronously from a poller task. Ratings are stored 
- * directly if the rater's signature matches.  
+ * directly if the rater's signature matches.
  *
+ * @param int $dirmode;
  */
-
-
 function sync_directories($dirmode) {
 
-	if($dirmode == DIRECTORY_MODE_STANDALONE || $dirmode == DIRECTORY_MODE_NORMAL)
+	if ($dirmode == DIRECTORY_MODE_STANDALONE || $dirmode == DIRECTORY_MODE_NORMAL)
 		return;
 
 	$realm = get_directory_realm();
-	if($realm == DIRECTORY_REALM) {
+	if ($realm == DIRECTORY_REALM) {
 		$r = q("select * from site where (site_flags & %d) > 0 and site_url != '%s' and ( site_realm = '%s' or site_realm = '') ",
 			intval(DIRECTORY_MODE_PRIMARY|DIRECTORY_MODE_SECONDARY),
 			dbesc(z_root()),
 			dbesc($realm)
 		);
-	}
-	else {
+	} else {
 		$r = q("select * from site where (site_flags & %d) > 0 and site_url != '%s' and site_realm like '%s' ",
 			intval(DIRECTORY_MODE_PRIMARY|DIRECTORY_MODE_SECONDARY),
 			dbesc(z_root()),
@@ -185,9 +184,9 @@ function sync_directories($dirmode) {
 	}
 
 	// If there are no directory servers, setup the fallback master
-	// FIXME - what to do if we're in a different realm?
+	/** @FIXME What to do if we're in a different realm? */
 
-	if((! $r) && (z_root() != DIRECTORY_FALLBACK_MASTER)) {
+	if ((! $r) && (z_root() != DIRECTORY_FALLBACK_MASTER)) {
 		$r = array();
 		$r[] = array(
 			'site_url' => DIRECTORY_FALLBACK_MASTER,
@@ -211,32 +210,30 @@ function sync_directories($dirmode) {
 			intval(DIRECTORY_MODE_PRIMARY|DIRECTORY_MODE_SECONDARY),
 			dbesc(z_root())
 		);
-
-	} 
-	if(! $r)
+	}
+	if (! $r)
 		return;
 
-	foreach($r as $rr) {
-		if(! $rr['site_directory'])
+	foreach ($r as $rr) {
+		if (! $rr['site_directory'])
 			continue;
 
 		logger('sync directories: ' . $rr['site_directory']);
 
 		// for brand new directory servers, only load the last couple of days.
 		// It will take about a month for a new directory to obtain the full current repertoire of channels.
-		// FIXME - go back and pick up earlier ratings if this is a new directory server. These do not get refreshed.
+		/** @FIXME Go back and pick up earlier ratings if this is a new directory server. These do not get refreshed. */
 
 		$token = get_config('system','realm_token');
 
-
 		$syncdate = (($rr['site_sync'] === NULL_DATE) ? datetime_convert('UTC','UTC','now - 2 days') : $rr['site_sync']);
 		$x = z_fetch_url($rr['site_directory'] . '?f=&sync=' . urlencode($syncdate) . (($token) ? '&t=' . $token : ''));
 
-		if(! $x['success'])
+		if (! $x['success'])
 			continue;
 
 		$j = json_decode($x['body'],true);
-		if(!($j['transactions']) || ($j['ratings']))
+		if (!($j['transactions']) || ($j['ratings']))
 			continue;
 
 		q("update site set site_sync = '%s' where site_url = '%s'",
@@ -246,17 +243,18 @@ function sync_directories($dirmode) {
 
 		logger('sync_directories: ' . $rr['site_url'] . ': ' . print_r($j,true), LOGGER_DATA);
 
-		if(is_array($j['transactions']) && count($j['transactions'])) {
-			foreach($j['transactions'] as $t) {
+		if (is_array($j['transactions']) && count($j['transactions'])) {
+			foreach ($j['transactions'] as $t) {
 				$r = q("select * from updates where ud_guid = '%s' limit 1",
 					dbesc($t['transaction_id'])
 				);
 				if($r)
 					continue;
+
 				$ud_flags = 0;
-				if(is_array($t['flags']) && in_array('deleted',$t['flags']))
+				if (is_array($t['flags']) && in_array('deleted',$t['flags']))
 					$ud_flags |= UPDATE_FLAGS_DELETED;
-				if(is_array($t['flags']) && in_array('forced',$t['flags']))
+				if (is_array($t['flags']) && in_array('forced',$t['flags']))
 					$ud_flags |= UPDATE_FLAGS_FORCED;
 
 				$z = q("insert into updates ( ud_hash, ud_guid, ud_date, ud_flags, ud_addr )
@@ -269,42 +267,41 @@ function sync_directories($dirmode) {
 				);
 			}
 		}
-		if(is_array($j['ratings']) && count($j['ratings'])) {
-			foreach($j['ratings'] as $rr) {		
+		if (is_array($j['ratings']) && count($j['ratings'])) {
+			foreach ($j['ratings'] as $rr) {
 				$x = q("select * from xlink where xlink_xchan = '%s' and xlink_link = '%s' and xlink_static = 1",
 					dbesc($rr['channel']),
 					dbesc($rr['target'])
 				);
-				if($x && $x[0]['xlink_updated'] >= $rr['edited'])
+				if ($x && $x[0]['xlink_updated'] >= $rr['edited'])
 					continue;
 
 				// Ratings are signed by the rater. We need to verify before we can accept it.
-				// TODO - queue or defer if the xchan is not yet present on our site
+				/** @TODO Queue or defer if the xchan is not yet present on our site */
 
 				$y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1",
 					dbesc($rr['channel'])
 				);
-				if(! $y) {
+				if (! $y) {
 					logger('key unavailable on this site for ' . $rr['channel']);
 					continue;
 				}
-				if(! rsa_verify($rr['target'] . '.' . $rr['rating'] . '.' . $rr['rating_text'], base64url_decode($rr['signature']),$y[0]['xchan_pubkey'])) {
-			        logger('failed to verify rating');
+				if (! rsa_verify($rr['target'] . '.' . $rr['rating'] . '.' . $rr['rating_text'], base64url_decode($rr['signature']),$y[0]['xchan_pubkey'])) {
+					logger('failed to verify rating');
 					continue;
 				}
 
-				if($x) {
+				if ($x) {
 					$z = q("update xlink set xlink_rating = %d, xlink_rating_text = '%s', xlink_sig = '%s', xlink_updated = '%s' where xlink_id = %d",
 						intval($rr['rating']),
 						dbesc($rr['rating_text']),
 						dbesc($rr['signature']),
 						dbesc(datetime_convert()),
 						intval($x[0]['xlink_id'])
-	        		);
-			        logger('rating updated');
-    			}
-    			else {
-        			$z = q("insert into xlink ( xlink_xchan, xlink_link, xlink_rating, xlink_rating_text, xlink_sig, xlink_updated, xlink_static ) values( '%s', '%s', %d, '%s', '%s', '%s', 1 ) ",
+					);
+					logger('rating updated');
+				} else {
+					$z = q("insert into xlink ( xlink_xchan, xlink_link, xlink_rating, xlink_rating_text, xlink_sig, xlink_updated, xlink_static ) values( '%s', '%s', %d, '%s', '%s', '%s', 1 ) ",
 						dbesc($rr['channel']),
 						dbesc($rr['target']),
 						intval($rr['rating']),
@@ -321,50 +318,51 @@ function sync_directories($dirmode) {
 
 
 /**
- * $function update_directory_entry($ud)
+ * @brief
  *
- * @param array $ud; // Entry from update table
- * Given an update record, probe the channel, grab a zot-info packet and refresh/sync the data  
+ * Given an update record, probe the channel, grab a zot-info packet and refresh/sync the data.
  *
- * Ignore updating records marked as deleted
+ * Ignore updating records marked as deleted.
  *
- * If successful, 
- *   sets ud_last in the DB to the current datetime for this reddress/webbie
+ * If successful, sets ud_last in the DB to the current datetime for this
+ * reddress/webbie.
+ *
+ * @param array $ud Entry from update table
  */
-
 function update_directory_entry($ud) {
 
 	logger('update_directory_entry: ' . print_r($ud,true), LOGGER_DATA);
 
-	if($ud['ud_addr'] && (! ($ud['ud_flags'] & UPDATE_FLAGS_DELETED))) {
+	if ($ud['ud_addr'] && (! ($ud['ud_flags'] & UPDATE_FLAGS_DELETED))) {
 		$success = false;
-		$x = zot_finger($ud['ud_addr'],'');
-		if($x['success']) {
-			$j = json_decode($x['body'],true);
-			if($j)
+		$x = zot_finger($ud['ud_addr'], '');
+		if ($x['success']) {
+			$j = json_decode($x['body'], true);
+			if ($j)
 				$success = true;
-			$y = import_xchan($j,0,$ud);
+
+			$y = import_xchan($j, 0, $ud);
 		}
-		if(! $success) {
-			$r = q("update updates set ud_last = '%s' where ud_addr = '%s'",
+		if (! $success) {
+			q("update updates set ud_last = '%s' where ud_addr = '%s'",
 				dbesc(datetime_convert()),
 				dbesc($ud['ud_addr'])
 			);
 		}
 	}
-
 }
 
 
 /**
- * @function local_dir_update($uid,$force)
- *     push local channel updates to a local directory server
- *  This is called from include/directory.php if a profile is to be pushed
- *  to the directory and the local hub in this case is any kind of directory server. 
+ * @brief Push local channel updates to a local directory server.
  *
+ * This is called from include/directory.php if a profile is to be pushed to the
+ * directory and the local hub in this case is any kind of directory server.
+ *
+ * @param int $uid
+ * @param boolean $force
  */
-
-function local_dir_update($uid,$force) {
+function local_dir_update($uid, $force) {
 
 	logger('local_dir_update: uid: ' . $uid, LOGGER_DEBUG);
 
@@ -375,12 +373,12 @@ function local_dir_update($uid,$force) {
 	$profile = array();
 	$profile['encoding'] = 'zot';
 
-	if($p) {
+	if ($p) {
 		$hash = $p[0]['channel_hash'];
 
 		$profile['description'] = $p[0]['pdesc'];
 		$profile['birthday']    = $p[0]['dob'];
-		if($age = age($p[0]['dob'],$p[0]['channel_timezone'],''))  
+		if ($age = age($p[0]['dob'],$p[0]['channel_timezone'],''))  
 			$profile['age'] = $age;
 
 		$profile['gender']      = $p[0]['gender'];
@@ -394,14 +392,15 @@ function local_dir_update($uid,$force) {
 		$profile['homepage']    = $p[0]['homepage'];
 		$profile['hometown']    = $p[0]['hometown'];
 
-		if($p[0]['keywords']) {
+		if ($p[0]['keywords']) {
 			$tags = array();
-			$k = explode(' ',$p[0]['keywords']);
-			if($k)
-				foreach($k as $kk)
-					if(trim($kk))
+			$k = explode(' ', $p[0]['keywords']);
+			if ($k)
+				foreach ($k as $kk)
+					if (trim($kk))
 						$tags[] = trim($kk);
-			if($tags)
+
+			if ($tags)
 				$profile['keywords'] = $tags;
 		}
 
@@ -414,26 +413,23 @@ function local_dir_update($uid,$force) {
 		);
 
 		// Be careful - XCHAN_FLAGS_HIDDEN should evaluate to 1
-		if(($r[0]['xchan_flags'] & XCHAN_FLAGS_HIDDEN) != $hidden)
+		if (($r[0]['xchan_flags'] & XCHAN_FLAGS_HIDDEN) != $hidden)
 			$new_flags = $r[0]['xchan_flags'] ^ XCHAN_FLAGS_HIDDEN;
 		else
 			$new_flags = $r[0]['xchan_flags'];
-		
-		if($new_flags != $r[0]['xchan_flags']) {			
 
+		if ($new_flags != $r[0]['xchan_flags']) {
 			$r = q("update xchan set xchan_flags = %d  where xchan_hash = '%s'",
 				intval($new_flags),
 				dbesc($p[0]['channel_hash'])
 			);
-
 		}
 
 		$address = $p[0]['channel_address'] . '@' . get_app()->get_hostname();
 
-		if(perm_is_allowed($uid,'','view_profile')) {
-			import_directory_profile($hash,$profile,$address,0);
-		}
-		else {
+		if (perm_is_allowed($uid, '', 'view_profile')) {
+			import_directory_profile($hash, $profile, $address, 0);
+		} else {
 			// they may have made it private
 			$r = q("delete from xprof where xprof_hash = '%s'",
 				dbesc($hash)
@@ -445,7 +441,5 @@ function local_dir_update($uid,$force) {
 	}
 
 	$ud_hash = random_string() . '@' . get_app()->get_hostname();
-	update_modtime($hash,$ud_hash,$p[0]['channel_address'] . '@' . get_app()->get_hostname(),(($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED));
-
+	update_modtime($hash, $ud_hash, $p[0]['channel_address'] . '@' . get_app()->get_hostname(),(($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED));
 }
-	
diff --git a/include/directory.php b/include/directory.php
index 801d4ec8e..9ab1d805b 100644
--- a/include/directory.php
+++ b/include/directory.php
@@ -1,14 +1,23 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/directory.php
+ * @brief executes directory_run()
+ */
 
 require_once('boot.php');
 require_once('include/zot.php');
 require_once('include/cli_startup.php');
 require_once('include/dir_fns.php');
 
-
+/**
+ * @brief
+ *
+ * @param array $argv
+ * @param array $argc
+ */
 function directory_run($argv, $argc){
 
-	cli_startup();		 
+	cli_startup();
 
 	if($argc < 2)
 		return;
@@ -37,7 +46,6 @@ function directory_run($argv, $argc){
 
 	$channel = $x[0];
 
-
 	if($dirmode != DIRECTORY_MODE_NORMAL) {
 
 		// this is an in-memory update and we don't need to send a network packet.
@@ -70,8 +78,9 @@ function directory_run($argv, $argc){
 
 	if(! $z['success']) {
 
-		// FIXME - we aren't updating channel_dirdate if we have to queue
-		// the directory packet. That means we'll try again on the next poll run.
+		/** @FIXME we aren't updating channel_dirdate if we have to queue
+		 * the directory packet. That means we'll try again on the next poll run.
+		 */
 
 		$hash = random_string();
 		q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) 
@@ -87,8 +96,7 @@ function directory_run($argv, $argc){
 			dbesc($packet),
 			dbesc('')
 		);
-	}
-	else {
+	} else {
 		q("update channel set channel_dirdate = '%s' where channel_id = %d",
 			dbesc(datetime_convert()),
 			intval($channel['channel_id'])
@@ -101,7 +109,7 @@ function directory_run($argv, $argc){
 
 }
 
-if (array_search(__file__,get_included_files())===0){
-  directory_run($argv,$argc);
-  killme();
+if (array_search(__file__, get_included_files()) === 0) {
+	directory_run($argv, $argc);
+	killme();
 }
diff --git a/include/enotify.php b/include/enotify.php
index 36d457c10..e801c3100 100644
--- a/include/enotify.php
+++ b/include/enotify.php
@@ -1,33 +1,50 @@
-<?php /** @file */
-
+<?php
+/**
+ * @file include/enotify.php
+ *
+ * @brief File with functions and a class for email notifications.
+ */
+
+/**
+ * @brief
+ *
+ * @param array $params an assoziative array with:
+ *  * \e string \b from_xchan sender xchan hash
+ *  * \e string \b to_xchan recipient xchan hash
+ *  * \e array \b item an assoziative array
+ *  * \e int \b type one of the NOTIFY_* constants from boot.php
+ *  * \e string \b link
+ *  * \e string \b parent_mid
+ *  * \e string \b otype
+ *  * \e string \b verb
+ *  * \e string \b activity
+ */
 function notification($params) {
 
 	logger('notification: entry', LOGGER_DEBUG);
 
 	// throw a small amount of entropy into the system to breakup duplicates arriving at the same precise instant.
-	usleep(mt_rand(0,10000));
-	
+	usleep(mt_rand(0, 10000));
 
 	$a = get_app();
 
 
-	if($params['from_xchan']) {
+	if ($params['from_xchan']) {
 		$x = q("select * from xchan where xchan_hash = '%s' limit 1",
 			dbesc($params['from_xchan'])
 		);
 	}
-	if($params['to_xchan']) {
+	if ($params['to_xchan']) {
 		$y = q("select channel.*, account.* from channel left join account on channel_account_id = account_id
 			where channel_hash = '%s' and not (channel_pageflags & %d)>0 limit 1",
 			dbesc($params['to_xchan']),
 			intval(PAGE_REMOVED)
 		);
 	}
-	if($x & $y) {
+	if ($x & $y) {
 		$sender = $x[0];
 		$recip = $y[0];
-	}
-	else {
+	} else {
 		logger('notification: no sender or recipient.');
 		logger('sender: ' . $params['from_xchan']);
 		logger('recip: ' . $params['to_xchan']);
@@ -55,10 +72,10 @@ function notification($params) {
 
 	$additional_mail_header = "";
 
-	if(array_key_exists('item',$params)) {
+	if (array_key_exists('item', $params)) {
 		require_once('include/conversation.php');
 		// if it's a normal item...
-		if(array_key_exists('verb',$params['item'])) {
+		if (array_key_exists('verb', $params['item'])) {
 			// localize_item() alters the original item so make a copy first
 			$i = $params['item'];
 			logger('calling localize');
@@ -66,13 +83,11 @@ function notification($params) {
 			$title = $i['title'];
 			$body = $i['body'];
 			$private = (($i['item_private']) || ($i['item_flags'] & ITEM_OBSCURED));
-		}
-		else {
+		} else {
 			$title = $params['item']['title'];
 			$body = $params['item']['body'];
 		}
-	}
-	else {
+	} else {
 		$title = $body = '';
 	}
 
@@ -80,7 +95,7 @@ function notification($params) {
 	// e.g. "your post", "David's photo", etc.
 	$possess_desc = t('%s <!item_type!>');
 
-	if($params['type'] == NOTIFY_MAIL) {
+	if ($params['type'] == NOTIFY_MAIL) {
 		logger('notification: mail');
 		$subject = 	sprintf( t('[Red:Notify] New mail received at %s'),$sitename);
 
@@ -92,28 +107,27 @@ function notification($params) {
 		$itemlink = $siteurl . '/mail/' . $params['item']['id'];
 	}
 
-	if($params['type'] == NOTIFY_COMMENT) {
+	if ($params['type'] == NOTIFY_COMMENT) {
 //		logger("notification: params = " . print_r($params, true), LOGGER_DEBUG);
 
 		$itemlink =  $params['link'];
 
-
 		// ignore like/unlike activity on posts - they probably require a sepearate notification preference
 
-		if(array_key_exists('item',$params) && (! visible_activity($params['item'])))
+		if (array_key_exists('item',$params) && (! visible_activity($params['item'])))
 			return;
 
 		$parent_mid = $params['parent_mid'];
 
 		// Check to see if there was already a notify for this post.
 		// If so don't create a second notification
-		
+
 		$p = null;
 		$p = q("select id from notify where link = '%s' and uid = %d limit 1",
 			dbesc($params['link']),
 			intval($recip['channel_id'])
 		);
-		if($p) {
+		if ($p) {
 			logger('notification: comment already notified');
 			pop_lang();
 			return;
@@ -182,26 +196,26 @@ function notification($params) {
 		$subject = sprintf( t('[Red:Notify] %s posted to your profile wall') , $sender['xchan_name']);
 
 		$preamble = sprintf( t('%1$s, %2$s posted to your profile wall at %3$s') , $recip['channel_name'], $sender['xchan_name'], $sitename);
-		
+
 		$epreamble = sprintf( t('%1$s, %2$s posted to [zrl=%3$s]your wall[/zrl]') ,
 			$recip['channel_name'], 
 			'[zrl=' . $sender['xchan_url'] . ']' . $sender['xchan_name'] . '[/zrl]',
 			$params['link']); 
-		
+
 		$sitelink = t('Please visit %s to view and/or reply to the conversation.');
 		$tsitelink = sprintf( $sitelink, $siteurl );
 		$hsitelink = sprintf( $sitelink, '<a href="' . $siteurl . '">' . $sitename . '</a>');
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_TAGSELF) {
+	if ($params['type'] == NOTIFY_TAGSELF) {
 
 		$p = null;
 		$p = q("select id from notify where link = '%s' and uid = %d limit 1",
 			dbesc($params['link']),
 			intval($recip['channel_id'])
 		);
-		if($p) {
+		if ($p) {
 			logger('enotify: tag: already notified about this post');
 			pop_lang();
 			return;
@@ -220,8 +234,7 @@ function notification($params) {
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_POKE) {
-
+	if ($params['type'] == NOTIFY_POKE) {
 		$subject =	sprintf( t('[Red:Notify] %1$s poked you') , $sender['xchan_name']);
 		$preamble = sprintf( t('%1$s, %2$s poked you at %3$s') , $recip['channel_name'], $sender['xchan_name'], $sitename);
 		$epreamble = sprintf( t('%1$s, %2$s [zrl=%2$s]poked you[/zrl].') ,
@@ -239,7 +252,7 @@ function notification($params) {
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_TAGSHARE) {
+	if ($params['type'] == NOTIFY_TAGSHARE) {
 		$subject =	sprintf( t('[Red:Notify] %s tagged your post') , $sender['xchan_name']);
 		$preamble = sprintf( t('%1$s, %2$s tagged your post at %3$s') , $recip['channel_name'],$sender['xchan_name'], $sitename);
 		$epreamble = sprintf( t('%1$s, %2$s tagged [zrl=%3$s]your post[/zrl]') ,
@@ -253,7 +266,7 @@ function notification($params) {
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_INTRO) {
+	if ($params['type'] == NOTIFY_INTRO) {
 		$subject = sprintf( t('[Red:Notify] Introduction received'));
 		$preamble = sprintf( t('%1$s, you\'ve received an new connection request from \'%2$s\' at %3$s'), $recip['channel_name'], $sender['xchan_name'], $sitename); 
 		$epreamble = sprintf( t('%1$s, you\'ve received [zrl=%2$s]a new connection request[/zrl] from %3$s.'),
@@ -268,7 +281,7 @@ function notification($params) {
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_SUGGEST) {
+	if ($params['type'] == NOTIFY_SUGGEST) {
 		$subject = sprintf( t('[Red:Notify] Friend suggestion received'));
 		$preamble = sprintf( t('%1$s, you\'ve received a friend suggestion from \'%2$s\' at %3$s'), $recip['channel_name'], $sender['xchan_name'], $sitename); 
 		$epreamble = sprintf( t('%1$s, you\'ve received [zrl=%2$s]a friend suggestion[/zrl] for %3$s from %4$s.'),
@@ -276,7 +289,7 @@ function notification($params) {
 			$itemlink,
 			'[zrl=' . $params['item']['url'] . ']' . $params['item']['name'] . '[/zrl]',
 			'[zrl=' . $sender['xchan_url'] . ']' . $sender['xchan_name'] . '[/zrl]'); 
-									
+
 		$body = t('Name:') . ' ' . $params['item']['name'] . "\n";
 		$body .= t('Photo:') . ' ' . $params['item']['photo'] . "\n";
 		$body .= sprintf( t('You may visit their profile at %s'),$params['item']['url']);
@@ -287,27 +300,27 @@ function notification($params) {
 		$itemlink =  $params['link'];
 	}
 
-	if($params['type'] == NOTIFY_CONFIRM) {
-
+	if ($params['type'] == NOTIFY_CONFIRM) {
+		// ?
 	}
 
-	if($params['type'] == NOTIFY_SYSTEM) {
-		
+	if ($params['type'] == NOTIFY_SYSTEM) {
+		// ?
 	}
 
 	$h = array(
-		'params'    => $params, 
+		'params'    => $params,
 		'subject'   => $subject,
-		'preamble'  => $preamble, 
-		'epreamble' => $epreamble, 
-		'body'      => $body, 
+		'preamble'  => $preamble,
+		'epreamble' => $epreamble,
+		'body'      => $body,
 		'sitelink'  => $sitelink,
 		'tsitelink' => $tsitelink,
 		'hsitelink' => $hsitelink,
 		'itemlink'  => $itemlink
 	);
-		
-	call_hooks('enotify',$h);
+
+	call_hooks('enotify', $h);
 
 	$subject   = $h['subject'];
 	$preamble  = $h['preamble'];
@@ -319,16 +332,16 @@ function notification($params) {
 	$itemlink  = $h['itemlink']; 
 
 
-	require_once('include/html2bbcode.php');	
+	require_once('include/html2bbcode.php');
 
 	do {
 		$dups = false;
 		$hash = random_string();
-        $r = q("SELECT `id` FROM `notify` WHERE `hash` = '%s' LIMIT 1",
+		$r = q("SELECT `id` FROM `notify` WHERE `hash` = '%s' LIMIT 1",
 			dbesc($hash));
-		if(count($r))
+		if (count($r))
 			$dups = true;
-	} while($dups == true);
+	} while ($dups === true);
 
 
 	$datarray = array();
@@ -348,10 +361,10 @@ function notification($params) {
  	$datarray['abort']  = false;
 
 	$datarray['item'] = $params['item'];
- 
+
 	call_hooks('enotify_store', $datarray);
 
-	if($datarray['abort']) {
+	if ($datarray['abort']) {
 		pop_lang();
 		return;
 	}
@@ -365,8 +378,8 @@ function notification($params) {
 	// So easiest solution to hide them from Notices is to mark them as seen right away.
 	// Another option would be to not add them to the DB, and change how emails are handled (probably would be better that way)
 	$always_show_in_notices = get_pconfig($recip['channel_id'],'system','always_show_in_notices');
-	if(!$always_show_in_notices) {
-		if(($params['type'] == NOTIFY_WALL) || ($params['type'] == NOTIFY_MAIL) || ($params['type'] == NOTIFY_INTRO)) {
+	if (!$always_show_in_notices) {
+		if (($params['type'] == NOTIFY_WALL) || ($params['type'] == NOTIFY_MAIL) || ($params['type'] == NOTIFY_INTRO)) {
 			$seen = 1;
 		}
 	}
@@ -392,9 +405,9 @@ function notification($params) {
 		dbesc($hash),
 		intval($recip['channel_id'])
 	);
-	if($r)
+	if ($r) {
 		$notify_id = $r[0]['id'];
-	else {
+	} else {
 		logger('notification not found.');
 		pop_lang();
 		return;
@@ -405,7 +418,7 @@ function notification($params) {
 
 	// wretched hack, but we don't want to duplicate all the preamble variations and we also don't want to screw up a translation
 
-	if(($a->language === 'en' || (! $a->language)) && strpos($msg,', '))
+	if (($a->language === 'en' || (! $a->language)) && strpos($msg,', '))
 		$msg = substr($msg,strpos($msg,', ')+1);	
 
 	$r = q("update notify set msg = '%s' where id = %d and uid = %d",
@@ -413,12 +426,11 @@ function notification($params) {
 		intval($notify_id),
 		intval($datarray['uid'])
 	);
-		
 
 	// send email notification if notification preferences permit
 
 	require_once('bbcode.php');
-	if((intval($recip['channel_notifyflags']) & intval($params['type'])) || $params['type'] == NOTIFY_SYSTEM) {
+	if ((intval($recip['channel_notifyflags']) & intval($params['type'])) || $params['type'] == NOTIFY_SYSTEM) {
 
 		logger('notification: sending notification email');
 
@@ -429,8 +441,6 @@ function notification($params) {
 			return;
 		}
 
-
-
 		$textversion = strip_tags(html_entity_decode(bbcode(stripslashes(str_replace(array("\\r", "\\n"), array( "", "\n"), $body))),ENT_QUOTES,'UTF-8'));
 
 		$htmlversion = bbcode(stripslashes(str_replace(array("\\r","\\n"), array("","<br />\n"),$body)));
@@ -450,7 +460,6 @@ function notification($params) {
 		unset($_SESSION['zid_override']);
 		unset($_SESSION['zrl_override']);
 
-
 		$datarray = array();
 		$datarray['banner']       = $banner;
 		$datarray['product']      = $product;
@@ -485,13 +494,13 @@ function notification($params) {
 
 		$private_activity = false;
 
-		if(! $datarray['email_secure']) {
-			switch($params['type']) {
+		if (! $datarray['email_secure']) {
+			switch ($params['type']) {
 				case NOTIFY_WALL:
 				case NOTIFY_TAGSELF:
 				case NOTIFY_POKE:
 				case NOTIFY_COMMENT:
-					if(! $private)
+					if (! $private)
 						break;
 					$private_activity = true;
 				case NOTIFY_MAIL:
@@ -503,11 +512,12 @@ function notification($params) {
 			}
 		}
 
-		if($private_activity 
-			&& intval(get_pconfig($datarray['uid'],'system','ignore_private_notifications'))) {
+		if ($private_activity
+			&& intval(get_pconfig($datarray['uid'], 'system', 'ignore_private_notifications'))) {
+
 			pop_lang();
 			return;
-		}		
+		}
 
 		// load the template for private message notifications
 		$tpl = get_markup_template('email_notify_html.tpl');
@@ -525,13 +535,13 @@ function notification($params) {
 			'$hitemlink'    => $datarray['hitemlink'],
 			'$thanks'       => $datarray['thanks'],
 			'$site_admin'   => $datarray['site_admin'],
-			'$title'		=> $datarray['title'],
-			'$htmlversion'	=> $datarray['htmlversion'],	
+			'$title'        => $datarray['title'],
+			'$htmlversion'  => $datarray['htmlversion'],
 		));
-		
+
 		// load the template for private message notifications
 		$tpl = get_markup_template('email_notify_text.tpl');
-		$email_text_body = replace_macros($tpl,array(
+		$email_text_body = replace_macros($tpl, array(
 			'$banner'       => $datarray['banner'],
 			'$product'      => $datarray['product'],
 			'$preamble'     => $datarray['preamble'],
@@ -545,8 +555,8 @@ function notification($params) {
 			'$titemlink'    => $datarray['titemlink'],
 			'$thanks'       => $datarray['thanks'],
 			'$site_admin'   => $datarray['site_admin'],
-			'$title'		=> $datarray['title'],
-			'$textversion'	=> $datarray['textversion'],	
+			'$title'        => $datarray['title'],
+			'$textversion'  => $datarray['textversion'],
 		));
 
 //		logger('text: ' . $email_text_body);
@@ -570,41 +580,48 @@ function notification($params) {
 }
 
 
+/**
+ * @brief A class for sending email notifications.
+ *
+ * @fixme Class names start mostly with capital letter to distinguish them easier.
+ */
 class enotify {
 	/**
-	 * Send a multipart/alternative message with Text and HTML versions
+	 * @brief Send a multipart/alternative message with Text and HTML versions.
 	 *
-	 * @param fromName			name of the sender
-	 * @param fromEmail			email fo the sender
-	 * @param replyTo			replyTo address to direct responses
-	 * @param toEmail			destination email address
-	 * @param messageSubject	subject of the message
-	 * @param htmlVersion		html version of the message
-	 * @param textVersion		text only version of the message
-	 * @param additionalMailHeader	additions to the smtp mail header
+	 * @param array $params an assoziative array with:
+	 *  * \e string \b fromName        name of the sender
+	 *  * \e string \b fromEmail       email of the sender
+	 *  * \e string \b replyTo         replyTo address to direct responses
+	 *  * \e string \b toEmail         destination email address
+	 *  * \e string \b messageSubject  subject of the message
+	 *  * \e string \b htmlVersion     html version of the message
+	 *  * \e string \b textVersion     text only version of the message
+	 *  * \e string \b additionalMailHeader  additions to the smtp mail header
 	 */
 	static public function send($params) {
 
 		$fromName = email_header_encode(html_entity_decode($params['fromName'],ENT_QUOTES,'UTF-8'),'UTF-8'); 
 		$messageSubject = email_header_encode(html_entity_decode($params['messageSubject'],ENT_QUOTES,'UTF-8'),'UTF-8');
-		
+
 		// generate a mime boundary
-		$mimeBoundary   =rand(0,9)."-"
-				.rand(10000000000,9999999999)."-"
-				.rand(10000000000,9999999999)."=:"
-				.rand(10000,99999);
+		$mimeBoundary = rand(0, 9) . "-"
+				.rand(10000000000, 9999999999) . "-"
+				.rand(10000000000, 9999999999) . "=:"
+				.rand(10000, 99999);
 
 		// generate a multipart/alternative message header
 		$messageHeader =
 			$params['additionalMailHeader'] .
-			"From: $fromName <{$params['fromEmail']}>\n" . 
+			"From: $fromName <{$params['fromEmail']}>\n" .
 			"Reply-To: $fromName <{$params['replyTo']}>\n" .
 			"MIME-Version: 1.0\n" .
 			"Content-Type: multipart/alternative; boundary=\"{$mimeBoundary}\"";
 
 		// assemble the final multipart message body with the text and html types included
-		$textBody	=	chunk_split(base64_encode($params['textVersion']));
-		$htmlBody	=	chunk_split(base64_encode($params['htmlVersion']));
+		$textBody = chunk_split(base64_encode($params['textVersion']));
+		$htmlBody = chunk_split(base64_encode($params['htmlVersion']));
+
 		$multipartMessageBody =
 			"--" . $mimeBoundary . "\n" .					// plain text section
 			"Content-Type: text/plain; charset=UTF-8\n" .
@@ -618,12 +635,11 @@ class enotify {
 
 		// send the message
 		$res = mail(
-			$params['toEmail'],	 							// send to address
+			$params['toEmail'],								// send to address
 			$messageSubject,								// subject
-			$multipartMessageBody,	 						// message body
+			$multipartMessageBody,							// message body
 			$messageHeader									// message headers
 		);
 		logger("notification: enotify::send returns " . $res, LOGGER_DEBUG);
 	}
-}
-
+}
\ No newline at end of file
diff --git a/include/event.php b/include/event.php
index 1ed541d99..05f01535c 100644
--- a/include/event.php
+++ b/include/event.php
@@ -1,6 +1,14 @@
-<?php /** @file */
-
-
+<?php
+/**
+ * @file include/event.php
+ */
+
+/**
+ * @brief Returns an event as HTML
+ *
+ * @param array $ev
+ * @return string
+ */
 function format_event_html($ev) {
 
 	require_once('include/bbcode.php');
@@ -12,13 +20,12 @@ function format_event_html($ev) {
 
 	$o = '<div class="vevent">' . "\r\n";
 
-
 	$o .= '<p class="summary event-summary">' . bbcode($ev['summary']) .  '</p>' . "\r\n";
 
 	$o .= '<p class="description event-description">' . bbcode($ev['description']) .  '</p>' . "\r\n";
 
 	$o .= '<p class="event-start">' . t('Starts:') . ' <abbr class="dtstart" title="'
-		. datetime_convert('UTC','UTC',$ev['start'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
+		. datetime_convert('UTC', 'UTC', $ev['start'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
 		. '" >' 
 		. (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(), 
 			$ev['start'] , $bd_format ))
@@ -38,15 +45,15 @@ function format_event_html($ev) {
 
 	if(strlen($ev['location']))
 		$o .= '<p class="event-location"> ' . t('Location:') . ' <span class="location">' 
-			. bbcode($ev['location']) 
+			. bbcode($ev['location'])
 			. '</span></p>' . "\r\n";
 
 	$o .= '</div>' . "\r\n";
+
 	return $o;
 }
 
 
-
 function ical_wrapper($ev) {
 
 	if(! ((is_array($ev)) && count($ev)))
@@ -56,7 +63,7 @@ function ical_wrapper($ev) {
 	$o .= "\nVERSION:2.0";
 	$o .= "\nMETHOD:PUBLISH";
 	$o .= "\nPRODID:-//" . get_config('system','sitename') . "//" . RED_PLATFORM . "//" . strtoupper(get_app()->language). "\n";
-	if(array_key_exists('start',$ev))
+	if(array_key_exists('start', $ev))
 		$o .= format_event_ical($ev);
 	else {
 		foreach($ev as $e) {
@@ -84,13 +91,15 @@ function format_event_ical($ev) {
 	if($ev['description']) 
 		$o .= "\nDESCRIPTION:" . format_ical_text($ev['description']);
 	$o .= "\nEND:VEVENT\n";
+
 	return $o;
 }
 
-function format_ical_text($s) {
 
+function format_ical_text($s) {
 	require_once('include/bbcode.php');
 	require_once('include/html2plain.php');
+
 	return(wordwrap(html2plain(bbcode($s)),72,"\n ",true));
 }
 
@@ -117,16 +126,16 @@ function format_event_bbcode($ev) {
 	if($ev['adjust'])
 		$o .= '[event-adjust]' . $ev['adjust'] . '[/event-adjust]';
 
-
 	return $o;
-
 }
 
+
 function bbtovcal($s) {
 	$o = '';
 	$ev = bbtoevent($s);
 	if($ev['description'])
 		$o = format_event_html($ev);
+
 	return $o;
 }
 
@@ -154,27 +163,41 @@ function bbtoevent($s) {
 	if(preg_match("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",$s,$match))
 		$ev['adjust'] = $match[1];
 	$ev['nofinish'] = (((x($ev, 'start') && $ev['start']) && (!x($ev, 'finish') || !$ev['finish'])) ? 1 : 0);
-	return $ev;
 
+	return $ev;
 }
 
-
+/**
+ * @brief Sorts the given array of events by date.
+ *
+ * @see ev_compare()
+ * @param array $arr
+ * @return sorted array
+ */
 function sort_by_date($arr) {
-	if(is_array($arr))
-		usort($arr,'ev_compare');
+	if (is_array($arr))
+		usort($arr, 'ev_compare');
+
 	return $arr;
 }
 
-
-function ev_compare($a,$b) {
+/**
+ * @brief Compare function for events.
+ *
+ * @see sort_by_date()
+ * @param array $a
+ * @param array $b
+ * @return number return values like strcmp()
+ */
+function ev_compare($a, $b) {
 
 	$date_a = (($a['adjust']) ? datetime_convert('UTC',date_default_timezone_get(),$a['start']) : $a['start']);
 	$date_b = (($b['adjust']) ? datetime_convert('UTC',date_default_timezone_get(),$b['start']) : $b['start']);
 
-	if($date_a === $date_b)
-		return strcasecmp($a['description'],$b['description']);
-	
-	return strcmp($date_a,$date_b);
+	if ($date_a === $date_b)
+		return strcasecmp($a['description'], $b['description']);
+
+	return strcmp($date_a, $date_b);
 }
 
 
@@ -182,11 +205,9 @@ function event_store_event($arr) {
 
 	$arr['created']     = (($arr['created'])     ? $arr['created']     : datetime_convert());
 	$arr['edited']      = (($arr['edited'])      ? $arr['edited']      : datetime_convert());
-	$arr['type']        = (($arr['type'])        ? $arr['type']        : 'event' );	
+	$arr['type']        = (($arr['type'])        ? $arr['type']        : 'event' );
 	$arr['event_xchan'] = (($arr['event_xchan']) ? $arr['event_xchan'] : '');
 
-
-
 	// Existing event being modified
 
 	if($arr['id'] || $arr['event_hash']) {
@@ -206,7 +227,6 @@ function event_store_event($arr) {
 			);
 		}
 
-
 		if(! $r)
 			return false;
 
@@ -216,7 +236,7 @@ function event_store_event($arr) {
 		}
 
 		$hash = $r[0]['event_hash'];
-		
+
 		// The event changed. Update it.
 
 		$r = q("UPDATE `event` SET
@@ -251,14 +271,12 @@ function event_store_event($arr) {
 			intval($r[0]['id']),
 			intval($arr['uid'])
 		);
-	}
-	else {
+	} else {
 
-		// New event. Store it. 
+		// New event. Store it.
 
 		$hash = random_string();
 
-
 		$r = q("INSERT INTO event ( uid,aid,event_xchan,event_hash,created,edited,start,finish,summary,description,location,type,
 			adjust,nofinish,allow_cid,allow_gid,deny_cid,deny_gid)
 			VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s' ) ",
@@ -280,7 +298,6 @@ function event_store_event($arr) {
 			dbesc($arr['allow_gid']),
 			dbesc($arr['deny_cid']),
 			dbesc($arr['deny_gid'])
-
 		);
 	}
 
@@ -292,7 +309,6 @@ function event_store_event($arr) {
 		return $r[0];
 
 	return false;
-
 }
 
 function event_addtocal($item_id, $uid) {
@@ -339,22 +355,21 @@ function event_addtocal($item_id, $uid) {
 				intval($item['id']),
 				intval($channel['channel_id'])
 			);
+
 			return true;
 		}
 	}
+
 	return false;
 }
 
 
-
-function event_store_item($arr,$event) {
+function event_store_item($arr, $event) {
 
 	require_once('include/datetime.php');
 	require_once('include/items.php');
 	require_once('include/bbcode.php');
 
-	$a = get_app();
-
 	$item = null;
 
 	if($arr['mid'] && $arr['uid']) {
@@ -370,28 +385,28 @@ function event_store_item($arr,$event) {
 
 	$item_arr = array();
 	$prefix = '';
-	$birthday = false;
+//	$birthday = false;
 
 	if($event['type'] === 'birthday') {
 		$prefix =  t('This event has been added to your calendar.');
-		$birthday = true;
+//		$birthday = true;
 
 		// The event is created on your own site by the system, but appears to belong 
 		// to the birthday person. It also isn't propagated - so we need to prevent
 		// folks from trying to comment on it. If you're looking at this and trying to 
 		// fix it, you'll need to completely change the way birthday events are created
-		// and send them out from the source. This has its own issues. 
+		// and send them out from the source. This has its own issues.
 
 		$item_arr['comment_policy'] = 'none';
 	}
 
 	$r = q("SELECT * FROM item left join xchan on author_xchan = xchan_hash WHERE resource_id = '%s' AND resource_type = 'event' and uid = %d LIMIT 1",
-        dbesc($event['event_hash']),
+		dbesc($event['event_hash']),
 		intval($arr['uid'])
 	);
 
 	if($r) {
-		$obj = json_encode(array(
+		$object = json_encode(array(
 			'type'    => ACTIVITY_OBJ_EVENT,
 			'id'      => z_root() . '/event/' . $r[0]['resource_id'],
 			'title'   => $arr['summary'],
@@ -424,8 +439,7 @@ function event_store_item($arr,$event) {
 			intval($arr['uid'])
 		);
 
-
-		$s = q("delete from term where oid = %d and otype = %d",
+		q("delete from term where oid = %d and otype = %d",
 			intval($r[0]['id']),
 			intval(TERM_OBJ_POST)
 		);
@@ -442,21 +456,19 @@ function event_store_item($arr,$event) {
 					dbesc($t['url'])
 				);
 			}
-		}	
+		}
 
 		$item_id = $r[0]['id'];
 		call_hooks('event_updated', $event['id']);
+
 		return $item_id;
-	}
-	else {
+	} else {
 
 		$z = q("select * from channel where channel_id = %d limit 1",
 			intval($arr['uid'])
 		);
 
-
 		$private = (($arr['allow_cid'] || $arr['allow_gid'] || $arr['deny_cid'] || $arr['deny_gid']) ? 1 : 0);
-				
 
 		if($item) {
 			$item_arr['id'] = $item['id'];
@@ -469,8 +481,7 @@ function event_store_item($arr,$event) {
 				$item_flags |= ITEM_WALL;
 				$item_flags |= ITEM_ORIGIN;
 			}
-			$item_arr['item_flags']    = $item_flags;
-
+			$item_arr['item_flags'] = $item_flags;
 		}
 
 		if(! $arr['mid'])
@@ -482,7 +493,6 @@ function event_store_item($arr,$event) {
 		$item_arr['mid']           = $arr['mid'];
 		$item_arr['parent_mid']    = $arr['mid'];
 
-
 		$item_arr['owner_xchan']   = (($wall) ? $z[0]['channel_hash'] : $arr['event_xchan']);
 		$item_arr['author_xchan']  = $arr['event_xchan'];
 		$item_arr['title']         = $arr['summary'];
@@ -493,9 +503,8 @@ function event_store_item($arr,$event) {
 		$item_arr['item_private']  = $private;
 		$item_arr['verb']          = ACTIVITY_POST;
 
-
-		if(array_key_exists('term',$arr))
-			$item_arr['term'] = $arr['term']; 
+		if(array_key_exists('term', $arr))
+			$item_arr['term'] = $arr['term'];
 
 		$item_arr['resource_type'] = 'event';
 		$item_arr['resource_id']   = $event['event_hash'];
@@ -512,15 +521,13 @@ function event_store_item($arr,$event) {
 		else
 			$item_arr['plink'] = z_root() . '/display/' . $item_arr['mid'];
 
-
 		$x = q("select * from xchan where xchan_hash = '%s' limit 1",
 				dbesc($arr['event_xchan'])
 		);
 		if($x) {
-
 			$item_arr['object'] = json_encode(array(
 				'type'    => ACTIVITY_OBJ_EVENT,
-				'id'      => z_root() . '/event/' . $hash,
+				'id'      => z_root() . '/event/' . $event['event_hash'],
 				'title'   => $arr['summary'],
 				'content' => format_event_bbcode($arr),
 				'author'  => array(
@@ -539,7 +546,7 @@ function event_store_item($arr,$event) {
 
 		$item_id = $res['item_id'];
 
-		call_hooks("event_created", $event['id']);
+		call_hooks('event_created', $event['id']);
 
 		return $item_id;
 	}
diff --git a/include/expire.php b/include/expire.php
index b244e65f5..e5d456896 100644
--- a/include/expire.php
+++ b/include/expire.php
@@ -1,4 +1,7 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/expire.php
+ */
 
 require_once('boot.php');
 require_once('include/cli_startup.php');
@@ -7,62 +10,60 @@ function expire_run($argv, $argc){
 
 	cli_startup();
 
-
 	// perform final cleanup on previously delete items
 
-	$r = q("select id from item where (item_restrict & %d) > 0 and (item_restrict & %d) = 0 
+	$r = q("select id from item where (item_restrict & %d) > 0 and (item_restrict & %d) = 0
 		and changed < %s - INTERVAL %s",
 		intval(ITEM_DELETED),
 		intval(ITEM_PENDING_REMOVE),
 		db_utcnow(), db_quoteinterval('10 DAY')
 	);
-	if($r) {
-		foreach($r as $rr) {
-			drop_item($rr['id'],false,DROPITEM_PHASE2);
+	if ($r) {
+		foreach ($r as $rr) {
+			drop_item($rr['id'], false, DROPITEM_PHASE2);
 		}
 	}
 
 	// physically remove anything that has been deleted for more than two months
-	// FIXME - this is a wretchedly inefficient query
+	/** @FIXME - this is a wretchedly inefficient query */
 
 	$r = q("delete from item where ( item_restrict & %d ) > 0 and changed < %s - INTERVAL %s",
 		intval(ITEM_PENDING_REMOVE),
 		db_utcnow(), db_quoteinterval('36 DAY')
 	);
 
-	// make this optional as it could have a performance impact on large sites
+	/** @FIXME make this optional as it could have a performance impact on large sites */
 
-	if(intval(get_config('system','optimize_items')))
+	if (intval(get_config('system', 'optimize_items')))
 		q("optimize table item");
 
 	logger('expire: start', LOGGER_DEBUG);
-	
+
 	$site_expire = get_config('system', 'default_expire_days');
 
 	logger('site_expire: ' . $site_expire);
 
 	$r = q("SELECT channel_id, channel_address, channel_pageflags, channel_expire_days from channel where true");
 
-	if($r) {
-		foreach($r as $rr) {
+	if ($r) {
+		foreach ($r as $rr) {
 
 			// expire the sys channel separately
-			if($rr['channel_pageflags'] & PAGE_SYSTEM)
+			if ($rr['channel_pageflags'] & PAGE_SYSTEM)
 				continue;
 
 			// service class default (if non-zero) over-rides the site default
 
-			$service_class_expire = service_class_fetch($rr['channel_id'],'expire_days');
-			if(intval($service_class_expire))
+			$service_class_expire = service_class_fetch($rr['channel_id'], 'expire_days');
+			if (intval($service_class_expire))
 				$channel_expire = $service_class_expire;
 			else
 				$channel_expire = $site_expire;
 
-			if(intval($channel_expire) && (intval($channel_expire) < intval($rr['channel_expire_days'])) ||
+			if (intval($channel_expire) && (intval($channel_expire) < intval($rr['channel_expire_days'])) ||
 				intval($rr['channel_expire_days'] == 0)) {
 				$expire_days = $channel_expire;
-			}
-			else {
+			} else {
 				$expire_days = $rr['channel_expire_days'];
 			}
 
@@ -72,34 +73,30 @@ function expire_run($argv, $argc){
 		}
 	}
 
-
 	$x = get_sys_channel();
-	if($x) {
+	if ($x) {
 
 		// this should probably just fetch the channel_expire_days from the sys channel,
 		// but there's no convenient way to set it.
 
-		$expire_days = get_config('system','sys_expire_days');
-		if($expire_days === false)
+		$expire_days = get_config('system', 'sys_expire_days');
+		if ($expire_days === false)
 			$expire_days = 30;
 
-		if(intval($site_expire) && (intval($site_expire) < intval($expire_days))) {
+		if (intval($site_expire) && (intval($site_expire) < intval($expire_days))) {
 			$expire_days = $site_expire;
 		}
 
 		logger('Expire: sys interval: ' . $expire_days, LOGGER_DEBUG);
 
-		if($expire_days)
-			item_expire($x['channel_id'],$expire_days);
+		if ($expire_days)
+			item_expire($x['channel_id'], $expire_days);
 
 		logger('Expire: sys: done', LOGGER_DEBUG);
-
 	}
-
-	return;
 }
 
-if (array_search(__file__,get_included_files())===0){
-  expire_run($argv,$argc);
-  killme();
+if (array_search(__file__, get_included_files()) === 0){
+	expire_run($argv, $argc);
+	killme();
 }
diff --git a/include/identity.php b/include/identity.php
index af6cb74d2..7884c04d2 100644
--- a/include/identity.php
+++ b/include/identity.php
@@ -1,27 +1,29 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/identity.php
+ */
 
 require_once('include/zot.php');
 require_once('include/crypto.php');
 
 
 /**
- * @function identity_check_service_class($account_id)
- *     Called when creating a new channel. Checks the account's service class and number
- * of current channels to determine whether creating a new channel is within the current
- * service class constraints.
+ * @brief Called when creating a new channel.
+ *
+ * Checks the account's service class and number of current channels to determine
+ * whether creating a new channel is within the current service class constraints.
  *
  * @param int $account_id
  *     Account_id used for this request
  *
- * @returns array
- *       'success' => boolean true if creating a new channel is allowed for this account
- *       'message' => if success is false, optional error text
+ * @returns assoziative array with:
+ *  * \e boolean \b success boolean true if creating a new channel is allowed for this account
+ *  * \e string \b message (optional) if success is false, optional error text
+ *  * \e int \b total_identities
  */
- 
-
 function identity_check_service_class($account_id) {
-	$ret = array('success' => false, $message => '');
-	
+	$ret = array('success' => false, 'message' => '');
+
 	$r = q("select count(channel_id) as total from channel where channel_account_id = %d and not ( channel_pageflags & %d )>0 ",
 		intval($account_id),
 		intval(PAGE_REMOVED)
@@ -30,68 +32,67 @@ function identity_check_service_class($account_id) {
 		$ret['total_identities'] = 0;
 		$ret['message'] = t('Unable to obtain identity information from database');
 		return $ret;
-	} 
+	}
 
 	$ret['total_identities'] = intval($r[0]['total']);
 
-	if(! account_service_class_allows($account_id,'total_identities',$r[0]['total'])) {
-		$result['message'] .= upgrade_message();
-		return $result;
+	if (! account_service_class_allows($account_id, 'total_identities', $r[0]['total'])) {
+		$ret['message'] .= upgrade_message();
+		return $ret;
 	}
 
 	$ret['success'] = true;
+
 	return $ret;
 }
 
 
 /**
- * @function validate_channelname($name)
- *     Determine if the channel name is allowed when creating a new channel.
+ * @brief Determine if the channel name is allowed when creating a new channel.
+ *
  * This action is pluggable.
+ * We're currently only checking for an empty name or one that exceeds our
+ * storage limit (255 chars). 255 chars is probably going to create a mess on
+ * some pages.
+ * Plugins can set additional policies such as full name requirements, character
+ * sets, multi-byte length, etc.
  *
  * @param string $name
  *
  * @returns nil return if name is valid, or string describing the error state.
- *
- * We're currently only checking for an empty name or one that exceeds our storage limit (255 chars).
- * 255 chars is probably going to create a mess on some pages. 
- * Plugins can set additional policies such as full name requirements, character sets, multi-byte
- * length, etc. 
- *
  */
-
 function validate_channelname($name) {
 
-	if(! $name)
+	if (! $name)
 		return t('Empty name');
-	if(strlen($name) > 255)
+
+	if (strlen($name) > 255)
 		return t('Name too long');
+
 	$arr = array('name' => $name);
-	call_hooks('validate_channelname',$arr);
-	if(x($arr,'message'))
+	call_hooks('validate_channelname', $arr);
+
+	if (x($arr, 'message'))
 		return $arr['message'];
-	return;
 }
 
 
 /**
- * @function create_sys_channel()
- *     Create a system channel - which has no account attached
+ * @brief Create a system channel - which has no account attached.
  *
  */
-
 function create_sys_channel() {
-	if(get_sys_channel())
+	if (get_sys_channel())
 		return;
 
-    // Ensure that there is a host keypair.
+	// Ensure that there is a host keypair.
 
-    if((! get_config('system','pubkey')) && (! get_config('system','prvkey'))) {
+	if ((! get_config('system', 'pubkey')) && (! get_config('system', 'prvkey'))) {
 		require_once('include/crypto.php');
-        $hostkey = new_keypair(4096);
-        set_config('system','pubkey',$hostkey['pubkey']);
-        set_config('system','prvkey',$hostkey['prvkey']);
-    }
+		$hostkey = new_keypair(4096);
+		set_config('system', 'pubkey', $hostkey['pubkey']);
+		set_config('system', 'prvkey', $hostkey['prvkey']);
+	}
 
 	create_identity(array(
 		'account_id' => 'xxx',  // This will create an identity with an (integer) account_id of 0, but account_id is required
@@ -103,63 +104,79 @@ function create_sys_channel() {
 	));
 }
 
+
+/**
+ * @brief Returns the sys channel.
+ *
+ * @return array|boolean
+ */
 function get_sys_channel() {
 	$r = q("select * from channel left join xchan on channel_hash = xchan_hash where (channel_pageflags & %d)>0 limit 1",
 		intval(PAGE_SYSTEM)
 	);
-	if($r)
+
+	if ($r)
 		return $r[0];
+
 	return false;
 }
 
+
+/**
+ * @brief Checks if $channel_id is sys channel.
+ *
+ * @param int $channel_id
+ * @return boolean
+ */
 function is_sys_channel($channel_id) {
 	$r = q("select channel_pageflags from channel where channel_id = %d limit 1",
 		intval($channel_id)
 	);
-	if(($r) && ($r[0]['channel_pageflags'] & PAGE_SYSTEM))
+
+	if (($r) && ($r[0]['channel_pageflags'] & PAGE_SYSTEM))
 		return true;
+
 	return false;
 }
 
 
 /**
- * @channel_total()
- *   Return the total number of channels on this site. No filtering is performed except to check PAGE_REMOVED
+ * @brief Return the total number of channels on this site.
  *
- * @returns int 
- *   on error returns boolean false
+ * No filtering is performed except to check PAGE_REMOVED.
  *
+ * @returns int|booleean
+ *   on error returns boolean false
  */
-
 function channel_total() {
 	$r = q("select channel_id from channel where not ( channel_pageflags & %d )>0",
 		intval(PAGE_REMOVED)
 	);
 
-	if(is_array($r))
+	if (is_array($r))
 		return count($r);
+
 	return false;
 }
 
 
 /**
- * @function create_identity($arr)
- *     Create a new channel
- * Also creates the related xchan, hubloc, profile, and "self" abook records, and an 
- * empty "Friends" group/collection for the new channel
+ * @brief Create a new channel.
+ *
+ * Also creates the related xchan, hubloc, profile, and "self" abook records,
+ * and an empty "Friends" group/collection for the new channel.
  *
- * @param array $arr
- *       'name'       => full name of channel
- *       'nickname'   => "email/url-compliant" nickname
- *       'account_id' => account_id to attach with this channel
- *       [other identity fields as desired]
+ * @param array $arr assoziative array with:
+ *  * \e string \b name full name of channel
+ *  * \e string \b nickname "email/url-compliant" nickname
+ *  * \e int \b account_id to attach with this channel
+ *  * [other identity fields as desired]
  *
  * @returns array
  *     'success' => boolean true or false
  *     'message' => optional error text if success is false
  *     'channel' => if successful the created channel array
  */
- 
 function create_identity($arr) {
 
 	$a = get_app();
@@ -176,7 +193,6 @@ function create_identity($arr) {
 	// save this for auto_friending
 	$total_identities = $ret['total_identities'];
 
-
 	$nick = mb_strtolower(trim($arr['nickname']));
 	if(! $nick) {
 		$ret['message'] = t('Nickname is required.');
@@ -205,7 +221,6 @@ function create_identity($arr) {
 	$guid = zot_new_uid($nick);
 	$key = new_keypair(4096);
 
-
 	$sig = base64url_encode(rsa_sign($guid,$key['prvkey']));
 	$hash = make_xchan_hash($guid,$sig);
 
@@ -221,9 +236,6 @@ function create_identity($arr) {
 	if(array_key_exists('primary', $arr))
 		$primary = intval($arr['primary']);
 
-
-	$perms_sql = '';
-
 	$role_permissions = null;
 	$global_perms = get_perms();
 
@@ -269,7 +281,6 @@ function create_identity($arr) {
 		intval($expire),
 		dbesc($a->timezone)
 	);
-			
 
 	$r = q("select * from channel where channel_account_id = %d 
 		and channel_guid = '%s' limit 1",
@@ -281,7 +292,7 @@ function create_identity($arr) {
 		$ret['message'] = t('Unable to retrieve created identity');
 		return $ret;
 	}
-	
+
 	$ret['channel'] = $r[0];
 
 	if(intval($arr['account_id']))
@@ -307,7 +318,6 @@ function create_identity($arr) {
 	if(! $r)
 		logger('create_identity: Unable to store hub location');
 
-
 	$newuid = $ret['channel']['channel_id'];
 
 	$r = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_l, xchan_photo_m, xchan_photo_s, xchan_addr, xchan_url, xchan_follow, xchan_connurl, xchan_name, xchan_network, xchan_photo_date, xchan_name_date, xchan_flags ) values ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
@@ -329,9 +339,8 @@ function create_identity($arr) {
 		intval($xchanflags)
 	);
 
-	// Not checking return value. 
+	// Not checking return value.
 	// It's ok for this to fail if it's an imported channel, and therefore the hash is a duplicate
-		
 
 	$r = q("INSERT INTO profile ( aid, uid, profile_guid, profile_name, is_default, publish, name, photo, thumb)
 		VALUES ( %d, %d, '%s', '%s', %d, %d, '%s', '%s', '%s') ",
@@ -418,37 +427,31 @@ function create_identity($arr) {
 		}
 
 		call_hooks('register_account', $newuid);
-	
+
 		proc_run('php','include/directory.php', $ret['channel']['channel_id']);
 	}
 
 	$ret['success'] = true;
 	return $ret;
-
 }
 
-
 /**
- * @function set_default_login_identity($account_id, $channel_id, $force = true)
- *       Set default channel to be used on login
+ * @brief Set default channel to be used on login.
  *
  * @param int $account_id
  *       login account
  * @param int $channel_id
  *       channel id to set as default for this account
- * @param boolean force
+ * @param boolean $force
  *       if true, set this default unconditionally
  *       if $force is false only do this if there is no existing default
- * 
- * @returns nil
  */
-
-function set_default_login_identity($account_id,$channel_id,$force = true) {
+function set_default_login_identity($account_id, $channel_id, $force = true) {
 	$r = q("select account_default_channel from account where account_id = %d limit 1",
 		intval($account_id)
 	);
-	if($r) {
-		if((intval($r[0]['account_default_channel']) == 0) || ($force)) {
+	if ($r) {
+		if ((intval($r[0]['account_default_channel']) == 0) || ($force)) {
 			$r = q("update account set account_default_channel = %d where account_id = %d",
 				intval($channel_id),
 				intval($account_id)
@@ -458,8 +461,7 @@ function set_default_login_identity($account_id,$channel_id,$force = true) {
 }
 
 /**
- * @function identity_basic_export($channel_id,$items = false)
- *     Create an array representing the important channel information
+ * @brief Create an array representing the important channel information
  * which would be necessary to create a nomadic identity clone. This includes
  * most channel resources and connection information with the exception of content.
  *
@@ -470,9 +472,7 @@ function set_default_login_identity($account_id,$channel_id,$force = true) {
  *
  * @returns array
  *     See function for details
- *
  */
-
 function identity_basic_export($channel_id, $items = false) {
 
 	/*
@@ -536,7 +536,6 @@ function identity_basic_export($channel_id, $items = false) {
 	if($r)
 		$ret['config'] = $r;
 
-
 	$r = q("select type, data from photo where scale = 4 and profile = 1 and uid = %d limit 1",
 		intval($channel_id)
 	);
@@ -563,11 +562,9 @@ function identity_basic_export($channel_id, $items = false) {
 	if($r)
 		$ret['obj'] = $r;
 
-
 	if(! $items)
 		return $ret;
 
-
 	$r = q("select likes.*, item.mid from likes left join item on likes.iid = item.id where likes.channel_id = %d",
 		intval($channel_id)
 	);
@@ -575,17 +572,16 @@ function identity_basic_export($channel_id, $items = false) {
 	if($r)
 		$ret['likes'] = $r;
 
-
 	$r = q("select item_id.*, item.mid from item_id left join item on item_id.iid = item.id where item_id.uid = %d",
 		intval($channel_id)
 	);
-	
+
 	if($r)
-		$ret['item_id'] = $r;	
+		$ret['item_id'] = $r;
 
-	$key = get_config('system','prvkey');
+	//$key = get_config('system','prvkey');
 
-	// warning: this may run into memory limits on smaller systems
+	/** @warning this may run into memory limits on smaller systems */
 
 	$r = q("select * from item where (item_flags & %d)>0 and not (item_restrict & %d)>0 and uid = %d",
 		intval(ITEM_WALL),
@@ -598,25 +594,17 @@ function identity_basic_export($channel_id, $items = false) {
 		$r = fetch_post_tags($r,true);
 		foreach($r as $rr)
 			$ret['item'][] = encode_item($rr,true);
-
 	}
-	return $ret;
 
+	return $ret;
 }
 
 
-
 /**
+ * @brief Loads a profile into the App structure.
  *
- * @function : profile_load(&$a, $nickname, $profile)
- *     Generate
- * @param App $a
- * @param string $nickname
- * @param string $profile
- *
- * Summary: Loads a profile into the App structure.
- * The function requires a writeable copy of the main App structure, and the nickname
- * of a valid channel.
+ * The function requires a writeable copy of the main App structure, and the
+ * nickname of a valid channel.
  *
  * Permissions of the current observer are checked. If a restricted profile is available
  * to the current observer, that will be loaded instead of the channel default profile.
@@ -625,9 +613,10 @@ function identity_basic_export($channel_id, $items = false) {
  *
  * The channel default theme is also selected for use, unless over-riden elsewhere.
  *
+ * @param[in,out] App &$a
+ * @param string $nickname
+ * @param string $profile
  */
-
-
 function profile_load(&$a, $nickname, $profile = '') {
 
 	logger('profile_load: ' . $nickname . (($profile) ? ' profile: ' . $profile : ''));
@@ -635,7 +624,7 @@ function profile_load(&$a, $nickname, $profile = '') {
 	$user = q("select channel_id from channel where channel_address = '%s' limit 1",
 		dbesc($nickname)
 	);
-		
+
 	if(! $user) {
 		logger('profile error: ' . $a->query_string, LOGGER_DEBUG);
 		notice( t('Requested channel is not available.') . EOL );
@@ -683,7 +672,6 @@ function profile_load(&$a, $nickname, $profile = '') {
 		);
 	}
 
-
 	if(! $p) {
 		logger('profile error: ' . $a->query_string, LOGGER_DEBUG);
 		notice( t('Requested profile is not available.') . EOL );
@@ -729,10 +717,11 @@ function profile_load(&$a, $nickname, $profile = '') {
 		$p[0]['picdate'] = $z[0]['xchan_photo_date'];
 		$p[0]['reddress'] = str_replace('@','&#xff20;',$z[0]['xchan_addr']);
 	}
-	
+
 	// fetch user tags if this isn't the default profile
 
 	if(! $p[0]['is_default']) {
+		/** @BUG $profile_uid is undefinded for this query, so should not work. */
 		$x = q("select `keywords` from `profile` where uid = %d and `is_default` = 1 limit 1",
 				intval($profile_uid)
 		);
@@ -744,7 +733,6 @@ function profile_load(&$a, $nickname, $profile = '') {
 		$keywords = str_replace(array('#',',',' ',',,'),array('',' ',',',','),$p[0]['keywords']);
 		if(strlen($keywords) && $can_view_profile)
 			$a->page['htmlhead'] .= '<meta name="keywords" content="' . htmlentities($keywords,ENT_COMPAT,'UTF-8') . '" />' . "\r\n" ;
-
 	}
 
 	$a->profile = $p[0];
@@ -756,7 +744,6 @@ function profile_load(&$a, $nickname, $profile = '') {
 	if($can_view_profile) {
 		$online = get_online_status($nickname);
 		$a->profile['online_status'] = $online['result'];
-
 	}
 
 	if(local_channel()) {
@@ -764,7 +751,7 @@ function profile_load(&$a, $nickname, $profile = '') {
 		$_SESSION['mobile_theme'] = $a->profile['channel_mobile_theme'];
 	}
 
-	/**
+	/*
 	 * load/reload current theme info
 	 */
 
@@ -776,36 +763,34 @@ function profile_load(&$a, $nickname, $profile = '') {
 //	if (file_exists($theme_info_file)){
 //		require_once($theme_info_file);
 //	}
-
-	return;
 }
 
-function profile_create_sidebar(&$a,$connect = true) {
+/**
+ * @brief
+ *
+ * @param App &$a
+ * @param boolean $connect
+ */
+function profile_create_sidebar(&$a, $connect = true) {
 
-	$block = (((get_config('system','block_public')) && (! local_channel()) && (! remote_channel())) ? true : false);
+	$block = (((get_config('system', 'block_public')) && (! local_channel()) && (! remote_channel())) ? true : false);
 
-	$a->set_widget('profile',profile_sidebar($a->profile, $block, $connect));
-	return;
+	$a->set_widget('profile', profile_sidebar($a->profile, $block, $connect));
 }
 
-
 /**
+ * @brief Formats a profile for display in the sidebar.
  *
- * Function: profile_sidebar
- *
- * Formats a profile for display in the sidebar.
  * It is very difficult to templatise the HTML completely
  * because of all the conditional logic.
  *
- * @parameter: array $profile
+ * @param array $profile
+ * @param int $block
+ * @param boolean $show_connect
  *
- * Returns HTML string stuitable for sidebar inclusion
+ * @return HTML string suitable for sidebar inclusion
  * Exceptions: Returns empty string if passed $profile is wrong type or not populated
- *
  */
-
-
-
 function profile_sidebar($profile, $block = 0, $show_connect = true) {
 
 	$a = get_app();
@@ -814,14 +799,12 @@ function profile_sidebar($profile, $block = 0, $show_connect = true) {
 
 	$o = '';
 	$location = false;
-	$address = false;
 	$pdesc = true;
 	$reddress = true;
 
 	if((! is_array($profile)) && (! count($profile)))
 		return $o;
 
-
 	head_set_icon($profile['thumb']);
 
 	$is_owner = (($profile['uid'] == local_channel()) ? true : false);
@@ -849,13 +832,11 @@ function profile_sidebar($profile, $block = 0, $show_connect = true) {
 
 	// show edit profile to yourself
 	if($is_owner) {
-
 		$profile['menu'] = array(
 			'chg_photo' => t('Change profile photo'),
 			'entries' => array(),
 		);
 
-
 		$multi_profiles = feature_enabled(local_channel(), 'multi_profiles');
 		if($multi_profiles) {
 			$profile['edit'] = array($a->get_baseurl(). '/profiles', t('Profiles'),"", t('Manage/edit profiles'));
@@ -863,10 +844,9 @@ function profile_sidebar($profile, $block = 0, $show_connect = true) {
 		}
 		else
 			$profile['edit'] = array($a->get_baseurl() . '/profiles/' . $profile['id'], t('Edit Profile'),'',t('Edit Profile'));
-						
+
 		$r = q("SELECT * FROM `profile` WHERE `uid` = %d",
 				local_channel());
-		
 
 		if($r) {
 			foreach($r as $rr) {
@@ -899,21 +879,21 @@ function profile_sidebar($profile, $block = 0, $show_connect = true) {
 	$marital  = ((x($profile,'marital')  == 1) ? t('Status:')   : False);
 	$homepage = ((x($profile,'homepage') == 1) ? t('Homepage:') : False);
 	$profile['online']   = (($profile['online_status'] === 'online') ? t('Online Now') : False);
-logger('online: ' . $profile['online']);
+	logger('online: ' . $profile['online']);
 
 	if(! perm_is_allowed($profile['uid'],((is_array($observer)) ? $observer['xchan_hash'] : ''),'view_profile')) {
 		$block = true;
 	}
 
 	if(($profile['hidewall'] && (! local_channel()) && (! remote_channel())) || $block ) {
-		$location = $reddress = $pdesc = $gender = $marital = $homepage = $online = False;
+		$location = $reddress = $pdesc = $gender = $marital = $homepage = False;
 	}
 
 	$firstname = ((strpos($profile['channel_name'],' '))
 		? trim(substr($profile['channel_name'],0,strpos($profile['channel_name'],' '))) : $profile['channel_name']);
 	$lastname = (($firstname === $profile['channel_name']) ? '' : trim(substr($profile['channel_name'],strlen($firstname))));
 
-    $diaspora = array(
+	$diaspora = array(
 		'podloc'     => z_root(),
 		'searchable' => (($block) ? 'false' : 'true'),
 		'nickname'   => $profile['channel_address'],
@@ -970,9 +950,9 @@ logger('online: ' . $profile['online']);
 }
 
 
-// FIXME or remove
-
-
+/**
+ * @FIXME or remove
+ */
 	function get_birthdays() {
 
 		$a = get_app();
@@ -1030,7 +1010,6 @@ logger('online: ' . $profile['online']);
 					$rr['date'] = day_translate(datetime_convert('UTC', $a->timezone, $rr['start'], $rr['adjust'] ? $bd_format : $bd_short)) . (($today) ?  ' ' . t('[today]') : '');
 					$rr['startime'] = Null;
 					$rr['today'] = $today;
-	
 				}
 			}
 		}
@@ -1044,14 +1023,13 @@ logger('online: ' . $profile['online']);
 			'$events' => $r,
 			'$lbr' => '{',  // raw brackets mess up if/endif macro processing
 			'$rbr' => '}'
-
 		));
 	}
 
 
-// FIXME
-
-
+/**
+ * @FIXME
+ */
 	function get_events() {
 
 		require_once('include/bbcode.php');
@@ -1085,7 +1063,6 @@ logger('online: ' . $profile['online']);
 			}
 			$classtoday = (($istoday) ? 'event-today' : '');
 
-
 			foreach($r as &$rr) {
 				if($rr['adjust'])
 					$md = datetime_convert('UTC',$a->timezone,$rr['start'],'Y/m');
@@ -1132,19 +1109,19 @@ function advanced_profile(&$a) {
 	if($a->profile['name']) {
 
 		$tpl = get_markup_template('profile_advanced.tpl');
-		
+
 		$profile = array();
-		
+
 		$profile['fullname'] = array( t('Full Name:'), $a->profile['name'] ) ;
-		
+
 		if($a->profile['gender']) $profile['gender'] = array( t('Gender:'),  $a->profile['gender'] );
-		
+
 		$ob_hash = get_observer_hash();
 		if($ob_hash && perm_is_allowed($a->profile['profile_uid'],$ob_hash,'post_like')) {
 			$profile['canlike'] = true;
 			$profile['likethis'] = t('Like this channel');
 			$profile['profile_guid'] = $a->profile['profile_guid'];
-		} 
+		}
 
 		$likers = q("select liker, xchan.*  from likes left join xchan on liker = xchan_hash where channel_id = %d and target_type = '%s' and verb = '%s'",
 			intval($a->profile['profile_uid']),
@@ -1175,19 +1152,19 @@ function advanced_profile(&$a) {
 					: day_translate(datetime_convert('UTC','UTC','2001-' . substr($a->profile['dob'],5) . ' 00:00 +00:00',$short_bd_format)));
 			}
 			$profile['birthday'] = array( t('Birthday:'), $val);
-
 		}
 
-		if($age = age($a->profile['dob'],$a->profile['timezone'],''))  $profile['age'] = array( t('Age:'), $age );
-			
-
-		if($a->profile['marital']) $profile['marital'] = array( t('Status:'), $a->profile['marital']);
+		if($age = age($a->profile['dob'],$a->profile['timezone'],''))
+			$profile['age'] = array( t('Age:'), $age );
 
+		if($a->profile['marital'])
+			$profile['marital'] = array( t('Status:'), $a->profile['marital']);
 
-		if($a->profile['with']) $profile['marital']['with'] = bbcode($a->profile['with']);
+		if($a->profile['with'])
+			$profile['marital']['with'] = bbcode($a->profile['with']);
 
 		if(strlen($a->profile['howlong']) && $a->profile['howlong'] !== NULL_DATE) {
-				$profile['howlong'] = relative_date($a->profile['howlong'], t('for %1$d %2$s'));
+			$profile['howlong'] = relative_date($a->profile['howlong'], t('for %1$d %2$s'));
 		}
 
 		if($a->profile['sexual']) $profile['sexual'] = array( t('Sexual Preference:'), $a->profile['sexual'] );
@@ -1243,54 +1220,55 @@ function advanced_profile(&$a) {
 
 //		logger('mod_profile: things: ' . print_r($things,true), LOGGER_DATA); 
 
-        return replace_macros($tpl, array(
-            '$title' => t('Profile'),
+		return replace_macros($tpl, array(
+			'$title' => t('Profile'),
 			'$canlike' => (($profile['canlike'])? true : false),
 			'$likethis' => t('Like this thing'),
-            '$profile' => $profile,
+			'$profile' => $profile,
 			'$things' => $things
-        ));
-    }
+		));
+	}
 
 	return '';
 }
 
 
-
-
 function get_my_url() {
-	if(x($_SESSION,'zrl_override'))
+	if(x($_SESSION, 'zrl_override'))
 		return $_SESSION['zrl_override'];
-	if(x($_SESSION,'my_url'))
+	if(x($_SESSION, 'my_url'))
 		return $_SESSION['my_url'];
+
 	return false;
 }
 
 function get_my_address() {
-	if(x($_SESSION,'zid_override'))
+	if(x($_SESSION, 'zid_override'))
 		return $_SESSION['zid_override'];
-	if(x($_SESSION,'my_address'))
+	if(x($_SESSION, 'my_address'))
 		return $_SESSION['my_address'];
+
 	return false;
 }
 
 /**
- * @function zid_init(&$a)
- *   If somebody arrives at our site using a zid, add their xchan to our DB if we don't have it already.
- *   And if they aren't already authenticated here, attempt reverse magic auth.
+ * @brief
+ *
+ * If somebody arrives at our site using a zid, add their xchan to our DB if we don't have it already.
+ * And if they aren't already authenticated here, attempt reverse magic auth.
+ *
+ * @param App &$a
  *
  * @hooks 'zid_init'
  *      string 'zid' - their zid
  *      string 'url' - the destination url
- *
  */
-
 function zid_init(&$a) {
 	$tmp_str = get_my_address();
 	if(validate_email($tmp_str)) {
 		proc_run('php','include/gprobe.php',bin2hex($tmp_str));
 		$arr = array('zid' => $tmp_str, 'url' => $a->cmd);
-		call_hooks('zid_init',$arr);		
+		call_hooks('zid_init',$arr);
 		if(! local_channel()) {
 			$r = q("select * from hubloc where hubloc_addr = '%s' order by hubloc_connected desc limit 1",
 				dbesc($tmp_str)
@@ -1312,8 +1290,8 @@ function zid_init(&$a) {
 }
 
 /**
- * @function zid($s,$address = '')
- *   Adds a zid parameter to a url
+ * @brief Adds a zid parameter to a url.
+ *
  * @param string $s
  *   The url to accept the zid
  * @param boolean $address
@@ -1325,31 +1303,33 @@ function zid_init(&$a) {
  *      string zid - urlencoded zid
  *      string result - the return string we calculated, change it if you want to return something else
  */
-
-
 function zid($s,$address = '') {
-	if(! strlen($s) || strpos($s,'zid='))
+	if (! strlen($s) || strpos($s,'zid='))
 		return $s;
+
 	$has_params = ((strpos($s,'?')) ? true : false);
-	$num_slashes = substr_count($s,'/');
-	if(! $has_params)
-		$has_params = ((strpos($s,'&')) ? true : false);
+	$num_slashes = substr_count($s, '/');
+	if (! $has_params)
+		$has_params = ((strpos($s, '&')) ? true : false);
+
 	$achar = strpos($s,'?') ? '&' : '?';
 
 	$mine = get_my_url();
 	$myaddr = (($address) ? $address : get_my_address());
 
-	// FIXME checking against our own channel url is no longer reliable. We may have a lot
-	// of urls attached to out channel. Should probably match against our site, since we
-	// will not need to remote authenticate on our own site anyway.
+	/** @FIXME checking against our own channel url is no longer reliable. We may have a lot
+	 * of urls attached to out channel. Should probably match against our site, since we
+	 * will not need to remote authenticate on our own site anyway.
+	 */
 
-	if($mine && $myaddr && (! link_compare($mine,$s)))
+	if ($mine && $myaddr && (! link_compare($mine,$s)))
 		$zurl = $s . (($num_slashes >= 3) ? '' : '/') . $achar . 'zid=' . urlencode($myaddr);
 	else
 		$zurl = $s;
 
 	$arr = array('url' => $s, 'zid' => urlencode($myaddr), 'result' => $zurl);
 	call_hooks('zid', $arr);
+
 	return $arr['result'];
 }
 
@@ -1369,55 +1349,45 @@ function get_theme_uid() {
 		$x = get_sys_channel();
 		if($x)
 			return $x['channel_id'];
-	}	
+	}
+
 	return $uid;
 }
 
 /**
-* @function get_default_profile_photo($size = 175)
-* 	Retrieves the path of the default_profile_photo for this system
-* 	with the specified size.
+* @brief Retrieves the path of the default_profile_photo for this system
+* with the specified size.
+*
 * @param int $size
-* 	one of (175, 80, 48)
+*  one of (175, 80, 48)
 * @returns string
-*
 */
-
 function get_default_profile_photo($size = 175) {
-		$scheme = get_config('system','default_profile_photo');
-		if(! $scheme)
-			$scheme = 'rainbow_man';
-		return 'images/default_profile_photos/' . $scheme . '/' . $size . '.png';
-}
+	$scheme = get_config('system','default_profile_photo');
+	if(! $scheme)
+		$scheme = 'rainbow_man';
 
+	return 'images/default_profile_photos/' . $scheme . '/' . $size . '.png';
+}
 
 /**
+ * @brief Test whether a given identity is NOT a member of the Red Matrix.
  *
- * @function is_foreigner($s)
- *    Test whether a given identity is NOT a member of the Red Matrix
  * @param string $s;
  *    xchan_hash of the identity in question
- *
  * @returns boolean true or false
- *
  */
-
 function is_foreigner($s) {
-	return((strpbrk($s,'.:@')) ? true : false);
+	return((strpbrk($s, '.:@')) ? true : false);
 }
 
-
 /**
+ * @brief Test whether a given identity is a member of the Red Matrix.
  *
- * @function is_member($s)
- *    Test whether a given identity is a member of the Red Matrix
  * @param string $s;
  *    xchan_hash of the identity in question
- *
  * @returns boolean true or false
- *
  */
-
 function is_member($s) {
 	return((is_foreigner($s)) ? false : true);
 }
@@ -1464,8 +1434,8 @@ function remote_online_status($webbie) {
 		if($j)
 			$result = (($j['result']) ? $j['result'] : false);
 	}
-	return $result;
 
+	return $result;
 }
 
 
@@ -1477,17 +1447,20 @@ function get_channel_by_nick($nick) {
 
 }
 
-
+/**
+ * @brief
+ *
+ * @return string
+ */
 function identity_selector() {
-	if(local_channel()) {
+	if (local_channel()) {
 		$r = q("select channel.*, xchan.* from channel left join xchan on channel.channel_hash = xchan.xchan_hash where channel.channel_account_id = %d and (channel_pageflags & %d) = 0 order by channel_name ",
 			intval(get_account_id()),
 			intval(PAGE_REMOVED)
 		);
-		if(count($r) > 1) {
-			$selected_channel = null;
-			$account = get_app()->get_account();
-			$o = replace_macros(get_markup_template('channel_id_select.tpl'),array(
+		if (count($r) > 1) {
+			//$account = get_app()->get_account();
+			$o = replace_macros(get_markup_template('channel_id_select.tpl'), array(
 				'$channels' => $r,
 				'$selected' => local_channel()
 			));
@@ -1507,6 +1480,7 @@ function is_public_profile() {
 	$channel = get_app()->get_channel();
 	if($channel && $channel['channel_r_profile'] == PERMS_PUBLIC)
 		return true;
+
 	return false;
 }
 
@@ -1522,7 +1496,6 @@ function get_profile_fields_basic($filter = 0) {
 			$x[$f] = 1;
 
 	return $x;
-
 }
 
 
@@ -1536,6 +1509,7 @@ function get_profile_fields_advanced($filter = 0) {
 	if($basic)
 		foreach($basic as $f => $v)
 			$x[$f] = $v;
+
 	if($profile_fields_advanced)
 		foreach($profile_fields_advanced as $f)
 			$x[$f] = 1;
@@ -1544,28 +1518,26 @@ function get_profile_fields_advanced($filter = 0) {
 }
 
 /**
- * @function notifications_off($channel_id)
- *    Clear notifyflags for a channel - most likely during bulk import of content or other activity that is likely
- *    to generate huge amounts of undesired notifications.
+ * @brief Clear notifyflags for a channel.
+ *
+ * Most likely during bulk import of content or other activity that is likely
+ * to generate huge amounts of undesired notifications.
+ *
  * @param int $channel_id
  *    The channel to disable notifications for
  * @returns int
  *    Current notification flag value. Send this to notifications_on() to restore the channel settings when finished
  *    with the activity requiring notifications_off(); 
  */
-
-
-
 function notifications_off($channel_id) {
 	$r = q("select channel_notifyflags from channel where channel_id = %d limit 1",
 		intval($channel_id)
 	);
-	$x = q("update channel set channel_notifyflags = 0 where channel_id = %d",
+	q("update channel set channel_notifyflags = 0 where channel_id = %d",
 		intval($channel_id)
 	);
 
 	return intval($r[0]['channel_notifyflags']);
-
 }
 
 
@@ -1586,5 +1558,6 @@ function get_channel_default_perms($uid) {
 	);
 	if($r)
 		return $r[0]['abook_my_perms'];
+
 	return 0;
 }
diff --git a/include/items.php b/include/items.php
index ef269b9c4..4b83ce3e3 100755
--- a/include/items.php
+++ b/include/items.php
@@ -1,4 +1,7 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/items.php
+ */
 
 require_once('include/bbcode.php');
 require_once('include/oembed.php');
@@ -6,8 +9,14 @@ require_once('include/crypto.php');
 require_once('include/photo/photo_driver.php');
 require_once('include/permissions.php');
 
-
-function collect_recipients($item,&$private_envelope) {
+/**
+ * @brief Collects recipients.
+ *
+ * @param array $item
+ * @param[out] boolean $private_envelope
+ * @return array containing the recipients
+ */
+function collect_recipients($item, &$private_envelope) {
 
 	require_once('include/group.php');
 
@@ -67,7 +76,7 @@ function collect_recipients($item,&$private_envelope) {
 
 		$private_envelope = false;
 		require_once('include/identity.php');
-		$sys = get_sys_channel();
+		//$sys = get_sys_channel();
 
 		if(array_key_exists('public_policy',$item) && $item['public_policy'] !== 'self') {
 			$r = q("select abook_xchan, xchan_network from abook left join xchan on abook_xchan = xchan_hash where abook_channel = %d and not (abook_flags & %d)>0 ",
@@ -84,7 +93,7 @@ function collect_recipients($item,&$private_envelope) {
 					switch($policy) {
 						case 'net':
 						case 'aut':
-						case 'sit':		
+						case 'sit':
 						case 'any':
 						case 'con':
 							if($rr['xchan_network'] != 'zot')
@@ -103,7 +112,6 @@ function collect_recipients($item,&$private_envelope) {
 		}
 	}
 
-
 	// This is a somewhat expensive operation but important.
 	// Don't send this item to anybody who isn't allowed to see it
 
@@ -129,7 +137,6 @@ function collect_recipients($item,&$private_envelope) {
 		$recipients[] = $item['owner_xchan'];
 
 	return $recipients;
-
 }
 
 /**
@@ -139,30 +146,35 @@ function collect_recipients($item,&$private_envelope) {
  * They can still be addressed individually.
  * Networks may need to be added or removed from this list as circumstances change.
  *
- * Update: this may need to be the default, which will force people to opt-in to sending stuff
- * privately to insecure platforms. 
+ * Update: this may need to be the default, which will force people to opt-in to
+ * sending stuff privately to insecure platforms.
+ *
+ * @param int $channel_id
+ * @param array $arr
+ * @return array containing the sane xchan_hashes
  */
-
-function filter_insecure($channel_id,$arr) {
+function filter_insecure($channel_id, $arr) {
 	$insecure_nets = " and not xchan_network in ('diaspora', 'friendica-over-diaspora') ";
 
 	$ret = array();
 
-	if((! intval(get_config($channel_id,'system','filter_insecure_collections'))) || (! $arr))
+	if((! intval(get_config($channel_id, 'system', 'filter_insecure_collections'))) || (! $arr))
 		return $arr;
 
 	$str = '';
 	foreach($arr as $rr) {
 		if(strlen($str))
 			$str .= ',';
+
 		$str .= "'" . dbesc($rr) . "'";
 	}
-	$r = q("select xchan_hash from xchan where xchan_hash in ($str) $insecure_nets ");
+	$r = q("select xchan_hash from xchan where xchan_hash in ($str) $insecure_nets");
 	if($r) {
 		foreach($r as $rr) {
 			$ret[] = $rr['xchan_hash'];
 		}
 	}
+
 	return $ret;
 }
 
@@ -173,12 +185,13 @@ function comments_are_now_closed($item) {
 		if($d > $item['comments_closed'])
 			return true;
 	}
+
 	return false;
 }
 
 
 /**
- * @function can_comment_on_post($observer_xchan,$item);
+ * @brief
  *
  * This function examines the comment_policy attached to an item and decides if the current observer has
  * sufficient privileges to comment. This will normally be called on a remote site where perm_is_allowed()
@@ -187,16 +200,18 @@ function comments_are_now_closed($item) {
  * If it is, you should be able to use perm_is_allowed( ... 'post_comments'), and if it isn't you need to call 
  * can_comment_on_post()
  * We also check the comments_closed date/time on the item if this is set. 
+ *
+ * @param string $observer_xchan
+ * @param array $item
+ * @return boolean
  */
-
-function can_comment_on_post($observer_xchan,$item) {
+function can_comment_on_post($observer_xchan, $item) {
 
 //	logger('can_comment_on_post: comment_policy: ' . $item['comment_policy'], LOGGER_DEBUG);
 
 	if(! $observer_xchan)
 		return false;
 
-
 	if($item['comment_policy'] === 'none')
 		return false;
 
@@ -205,6 +220,7 @@ function can_comment_on_post($observer_xchan,$item) {
 
 	if($observer_xchan === $item['author_xchan'] || $observer_xchan === $item['owner_xchan'])
 		return true;
+
 	switch($item['comment_policy']) {
 		case 'self':
 			if($observer_xchan === $item['author_xchan'] || $observer_xchan === $item['owner_xchan'])
@@ -233,36 +249,36 @@ function can_comment_on_post($observer_xchan,$item) {
 		return true;
 	if(strstr($item['comment_policy'],'site:') && strstr($item['comment_policy'],get_app()->get_hostname()))
 		return true;
-	
+
 	return false;
 }
 
 /**
- * @function add_source_route($iid,$hash)
- *    Adds $hash to the item source route specified by $iid
- * @param integer $iid 
- *    item['id'] of target item
- * @param string $hash
- *    xchan_hash of the channel that sent the item
- * Modifies item pointed to by $iid
+ * @brief Adds $hash to the item source route specified by $iid.
  *
  * $item['route'] contains a comma-separated list of xchans that sent the current message, 
  * somewhat analogous to the * Received: header line in email. We can use this to perform
  * loop detection and to avoid sending a particular item to any "upstream" sender (they 
- * already have a copy because they sent it to us).  
+ * already have a copy because they sent it to us).
+ *
+ * Modifies item in the database pointed to by $iid.
  *
+ * @param integer $iid
+ *    item['id'] of target item
+ * @param string $hash
+ *    xchan_hash of the channel that sent the item
  */
-
-function add_source_route($iid,$hash) {
+function add_source_route($iid, $hash) {
 //	logger('add_source_route ' . $iid . ' ' . $hash, LOGGER_DEBUG);
 
 	if((! $iid) || (! $hash))
 		return;
+
 	$r = q("select route from item where id = %d limit 1",
 		intval($iid)
 	);
 	if($r) {
-		$new_route = (($r[0]['route']) ? $r[0]['route'] . ',' : '') . $hash; 
+		$new_route = (($r[0]['route']) ? $r[0]['route'] . ',' : '') . $hash;
 		q("update item set route = '%s' where id = %d",
 			(dbesc($new_route)),
 			intval($iid)
@@ -271,17 +287,17 @@ function add_source_route($iid,$hash) {
 }
 
 
-
 /**
- * @function red_zrl_callback
- *   preg_match function when fixing 'naked' links in mod item.php
- *   Check if we've got a hubloc for the site and use a zrl if we do, a url if we don't. 
- *   Remove any existing zid= param which may have been pasted by mistake - and will have
- *   the author's credentials. zid's are dynamic and can't really be passed around like
- *   that.
+ * @brief preg_match function when fixing 'naked' links in mod item.php.
+ *
+ * Check if we've got a hubloc for the site and use a zrl if we do, a url if we don't.
+ * Remove any existing zid= param which may have been pasted by mistake - and will have
+ * the author's credentials. zid's are dynamic and can't really be passed around like
+ * that.
+ *
+ * @param array $matches
+ * @return string
  */
-
-
 function red_zrl_callback($matches) {
 	require_once('include/hubloc.php');
 	$zrl = is_matrix_url($matches[2]);
@@ -296,19 +312,24 @@ function red_zrl_callback($matches) {
 		$matches[1] = '';
 	if($zrl)
 		return $matches[1] . '#^[zrl=' . $matches[2] . ']' . $matches[2] . '[/zrl]';
+
 	return $matches[1] . '#^[url=' . $matches[2] . ']' . $matches[2] . '[/url]';
 }
 
-
-// If we've got a url or zrl tag with a naked url somewhere in the link text, 
-// escape it with quotes unless the naked url is a linked photo. 
-
+/**
+ * If we've got a url or zrl tag with a naked url somewhere in the link text,
+ * escape it with quotes unless the naked url is a linked photo.
+ *
+ * @param array $matches
+ * @return string
+ */
 function red_escape_zrl_callback($matches) {
 
 	// Uncertain why the url/zrl forms weren't picked up by the non-greedy regex.
 
-	if((strpos($matches[3],'zmg') !== false) || (strpos($matches[3],'img') !== false) || (strpos($matches[3],'zrl') !== false) || (strpos($matches[3],'url') !== false))
+	if((strpos($matches[3], 'zmg') !== false) || (strpos($matches[3], 'img') !== false) || (strpos($matches[3],'zrl') !== false) || (strpos($matches[3],'url') !== false))
 		return $matches[0];
+
 	return '[' . $matches[1] . 'rl' . $matches[2] . ']' . $matches[3] . '"' . $matches[4] . '"' . $matches[5] . '[/' . $matches[6] . 'rl]';
 }
 
@@ -318,7 +339,6 @@ function red_escape_codeblock($m) {
 
 function red_unescape_codeblock($m) {
 	return '[' . $m[2] . base64_decode($m[1]) . '[/' . $m[2] . ']';
-	
 }
 
 
@@ -334,28 +354,23 @@ function red_zrlify_img_callback($matches) {
 
 	if($zrl)
 		return '[zmg' . $matches[1] . ']' . $matches[2] . '[/zmg]';
+
 	return $matches[0];
 }
 
 
-
-
 /**
- * @function post_activity_item($arr)
- *
- *     post an activity
- * 
- * @param array $arr
+ * @brief Post an activity.
  *
  * In its simplest form one needs only to set $arr['body'] to post a note to the logged in channel's wall.
  * Much more complex activities can be created. Permissions are checked. No filtering, tag expansion 
  * or other processing is performed.
  *
- * @returns array 
- *      'success' => true or false 
- *      'activity' => the resulting activity if successful
+ * @param array $arr
+ * @returns array
+ *  * \e boolean \b success true or false
+ *  * \e array \b activity the resulting activity if successful
  */
-
 function post_activity_item($arr) {
 
 	$ret = array('success' => false);
@@ -369,14 +384,13 @@ function post_activity_item($arr) {
 			$arr['item_flags'] = ITEM_ORIGIN;
 		else
 			$arr['item_flags'] = ITEM_ORIGIN | ITEM_WALL | ITEM_THREAD_TOP;
-	}	
-
+	}
 
 	$channel  = get_app()->get_channel();
 	$observer = get_app()->get_observer();
 
-	$arr['aid']          = 	((x($arr,'aid')) ? $arr['aid'] : $channel['channel_account_id']);
-	$arr['uid']          = 	((x($arr,'uid')) ? $arr['uid'] : $channel['channel_id']);
+	$arr['aid'] = ((x($arr,'aid')) ? $arr['aid'] : $channel['channel_account_id']);
+	$arr['uid'] = ((x($arr,'uid')) ? $arr['uid'] : $channel['channel_id']);
 
 	if(! perm_is_allowed($arr['uid'],$observer['xchan_hash'],(($is_comment) ? 'post_comments' : 'post_wall'))) {
 		$ret['message'] = t('Permission denied');
@@ -410,19 +424,18 @@ function post_activity_item($arr) {
 			$arr['body']  = json_encode(crypto_encapsulate($arr['body'],$key));
 	}
 
-	$arr['mid']          = 	((x($arr,'mid')) ? $arr['mid'] : item_message_id());
-	$arr['parent_mid']   =  ((x($arr,'parent_mid')) ? $arr['parent_mid'] : $arr['mid']);
-	$arr['thr_parent']   =  ((x($arr,'thr_parent')) ? $arr['thr_parent'] : $arr['mid']);
+	$arr['mid']          = ((x($arr,'mid')) ? $arr['mid'] : item_message_id());
+	$arr['parent_mid']   = ((x($arr,'parent_mid')) ? $arr['parent_mid'] : $arr['mid']);
+	$arr['thr_parent']   = ((x($arr,'thr_parent')) ? $arr['thr_parent'] : $arr['mid']);
 
-	$arr['owner_xchan']  = 	((x($arr,'owner_xchan'))  ? $arr['owner_xchan']  : $channel['channel_hash']);
-	$arr['author_xchan'] = 	((x($arr,'author_xchan')) ? $arr['author_xchan'] : $observer['xchan_hash']);
+	$arr['owner_xchan']  = ((x($arr,'owner_xchan'))  ? $arr['owner_xchan']  : $channel['channel_hash']);
+	$arr['author_xchan'] = ((x($arr,'author_xchan')) ? $arr['author_xchan'] : $observer['xchan_hash']);
 
-	$arr['verb']         = 	((x($arr,'verb')) ? $arr['verb'] : ACTIVITY_POST);
-	$arr['obj_type']     =  ((x($arr,'obj_type')) ? $arr['obj_type'] : ACTIVITY_OBJ_NOTE);
+	$arr['verb']         = ((x($arr,'verb')) ? $arr['verb'] : ACTIVITY_POST);
+	$arr['obj_type']     = ((x($arr,'obj_type')) ? $arr['obj_type'] : ACTIVITY_OBJ_NOTE);
 	if($is_comment)
 		$arr['obj_type'] = ACTIVITY_OBJ_COMMENT;
 
-
 	$arr['allow_cid']    = ((x($arr,'allow_cid')) ? $arr['allow_cid'] : $channel['channel_allow_cid']);
 	$arr['allow_gid']    = ((x($arr,'allow_gid')) ? $arr['allow_gid'] : $channel['channel_allow_gid']);
 	$arr['deny_cid']     = ((x($arr,'deny_cid')) ? $arr['deny_cid'] : $channel['channel_deny_cid']);
@@ -430,7 +443,6 @@ function post_activity_item($arr) {
 
 	$arr['comment_policy'] = map_scope($channel['channel_w_comment']); 
 
-
 	if ((! $arr['plink']) && ($arr['item_flags'] & ITEM_THREAD_TOP)) {
 		$arr['plink'] = z_root() . '/channel/' . $channel['channel_address'] . '/?f=&mid=' . $arr['mid'];
 	}
@@ -447,7 +459,6 @@ function post_activity_item($arr) {
 		return $ret;
 	}
 
-
 	$post = item_store($arr);	
 	if($post['success'])
 		$post_id = $post['item_id'];
@@ -465,15 +476,15 @@ function post_activity_item($arr) {
 	}
 
 	return $ret;
-
 }
 
 /**
- * @function get_public_feed($channel,$params)
- *     generate an Atom feed
+ * @brief Generate an Atom feed.
+ *
+ * @param array $channel
+ * @param array $params
  */
-
-function get_public_feed($channel,$params) {
+function get_public_feed($channel, $params) {
 
 	$type      = 'xml';
 	$begin     = NULL_DATE;
@@ -494,7 +505,7 @@ function get_public_feed($channel,$params) {
 	$params['direction'] = ((x($params,'direction')) ? $params['direction']     : 'desc');
 	$params['pages']     = ((x($params,'pages'))     ? intval($params['pages']) : 0);
 	$params['top']       = ((x($params,'top'))       ? intval($params['top'])   : 0);
-		
+
 	switch($params['type']) {
 		case 'json':
 			header("Content-type: application/atom+json");
@@ -505,24 +516,26 @@ function get_public_feed($channel,$params) {
 			break;
 	}
 
-	
-	return get_feed_for($channel,get_observer_hash(),$params);
+	return get_feed_for($channel, get_observer_hash(), $params);
 }
 
-
-
-
+/**
+ * @brief
+ *
+ * @param array $channel
+ * @param string $observer_hash
+ * @param array $params
+ * @return string
+ */
 function get_feed_for($channel, $observer_hash, $params) {
 
 	if(! channel)
 		http_status_exit(401);
 
-
 	if($params['pages']) {
 		if(! perm_is_allowed($channel['channel_id'],$observer_hash,'view_pages'))
 			http_status_exit(403);
-	}
-	else {
+	} else {
 		if(! perm_is_allowed($channel['channel_id'],$observer_hash,'view_stream'))
 			http_status_exit(403);
 	}
@@ -538,7 +551,6 @@ function get_feed_for($channel, $observer_hash, $params) {
 		'top'   => $params['top']
 		), $channel, $observer_hash, CLIENT_MODE_NORMAL, get_app()->module);
 
-
 	$feed_template = get_markup_template('atom_feed.tpl');
 
 	$atom = '';
@@ -571,7 +583,8 @@ function get_feed_for($channel, $observer_hash, $params) {
 			if($item['item_private'])
 				continue;
 
-			$atom .= atom_entry($item,$type,null,$owner,true);
+			/** @BUG $owner is undefined in this call */
+			$atom .= atom_entry($item, $type, null, $owner, true);
 		}
 	}
 
@@ -604,11 +617,11 @@ function construct_activity_object($item) {
 		if($r->title)
 			$o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 		if($r->links) {
-			// FIXME!!
+			/** @FIXME!! */
 			if(substr($r->link,0,1) === '<') {
 				$r->link = preg_replace('/\<link(.*?)\"\>/','<link$1"/>',$r->link);
 				$o .= $r->link;
-			}					
+			}
 			else
 				$o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 		}
@@ -635,7 +648,7 @@ function construct_activity_target($item) {
 		if($r->title)
 			$o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 		if($r->links) {
-			// FIXME !!!
+			/** @FIXME !!! */
 			if(substr($r->link,0,1) === '<') {
 				if(strstr($r->link,'&') && (! strstr($r->link,'&amp;')))
 					$r->link = str_replace('&','&amp;', $r->link);
@@ -654,12 +667,15 @@ function construct_activity_target($item) {
 	return '';
 }
 
-/* limit_body_size()
+/**
+ * @brief Limit lenght on imported system messages.
+ *
+ * The purpose of this function is to apply system message length limits to
+ * imported messages without including any embedded photos in the length.
  *
- *		The purpose of this function is to apply system message length limits to
- *		imported messages without including any embedded photos in the length
+ * @param string $body
+ * @return string|unknown
  */
-
 function limit_body_size($body) {
 
 	$maxlen = get_max_import_size();
@@ -671,7 +687,6 @@ function limit_body_size($body) {
 		$orig_body = $body;
 		$new_body = '';
 		$textlen = 0;
-		$max_found = false;
 
 		$img_start = strpos($orig_body, '[img');
 		$img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
@@ -700,7 +715,6 @@ function limit_body_size($body) {
 				$new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
 			}
 			else {
-
 				if( ($textlen + $img_end) > $maxlen ) {
 					if($textlen < $maxlen) {
 						$new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
@@ -836,12 +850,8 @@ function get_item_elements($x) {
 
 	$arr['item_flags'] = 0;
 
-
 	if(array_key_exists('flags',$x) && in_array('consensus',$x['flags']))
 		$arr['item_flags'] |= ITEM_CONSENSUS;
-
-
-
 	if(array_key_exists('flags',$x) && in_array('deleted',$x['flags']))
 		$arr['item_restrict'] |= ITEM_DELETED;
 	if(array_key_exists('flags',$x) && in_array('hidden',$x['flags']))
@@ -868,7 +878,6 @@ function get_item_elements($x) {
 			return array();
 	}
 
-
 	if($arr['sig']) {
 		$r = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1",
 			dbesc($arr['author_xchan'])
@@ -885,7 +894,6 @@ function get_item_elements($x) {
 	// and we need plaintext to do that. 
 
 
-
 	if(intval($arr['item_private'])) {
 		$arr['item_flags'] = $arr['item_flags'] | ITEM_OBSCURED;
 		if($arr['title'])
@@ -914,7 +922,6 @@ function get_item_elements($x) {
 	}
 
 	return $arr;
-
 }
 
 
@@ -998,7 +1005,6 @@ function import_author_rss($x) {
 	}
 
 	return false;
-	
 }
 
 function import_author_unknown($x) {
@@ -1043,7 +1049,6 @@ function import_author_unknown($x) {
 	}
 
 	return false;
-	
 }
 
 function encode_item($item,$mirror = false) {
@@ -1150,7 +1155,6 @@ function encode_item($item,$mirror = false) {
 	logger('encode_item: ' . print_r($x,true), LOGGER_DATA);
 
 	return $x;
-
 }
 
 
@@ -1174,7 +1178,7 @@ function map_scope($scope,$strip = false) {
 		default:
 			return 'contacts';
 	}
-}	
+}
 
 function translate_scope($scope) {
 	if(! $scope || $scope === 'public')
@@ -1269,12 +1273,16 @@ function decode_tags($t) {
 		}
 		return $ret;
 	}
-	return '';
 
+	return '';
 }
 
-// santise a potentially complex array
-
+/**
+ * @brief Santise a potentially complex array.
+ *
+ * @param array $arr
+ * @return array|string
+ */
 function activity_sanitise($arr) {
 	if($arr) {
 		if(is_array($arr)) {
@@ -1291,11 +1299,16 @@ function activity_sanitise($arr) {
 			return htmlspecialchars($arr, ENT_COMPAT,'UTF-8', false);
 		}
 	}
+
 	return '';
 }
 
-// sanitise a simple linear array
-
+/**
+ * @brief Sanitise a simple linear array.
+ *
+ * @param array $arr
+ * @return array|string
+ */
 function array_sanitise($arr) {
 	if($arr) {
 		$ret = array();
@@ -1304,6 +1317,7 @@ function array_sanitise($arr) {
 		}
 		return $ret;
 	}
+
 	return '';
 }
 
@@ -1326,7 +1340,7 @@ function encode_item_flags($item) {
 		$ret[] = 'consensus';
 	if($item['item_private'])
 		$ret[] = 'private';
-	
+
 	return $ret;
 }
 
@@ -1419,7 +1433,6 @@ function get_mail_elements($x) {
 		return array();
 
 	return $arr;
-
 }
 
 
@@ -1448,15 +1461,17 @@ function get_profile_elements($x) {
 	$arr['keywords']     = (($x['keywords'] && is_array($x['keywords'])) ? array_sanitise($x['keywords']) : array()); 
 
 	return $arr;
-
 }
 
+/**
+ * @param object $feed
+ * @param array $item
+ * @param[out] array $author
+ * @return multitype:multitype: string NULL number Ambigous <NULL, string, number> Ambigous <mixed, string> Ambigous <multitype:multitype:string Ambigous <NULL, string>  , multitype:multitype:string unknown  > multitype:NULL unknown
+ */
+function get_atom_elements($feed, $item, &$author) {
 
-
-function get_atom_elements($feed,$item,&$author) {
-
-
-	$best_photo = array();
+	//$best_photo = array();
 
 	$res = array();
 
@@ -1531,7 +1546,7 @@ function get_atom_elements($feed,$item,&$author) {
 		if($rawmedia && $rawmedia[0]['attribs']['']['url']) {
 			$author['author_photo'] = strip_tags(unxmlify($rawmedia[0]['attribs']['']['url']));
 		}
-	}		   
+	}
 
 
 	// No photo/profile-link on the item - look at the feed level
@@ -1573,9 +1588,9 @@ function get_atom_elements($feed,$item,&$author) {
 	$apps = $item->get_item_tags(NAMESPACE_STATUSNET,'notice_info');
 	if($apps && $apps[0]['attribs']['']['source']) {
 		$res['app'] = strip_tags(unxmlify($apps[0]['attribs']['']['source']));
-	}		   
+	}
 
-	/**
+	/*
 	 * If there's a copy of the body content which is guaranteed to have survived mangling in transit, use it.
 	 */
 
@@ -1593,10 +1608,8 @@ function get_atom_elements($feed,$item,&$author) {
 		// create a term table item for them. For now just make sure they stay as links.
 
 		$res['body'] = preg_replace('/\[bookmark(.*?)\](.*?)\[\/bookmark\]/','[url$1]$2[/url]',$res['body']);
-
 	}
 
-	
 	$res['body'] = limit_body_size($res['body']);
 
 	// It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust 
@@ -1620,8 +1633,6 @@ function get_atom_elements($feed,$item,&$author) {
 		$res['body'] = purify_html($res['body']);
 
 		$res['body'] = @html2bbcode($res['body']);
-
-
 	}
 	elseif(! $have_real_body) {
 
@@ -1652,7 +1663,6 @@ function get_atom_elements($feed,$item,&$author) {
 		);
 	}
 
-
 	$private = $item->get_item_tags(NAMESPACE_DFRN,'private');
 	if($private && intval($private[0]['data']) > 0)
 		$res['item_private'] = ((intval($private[0]['data'])) ? 1 : 0);
@@ -1663,12 +1673,10 @@ function get_atom_elements($feed,$item,&$author) {
 	if($rawlocation)
 		$res['location'] = unxmlify($rawlocation[0]['data']);
 
-
 	$rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 	if($rawcreated)
 		$res['created'] = unxmlify($rawcreated[0]['data']);
 
-
 	$rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 	if($rawedited)
 		$res['edited'] = unxmlify($rawedited[0]['data']);
@@ -1735,7 +1743,7 @@ function get_atom_elements($feed,$item,&$author) {
 	}
 
 	// translate OStatus unfollow to activity streams if it happened to get selected
-		
+
 	if((x($res,'verb')) && ($res['verb'] === 'http://ostatus.org/schema/1.0/unfollow'))
 		$res['verb'] = ACTIVITY_UNFOLLOW;
 
@@ -1765,7 +1773,7 @@ function get_atom_elements($feed,$item,&$author) {
 					'url'   => $termurl,
 					'term'  => $termterm,
 				);
-			}		
+			}
 		}
 	}
 
@@ -1790,6 +1798,7 @@ function get_atom_elements($feed,$item,&$author) {
 				$title = ' ';
 			if(! $type)
 				$type = 'application/octet-stream';
+
 			$res['attach'][] = array('href' => $link, 'length' => $len, 'type' => $type, 'title' => $title );
 		}
 	}
@@ -1817,10 +1826,8 @@ function get_atom_elements($feed,$item,&$author) {
 			// preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 			$obj['orig'] = xmlify($body);
 			if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
-
 				$body = purify_html($body);
 				$body = html2bbcode($body);
-
 			}
 
 			$obj['content'] = $body;
@@ -1838,7 +1845,7 @@ function get_atom_elements($feed,$item,&$author) {
 		if($child[NAMESPACE_ACTIVITY]['obj_type'][0]['data']) {
 			$res['tgt_type'] = $child[NAMESPACE_ACTIVITY]['obj_type'][0]['data'];
 			$obj['type'] = $child[NAMESPACE_ACTIVITY]['obj_type'][0]['data'];
-		}	
+		}
 		if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'id') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 			$obj['id'] = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'];
 		if(x($child[SIMPLEPIE_NAMESPACE_ATOM_10], 'link') && $child[SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
@@ -1849,13 +1856,12 @@ function get_atom_elements($feed,$item,&$author) {
 			$body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 			if(! $body)
 				$body = $child[SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
+
 			// preserve a copy of the original body content in case we later need to parse out any microformat information, e.g. events
 			$obj['orig'] = xmlify($body);
 			if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
-
 				$body = purify_html($body);
 				$body = html2bbcode($body);
-
 			}
 
 			$obj['content'] = $body;
@@ -1896,6 +1902,7 @@ function encode_rel_links($links) {
 			$o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 		$o .= ' />' . "\n" ;
 	}
+
 	return xmlify($o);
 }
 
@@ -1915,7 +1922,7 @@ function item_store($arr,$allow_exec = false) {
 		return $ret;
 	}
 
-	$uplinked_comment = false;
+	//$uplinked_comment = false;
 
 	// If a page layout is provided, ensure it exists and belongs to us. 
 
@@ -1955,8 +1962,6 @@ function item_store($arr,$allow_exec = false) {
 	$arr['item_private']  = ((x($arr,'item_private'))  ? intval($arr['item_private'])        : 0 );
 	$arr['item_flags']    = ((x($arr,'item_flags'))    ? intval($arr['item_flags'])          : 0 );
 
-
-
 	// only detect language if we have text content, and if the post is private but not yet
 	// obscured, make it so.
 
@@ -1966,7 +1971,6 @@ function item_store($arr,$allow_exec = false) {
 		// apply the input filter here - if it is obscured it has been filtered already
 		$arr['body'] = z_input_filter($arr['uid'],$arr['body'],$arr['mimetype']);
 
-
 		if(local_channel() && (! $arr['sig'])) {
 			$channel = get_app()->get_channel();
 			if($channel['channel_hash'] === $arr['author_xchan']) {
@@ -1995,7 +1999,6 @@ function item_store($arr,$allow_exec = false) {
 			if($arr['body'])
 				$arr['body']  = json_encode(crypto_encapsulate($arr['body'],$key));
 		}
-
 	}
 
 	if((x($arr,'object')) && is_array($arr['object'])) {
@@ -2042,13 +2045,12 @@ function item_store($arr,$allow_exec = false) {
 	$arr['public_policy'] = ((x($arr,'public_policy')) ? notags(trim($arr['public_policy']))  : '' );
 
 	$arr['comment_policy'] = ((x($arr,'comment_policy')) ? notags(trim($arr['comment_policy']))  : 'contacts' );
-	
+
 	$arr['item_unseen'] = ((array_key_exists('item_unseen',$arr)) ? intval($arr['item_unseen']) : 1);
 
 	if($arr['comment_policy'] == 'none')
 		$arr['item_flags'] = $arr['item_flags'] | ITEM_NOCOMMENT;
 
-
 	// handle time travelers
 	// Allow a bit of fudge in case somebody just has a slightly slow/fast clock
 
@@ -2062,8 +2064,6 @@ function item_store($arr,$allow_exec = false) {
 	if(! $arr['plink'])
 		$arr['plink'] = $arr['llink'];
 
-
-
 	if($arr['parent_mid'] === $arr['mid']) {
 		$parent_id = 0;
 		$parent_deleted = 0;
@@ -2134,13 +2134,12 @@ function item_store($arr,$allow_exec = false) {
 			if($r[0]['item_flags'] & ITEM_WALL)
 				$arr['item_flags'] = $arr['item_flags'] | ITEM_WALL; 
 
-
 			// An uplinked comment might arrive with a downstream owner.
 			// Fix it.
 
 			if($r[0]['owner_xchan'] !== $arr['owner_xchan']) {
 				$arr['owner_xchan'] = $r[0]['owner_xchan'];
-				$uplinked_comment = true;
+//				$uplinked_comment = true;
 			}
 
 			// if the parent is private, force privacy for the entire conversation
@@ -2164,8 +2163,7 @@ function item_store($arr,$allow_exec = false) {
 
 	if($parent_deleted)
 		$arr['item_restrict'] = $arr['item_restrict'] | ITEM_DELETED;
-	
-	
+
 	$r = q("SELECT `id` FROM `item` WHERE `mid` = '%s' AND `uid` = %d LIMIT 1",
 		dbesc($arr['mid']),
 		intval($arr['uid'])
@@ -2270,7 +2268,7 @@ function item_store($arr,$allow_exec = false) {
 		}
 
 		$arr['term'] = $terms;
-	}	
+	}
 
 	call_hooks('post_remote_end',$arr);
 
@@ -2337,7 +2335,7 @@ function item_store_update($arr,$allow_exec = false) {
 		logger('item_store_update: original post not found: ' . $orig_post_id);
 		$ret['message'] = 'no original';
 		return $ret;
-	}		
+	}
 
 	// override the unseen flag with the original
 
@@ -2350,13 +2348,12 @@ function item_store_update($arr,$allow_exec = false) {
 	if($orig[0]['item_flags'] & ITEM_OBSCURED)
 		$orig[0]['item_flags'] = $orig[0]['item_flags'] ^ ITEM_OBSCURED;
 
-
 	$arr['item_flags'] = intval($arr['item_flags']) | $orig[0]['item_flags'];
 	$arr['item_restrict'] = intval($arr['item_restrict']) | $orig[0]['item_restrict'];
 
-
 	if(array_key_exists('edit',$arr))
-		unset($arr['edit']);	
+		unset($arr['edit']);
+
 	$arr['mimetype']      = ((x($arr,'mimetype'))      ? notags(trim($arr['mimetype']))      : 'text/bbcode');
 
 	if(($arr['mimetype'] == 'application/x-php') && (! $allow_exec)) {
@@ -2365,19 +2362,19 @@ function item_store_update($arr,$allow_exec = false) {
 		return $ret;
 	}
 
-    if(! ($arr['item_flags'] & ITEM_OBSCURED)) {
+	if(! ($arr['item_flags'] & ITEM_OBSCURED)) {
 
 		$arr['lang'] = detect_language($arr['body']);
-        // apply the input filter here - if it is obscured it has been filtered already
-        $arr['body'] = z_input_filter($arr['uid'],$arr['body'],$arr['mimetype']);
-
-        if(local_channel() && (! $arr['sig'])) {
-            $channel = get_app()->get_channel();
-            if($channel['channel_hash'] === $arr['author_xchan']) {
-                $arr['sig'] = base64url_encode(rsa_sign($arr['body'],$channel['channel_prvkey']));
-                $arr['item_flags'] |= ITEM_VERIFIED;
-            }
-        }
+		// apply the input filter here - if it is obscured it has been filtered already
+		$arr['body'] = z_input_filter($arr['uid'],$arr['body'],$arr['mimetype']);
+
+		if(local_channel() && (! $arr['sig'])) {
+			$channel = get_app()->get_channel();
+			if($channel['channel_hash'] === $arr['author_xchan']) {
+				$arr['sig'] = base64url_encode(rsa_sign($arr['body'],$channel['channel_prvkey']));
+				$arr['item_flags'] |= ITEM_VERIFIED;
+			}
+		}
 
 		$allowed_languages = get_pconfig($arr['uid'],'system','allowed_languages');
 	
@@ -2392,17 +2389,15 @@ function item_store_update($arr,$allow_exec = false) {
 			$arr = $translate['item'];
 		}
 		if($arr['item_private']) {
-            $key = get_config('system','pubkey');
-            $arr['item_flags'] = $arr['item_flags'] | ITEM_OBSCURED;
-            if($arr['title'])
-                $arr['title'] = json_encode(crypto_encapsulate($arr['title'],$key));
-            if($arr['body'])
-                $arr['body']  = json_encode(crypto_encapsulate($arr['body'],$key));
-        }
-
+			$key = get_config('system','pubkey');
+			$arr['item_flags'] = $arr['item_flags'] | ITEM_OBSCURED;
+			if($arr['title'])
+				$arr['title'] = json_encode(crypto_encapsulate($arr['title'],$key));
+			if($arr['body'])
+				$arr['body']  = json_encode(crypto_encapsulate($arr['body'],$key));
+		}
 	}
 
-
 	if((x($arr,'object')) && is_array($arr['object'])) {
 		activity_sanitise($arr['object']);
 		$arr['object'] = json_encode($arr['object']);
@@ -2418,7 +2413,6 @@ function item_store_update($arr,$allow_exec = false) {
 		$arr['attach'] = json_encode($arr['attach']);
 	}
 
-
 	unset($arr['id']);
 	unset($arr['uid']);
 	unset($arr['aid']);
@@ -2465,15 +2459,13 @@ function item_store_update($arr,$allow_exec = false) {
 	$arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : $orig[0]['app']);
 //	$arr['item_restrict'] = ((x($arr,'item_restrict')) ? intval($arr['item_restrict'])       : $orig[0]['item_restrict'] );
 //	$arr['item_flags']    = ((x($arr,'item_flags'))    ? intval($arr['item_flags'])          : $orig[0]['item_flags'] );
-	
+
 	$arr['sig']           = ((x($arr,'sig'))           ? $arr['sig']                         : '');
 	$arr['layout_mid']    = ((array_key_exists('layout_mid',$arr)) ? dbesc($arr['layout_mid'])           : $orig[0]['layout_mid'] );
 
 	$arr['public_policy'] = ((x($arr,'public_policy')) ? notags(trim($arr['public_policy']))  : $orig[0]['public_policy'] );
 	$arr['comment_policy'] = ((x($arr,'comment_policy')) ? notags(trim($arr['comment_policy']))  : $orig[0]['comment_policy'] );
 
-
-
 	call_hooks('post_remote_update',$arr);
 
 	if(x($arr,'cancel')) {
@@ -2495,11 +2487,11 @@ function item_store_update($arr,$allow_exec = false) {
 	logger('item_store_update: ' . print_r($arr,true), LOGGER_DATA);
 
 	$str = '';
-		foreach($arr as $k => $v) {
-			if($str)
-				$str .= ",";
-			$str .= " `" . $k . "` = '" . $v . "' ";
-		} 
+	foreach($arr as $k => $v) {
+		if($str)
+			$str .= ",";
+		$str .= " `" . $k . "` = '" . $v . "' ";
+	} 
 
 	$r = dbq("update `item` set " . $str . " where id = " . $orig_post_id );
 
@@ -2530,7 +2522,7 @@ function item_store_update($arr,$allow_exec = false) {
 		}
 
 		$arr['term'] = $terms;
-	}	
+	}
 
 	call_hooks('post_remote_update_end',$arr);
 
@@ -2568,8 +2560,9 @@ function store_diaspora_comment_sig($datarray, $channel, $parent_item, $post_id,
 
 	$signed_text = $datarray['mid'] . ';' . $parent_item['mid'] . ';' . $signed_body . ';' . $diaspora_handle;
 
+	/** @FIXME $uprvkey is undefined, do we still need this if-statement? */
 	if( $uprvkey !== false )
-		$authorsig = base64_encode(rsa_sign($signed_text,$channel['channel_prvkey'],'sha256'));
+		$authorsig = base64_encode(rsa_sign($signed_text, $channel['channel_prvkey'], 'sha256'));
 	else
 		$authorsig = '';
 
@@ -2630,7 +2623,6 @@ function send_status_notifications($post_id,$item) {
 
 	$link =  get_app()->get_baseurl() . '/display/' . $item['mid'];
 
-
 	$y = q("select id from notify where link = '%s' and uid = %d limit 1",
 		dbesc($link),
 		intval($item['uid'])
@@ -2641,50 +2633,50 @@ function send_status_notifications($post_id,$item) {
 
 	if(! $notify)
 		return;
+
 	require_once('include/enotify.php');
 	notification(array(
 		'type'         => NOTIFY_COMMENT,
 		'from_xchan'   => $item['author_xchan'],
 		'to_xchan'     => $r[0]['channel_hash'],
 		'item'         => $item,
-		'link'		   => $link,
+		'link'         => $link,
 		'verb'         => ACTIVITY_POST,
 		'otype'        => 'item',
 		'parent'       => $parent,
 		'parent_mid'   => $item['parent_mid']
 	));
-	return;
 }
 
 
-
-
-
-
 function get_item_contact($item,$contacts) {
 	if(! count($contacts) || (! is_array($item)))
 		return false;
+
 	foreach($contacts as $contact) {
 		if($contact['id'] == $item['contact-id']) {
 			return $contact;
 			break; // NOTREACHED
 		}
 	}
+
 	return false;
 }
 
-
-function tag_deliver($uid,$item_id) {
-
-	// Called when we deliver things that might be tagged in ways that require delivery processing.
-	// Handles community tagging of posts and also look for mention tags 
-	// and sets up a second delivery chain if appropriate
-
-	$a = get_app();
+/**
+ * @brief Called when we deliver things that might be tagged in ways that require delivery processing.
+ *
+ * Handles community tagging of posts and also look for mention tags and sets up
+ * a second delivery chain if appropriate.
+ *
+ * @param int $uid
+ * @param int $item_id
+ */
+function tag_deliver($uid, $item_id) {
 
 	$mention = false;
 
-	/**
+	/*
 	 * Fetch stuff we need - a channel and an item
 	 */
 
@@ -2693,7 +2685,7 @@ function tag_deliver($uid,$item_id) {
 	);
 	if(! $u)
 		return;
-		
+
 	$i = q("select * from item where id = %d and uid = %d limit 1",
 		intval($item_id),
 		intval($uid)
@@ -2713,8 +2705,7 @@ function tag_deliver($uid,$item_id) {
 		return;
 	}
 
-
-	/**
+	/*
 	 * Seems like a good place to plug in a poke notification.
 	 */
 
@@ -2722,7 +2713,7 @@ function tag_deliver($uid,$item_id) {
 		$poke_notify = true;
 
 		if(($item['obj_type'] == "") || ($item['obj_type'] !== ACTIVITY_OBJ_PERSON) || (! $item['object'])) 
-				$poke_notify = false;
+			$poke_notify = false;
 
 		$obj = json_decode_plus($item['object']);
 		if($obj) {
@@ -2732,7 +2723,6 @@ function tag_deliver($uid,$item_id) {
 		if($item['item_restrict'] & ITEM_DELETED)
 			$poke_notify = false;
 
-
 		$verb = urldecode(substr($item['verb'],strpos($item['verb'],'#')+1));
 		if($poke_notify) {
 			require_once('include/enotify.php');
@@ -2749,7 +2739,7 @@ function tag_deliver($uid,$item_id) {
 		}
 	}
 
-	/**
+	/*
 	 * Do community tagging
 	 */
 
@@ -2783,7 +2773,7 @@ function tag_deliver($uid,$item_id) {
 							dbesc(datetime_convert()),
 							dbesc($j_tgt['id']),
 							intval($u[0]['channel_id'])
-						);		
+						);
 						proc_run('php','include/notifier.php','edit_post',$p[0]['id']);
 					}
 				}
@@ -2793,7 +2783,7 @@ function tag_deliver($uid,$item_id) {
 			logger('tag_deliver: tag permission denied for ' . $u[0]['channel_address']);
 	}
 
-	/**
+	/*
 	 * A "union" is a message which our channel has sourced from another channel.
 	 * This sets up a second delivery chain just like forum tags do.
 	 * Find out if this is a source-able post.
@@ -2819,11 +2809,10 @@ function tag_deliver($uid,$item_id) {
 	}
 
 
-	/**
+	/*
 	 * Now we've got those out of the way. Let's see if this is a post that's tagged for re-delivery
 	 */
 
-
 	$terms = get_terms_oftype($item['term'],TERM_MENTION);
 
 	if($terms)
@@ -2833,20 +2822,20 @@ function tag_deliver($uid,$item_id) {
 
 	if($terms) {
 		foreach($terms as $term) {
-			if(link_compare($term['url'],$link)) {			
+			if(link_compare($term['url'],$link)) {
 				$mention = true;
 				break;
 			}
 		}
-	}				
+	}
 
 	if($mention) {
 		logger('tag_deliver: mention found for ' . $u[0]['channel_name']);
-		
+
 		$r = q("update item set item_flags = ( item_flags | %d ) where id = %d",
 			intval(ITEM_MENTIONSME),
 			intval($item_id)
-		);			
+		);
 
 		// At this point we've determined that the person receiving this post was mentioned in it or it is a union.
 		// Now let's check if this mention was inside a reshare so we don't spam a forum
@@ -2866,6 +2855,7 @@ function tag_deliver($uid,$item_id) {
 
 		$tagged = false;
 		$plustagged = false;
+		$matches = array();
 
 		$pattern = '/@\!?\[zrl\=' . preg_quote($term['url'],'/') . '\]' . preg_quote($term['term'],'/') . '\[\/zrl\]/';
 		if(preg_match($pattern,$body,$matches)) 
@@ -2898,7 +2888,7 @@ function tag_deliver($uid,$item_id) {
 		$arr = array('channel_id' => $uid, 'item' => $item, 'body' => $body);
 		call_hooks('tagged',$arr);
 
-		/**
+		/*
 		 * Kill two birds with one stone. As long as we're here, send a mention notification.
 		 */
 
@@ -2926,7 +2916,6 @@ function tag_deliver($uid,$item_id) {
 			logger('tag_delivery denied for uid ' . $uid . ' and xchan ' . $item['author_xchan']);
 			return;
 		}
-
 	}
 
 	if((! $mention) && (! $union)) {
@@ -2948,25 +2937,18 @@ function tag_deliver($uid,$item_id) {
 
 	logger('tag_deliver: creating second delivery chain.');
 	start_delivery_chain($u[0],$item,$item_id,null);
-
 }
 
 /**
- * @function tgroup_check($uid,$item)
+ * @brief This function is called pre-deliver to see if a post matches the criteria to be tag delivered.
  *
- * This function is called pre-deliver to see if a post matches the criteria to be tag delivered.
  * We don't actually do anything except check that it matches the criteria.
  * This is so that the channel with tag_delivery enabled can receive the post even if they turn off
  * permissions for the sender to send their stream. tag_deliver() can't be called until the post is actually stored.
  * By then it would be too late to reject it. 
  */
-
-
-
 function tgroup_check($uid,$item) {
 
-	$a = get_app();
-
 	$mention = false;
 
 	// check that the message originated elsewhere and is a top-level post
@@ -2980,6 +2962,7 @@ function tgroup_check($uid,$item) {
 		);
 		if($r)
 			return true;
+
 		return false;
 	}
 	if(! perm_is_allowed($uid,$item['author_xchan'],'tag_deliver'))
@@ -3001,13 +2984,12 @@ function tgroup_check($uid,$item) {
 
 	if($terms) {
 		foreach($terms as $term) {
-			if(link_compare($term['url'],$link)) {			
+			if(link_compare($term['url'],$link)) {
 				$mention = true;
 				break;
 			}
 		}
-	}				
-
+	}
 
 	if($mention) {
 		logger('tgroup_check: mention found for ' . $u[0]['channel_name']);
@@ -3029,12 +3011,12 @@ function tgroup_check($uid,$item) {
 
 	$body = preg_replace('/\[share(.*?)\[\/share\]/','',$body);
 
-	
 //	$pattern = '/@\!?\[zrl\=' . preg_quote($term['url'],'/') . '\]' . preg_quote($term['term'] . '+','/') . '\[\/zrl\]/';
 
 	$pattern = '/@\!?\[zrl\=([^\]]*?)\]((?:.(?!\[zrl\=))*?)\+\[\/zrl\]/';
 
 	$found = false;
+	$matches = array();
 
 	if(preg_match_all($pattern,$body,$matches,PREG_SET_ORDER)) {
 		$max_forums = get_config('system','max_tagged_forums');
@@ -3059,7 +3041,6 @@ function tgroup_check($uid,$item) {
 	}
 
 	return true;
-
 }
 
 /**
@@ -3067,10 +3048,13 @@ function tgroup_check($uid,$item) {
  * receiving the post. This starts the second delivery chain, by resetting permissions and ensuring 
  * that ITEM_UPLINK is set on the parent post, and storing the current owner_xchan as the source_xchan. 
  * We'll become the new owner. If called without $parent, this *is* the parent post.
+ *
+ * @param array $channel
+ * @param array $item
+ * @param int $item_id
+ * @param boolean $parent
  */
-
-function start_delivery_chain($channel,$item,$item_id,$parent) {
-
+function start_delivery_chain($channel, $item, $item_id, $parent) {
 
 	// Change this copy of the post to a forum head message and deliver to all the tgroup members
 	// also reset all the privacy bits to the forum default permissions
@@ -3093,7 +3077,6 @@ function start_delivery_chain($channel,$item,$item_id,$parent) {
 	if(! $parent)
 		$flag_bits = $flag_bits | ITEM_ORIGIN;
 
-
 	// unset the nocomment bit if it's there. 
 
 	if($flag_bits & ITEM_NOCOMMENT)
@@ -3113,7 +3096,7 @@ function start_delivery_chain($channel,$item,$item_id,$parent) {
 		$r = q("update item set source_xchan = owner_xchan where id = %d",
 			intval($item_id)
 		);
-	} 
+	}
 
 	$title = $item['title'];
 	$body  = $item['body'];
@@ -3155,39 +3138,28 @@ function start_delivery_chain($channel,$item,$item_id,$parent) {
 		intval($item_id)
 	);
 
-
-
 	if($r)
 		proc_run('php','include/notifier.php','tgroup',$item_id);
 	else
-		logger('start_delivery_chain: failed to update item');			
-
-	return;
+		logger('start_delivery_chain: failed to update item');
 }
 
-
-
 /**
- * @function check_item_source($uid,$item)
- * @param $uid
- * @param $item
+ * @brief
  *
- * @description
  * Checks to see if this item owner is referenced as a source for this channel and if the post 
  * matches the rules for inclusion in this channel. Returns true if we should create a second delivery
  * chain and false if none of the rules apply, or if the item is private.
+ *
+ * @param int $uid
+ * @param array $item
  */
- 
-
-function check_item_source($uid,$item) {
-
-
+function check_item_source($uid, $item) {
 	$r = q("select * from source where src_channel_id = %d and ( src_xchan = '%s' or src_xchan = '*' ) limit 1",
 		intval($uid),
 		dbesc(($item['source_xchan']) ?  $item['source_xchan'] : $item['owner_xchan'])
 	);
 
-
 	if(! $r)
 		return false;
 
@@ -3196,18 +3168,15 @@ function check_item_source($uid,$item) {
 		dbesc($item['owner_xchan'])
 	);
 
-			
 	if(! $x)
 		return false;
 
-
 	if(! ($x[0]['abook_their_perms'] & PERMS_A_REPUBLISH))
 		return false;
 
 	if($item['item_private'] && (! ($x[0]['abook_flags'] & ABOOK_FLAG_FEED)))
 		return false;
 
-
 	if($r[0]['src_channel_xchan'] === $item['owner_xchan'])
 		return false;
 
@@ -3218,6 +3187,7 @@ function check_item_source($uid,$item) {
 	$text = prepare_text($item['body'],$item['mimetype']);
 	$text = html2plain($text);
 
+	/** @BUG $items is undefined, should this be $item? */
 	$tags = ((count($items['term'])) ? $items['term'] : false);
 
 	$words = explode("\n",$r[0]['src_patt']);
@@ -3232,12 +3202,11 @@ function check_item_source($uid,$item) {
 				return true;
 		}
 	}
+
 	return false;
 }
 
 
-
-
 function mail_store($arr) {
 
 	if(! $arr['channel_id']) {
@@ -3262,7 +3231,6 @@ function mail_store($arr) {
 	$arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 
 	$arr['mail_flags']    = ((x($arr,'mail_flags'))    ? intval($arr['mail_flags'])          : 0 );
-	
 
 	if(! $arr['parent_mid']) {
 		logger('mail_store: missing parent');
@@ -3328,9 +3296,9 @@ function mail_store($arr) {
 			'type'       => NOTIFY_MAIL,
 			'item'       => $arr,
 			'verb'       => ACTIVITY_POST,
-		    'otype'      => 'mail'
+			'otype'      => 'mail'
 		);
-			
+
 		notification($notif_params);
 	}
 
@@ -3338,35 +3306,35 @@ function mail_store($arr) {
 	return $current_post;
 }
 
-
 /**
+ * @brief Process atom feed and update anything/everything we might need to update.
  *
- * consume_feed - process atom feed and update anything/everything we might need to update
- *
- * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
- *
- * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
- *             It is this person's stuff that is going to be updated.
- * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
- *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST 
- *             have a contact record.
  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or 
  *        might not) try and subscribe to it.
  * $datedir sorts in reverse order
- * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been 
- *      imported prior to its children being seen in the stream unless we are certain
- *      of how the feed is arranged/ordered.
- * With $pass = 1, we only pull parent items out of the stream.
- * With $pass = 2, we only pull children (comments/likes).
+ *
+ * @param array $xml
+ *   The (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
+ * @param $importer
+ *   The contact_record (joined to user_record) of the local user who owns this
+ *   relationship. It is this person's stuff that is going to be updated.
+ * @param $contact
+ *   The person who is sending us stuff. If not set, we MAY be processing a "follow" activity
+ *   from an external network and MAY create an appropriate contact record. Otherwise, we MUST 
+ *   have a contact record.
+ * @param int $pass by default ($pass = 0) we cannot guarantee that a parent item has been 
+ *   imported prior to its children being seen in the stream unless we are certain
+ *   of how the feed is arranged/ordered.
+ *  * With $pass = 1, we only pull parent items out of the stream.
+ *  * With $pass = 2, we only pull children (comments/likes).
  *
  * So running this twice, first with pass 1 and then with pass 2 will do the right
  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
  * model where comments can have sub-threads. That would require some massive sorting
  * to get all the feed items into a mostly linear ordering, and might still require
- * recursion.  
+ * recursion.
  */
-
-function consume_feed($xml,$importer,&$contact,$pass = 0) {
+function consume_feed($xml, $importer, &$contact, $pass = 0) {
 
 	require_once('library/simplepie/simplepie.inc');
 
@@ -3403,7 +3371,6 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 					$when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 			}
 
-
 			if($deleted && is_array($contact)) {
 				$r = q("SELECT * from item where mid = '%s' and author_xchan = '%s' and uid = %d limit 1",
 					dbesc(base64url_encode($mid)),
@@ -3418,7 +3385,7 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 						logger('consume_feed: deleting item ' . $item['id'] . ' mid=' . base64url_decode($item['mid']), LOGGER_DEBUG);
 						drop_item($item['id'],false);
 					}
-				}	
+				}
 			}
 		}
 	}
@@ -3449,7 +3416,6 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 				if($pass == 1)
 					continue;
 
-
 				// Have we seen it? If not, import it.
 
 				$item_id  = base64url_encode($item->get_id());
@@ -3469,15 +3435,12 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 					$x = import_author_unknown(array('name' => $author['author_name'],'url' => $author['author_link'],'photo' => array('src' => $author['author_photo'])));
 					if($x) 
 						$datarray['author_xchan'] = $x;
-					
 				}
 				if(! $datarray['author_xchan'])
 					$datarray['author_xchan'] = $contact['xchan_hash'];
 
-
 				$datarray['owner_xchan'] = $contact['xchan_hash'];
 
-
 				$r = q("SELECT edited FROM item WHERE mid = '%s' AND uid = %d LIMIT 1",
 					dbesc($item_id),
 					intval($importer['channel_id'])
@@ -3501,15 +3464,12 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 				$datarray['parent_mid'] = $parent_mid;
 				$datarray['uid'] = $importer['channel_id'];
 
-
-
 				logger('consume_feed: ' . print_r($datarray,true),LOGGER_DATA);
 
 				$xx = item_store($datarray);
 				$r = $xx['item_id'];
 				continue;
 			}
-
 			else {
 
 				// Head post of a conversation. Have we seen it? If not, import it.
@@ -3538,15 +3498,12 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 					$x = import_author_unknown(array('name' => $author['author_name'],'url' => $author['author_link'],'photo' => array('src' => $author['author_photo'])));
 					if($x) 
 						$datarray['author_xchan'] = $x;
-					
 				}
 				if(! $datarray['author_xchan'])
 					$datarray['author_xchan'] = $contact['xchan_hash'];
 
-
 				$datarray['owner_xchan'] = $contact['xchan_hash'];
 
-
 				$r = q("SELECT edited FROM item WHERE mid = '%s' AND uid = %d LIMIT 1",
 					dbesc($item_id),
 					intval($importer['channel_id'])
@@ -3568,7 +3525,6 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 					continue;
 				}
 
-
 				$datarray['parent_mid'] = $item_id;
 				$datarray['uid'] = $importer['channel_id'];
 
@@ -3581,24 +3537,18 @@ function consume_feed($xml,$importer,&$contact,$pass = 0) {
 
 				logger('consume_feed: author ' . print_r($author,true),LOGGER_DEBUG); 
 
-
 				logger('consume_feed: ' . print_r($datarray,true),LOGGER_DATA);
 
 				$xx = item_store($datarray);
 				$r = $xx['item_id'];
 				continue;
-
 			}
 		}
 	}
-
-
 }
 
 function update_feed_item($uid,$datarray) {
-
 	logger('update_feed_item: not implemented! ' . $uid . ' ' . print_r($datarray,true), LOGGER_DATA);
-
 }
 
 
@@ -3608,6 +3558,7 @@ function handle_feed($uid,$abook_id,$url) {
 	$channel = channelx_by_n($uid);
 	if(! $channel)
 		return;
+
 	$x = q("select * from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d and abook_channel = %d limit 1",
 		dbesc($abook_id),
 		intval($uid)
@@ -3629,13 +3580,13 @@ function atom_author($tag,$name,$uri,$h,$w,$type,$photo) {
 	$o = '';
 	if(! $tag)
 		return $o;
+
 	$name = xmlify($name);
 	$uri = xmlify($uri);
 	$h = intval($h);
 	$w = intval($w);
 	$photo = xmlify($photo);
 
-
 	$o .= "<$tag>\r\n";
 	$o .= "<name>$name</name>\r\n";
 	$o .= "<uri>$uri</uri>\r\n";
@@ -3645,13 +3596,12 @@ function atom_author($tag,$name,$uri,$h,$w,$type,$photo) {
 	call_hooks('atom_author', $o);
 
 	$o .= "</$tag>\r\n";
+
 	return $o;
 }
 
 function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
 
-	$a = get_app();
-
 	if(! $item['parent'])
 		return;
 
@@ -3664,7 +3614,6 @@ function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
 	else
 		$body = $item['body'];
 
-
 	$o = "\r\n\r\n<entry>\r\n";
 
 	if(is_array($author))
@@ -3698,11 +3647,9 @@ function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
 	if(($item['item_private']) || strlen($item['allow_cid']) || strlen($item['allow_gid']) || strlen($item['deny_cid']) || strlen($item['deny_gid']))
 		$o .= '<zot:private>' . (($item['item_private']) ? $item['item_private'] : 1) . '</zot:private>' . "\r\n";
 
-
 	if($item['app'])
 		$o .= '<statusnet:notice_info local_id="' . $item['id'] . '" source="' . xmlify($item['app']) . '" ></statusnet:notice_info>' . "\r\n";
 
-
 	$verb = construct_verb($item);
 	$o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
 	$actobj = construct_activity_object($item);
@@ -3730,7 +3677,7 @@ function atom_entry($item,$type,$author,$owner,$comment = false,$cid = 0) {
 	call_hooks('atom_entry', $o);
 
 	$o .= '</entry>' . "\r\n";
-	
+
 	return $o;
 }
 
@@ -3753,7 +3700,6 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 
 		logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
 
-
 		if(stristr($image , $site . '/photo/')) {
 			// Only embed locally hosted photos
 			$replace = false;
@@ -3815,7 +3761,7 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 					}
 				}
 			}
-		}	
+		}
 
 		$new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/zmg]';
 		$orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/zmg]'));
@@ -3836,6 +3782,7 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 function has_permissions($obj) {
 	if(($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
 		return true;
+
 	return false;
 }
 
@@ -3858,10 +3805,15 @@ function compare_permissions($obj1,$obj2) {
 	return false;
 }
 
-// returns an array of contact-ids that are allowed to see this object
-
+/**
+ * @brief Returns an array of contact-ids that are allowed to see this object.
+ *
+ * @param object $obj
+ * @return array
+ */
 function enumerate_permissions($obj) {
 	require_once('include/group.php');
+
 	$allow_people = expand_acl($obj['allow_cid']);
 	$allow_groups = expand_groups(expand_acl($obj['allow_gid']));
 	$deny_people  = expand_acl($obj['deny_cid']);
@@ -3869,6 +3821,7 @@ function enumerate_permissions($obj) {
 	$recipients   = array_unique(array_merge($allow_people,$allow_groups));
 	$deny         = array_unique(array_merge($deny_people,$deny_groups));
 	$recipients   = array_diff($recipients,$deny);
+
 	return $recipients;
 }
 
@@ -3885,6 +3838,7 @@ function item_getfeedtags($item) {
 				$ret[] = array('@',$term['url'],$term['term']);
 		}
 	}
+
 	return $ret;
 }
 
@@ -3905,11 +3859,11 @@ function item_getfeedattach($item) {
 			}
 		}
 	}
+
 	return $ret;
 }
 
 
-	
 function item_expire($uid,$days) {
 
 	if((! $uid) || ($days < 1))
@@ -3970,7 +3924,6 @@ function item_expire($uid,$days) {
 	}
 
 //	proc_run('php',"include/notifier.php","expire","$uid");
-	
 }
 
 function retain_item($id) {
@@ -4012,7 +3965,6 @@ function drop_items($items) {
 
 function drop_item($id,$interactive = true,$stage = DROPITEM_NORMAL,$force = false) {
 
-
 	$a = get_app();
 
 	// locate item to be deleted
@@ -4057,7 +4009,6 @@ function drop_item($id,$interactive = true,$stage = DROPITEM_NORMAL,$force = fal
 			intval($item['id'])
 		);
 
-
 		$arr = array('item' => $item, 'interactive' => $interactive, 'stage' => $stage);
 		call_hooks('drop_item', $arr );
 
@@ -4089,7 +4040,6 @@ function drop_item($id,$interactive = true,$stage = DROPITEM_NORMAL,$force = fal
 			proc_run('php','include/notifier.php','drop',$notify_id);
 
 		goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
-
 	}
 	else {
 		if(! $interactive)
@@ -4097,14 +4047,20 @@ function drop_item($id,$interactive = true,$stage = DROPITEM_NORMAL,$force = fal
 		notice( t('Permission denied.') . EOL);
 		goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
 	}
-	
 }
 
-// This function does not check for permission and does not send notifications and does not check recursion.
-// It merely destroys all resources associated with an item. 
-// Please do not use without a suitable wrapper.
-
-function delete_item_lowlevel($item,$stage = DROPITEM_NORMAL,$force = false) {
+/**
+ * @warning This function does not check for permission and does not send
+ * notifications and does not check recursion.
+ * It merely destroys all resources associated with an item.
+ * Please do not use without a suitable wrapper.
+ *
+ * @param array $item
+ * @param int $stage
+ * @param boolean $force
+ * @return boolean
+ */
+function delete_item_lowlevel($item, $stage = DROPITEM_NORMAL, $force = false) {
 
 	$linked_item = (($item['resource_id']) ? true : false);
 
@@ -4152,7 +4108,6 @@ function delete_item_lowlevel($item,$stage = DROPITEM_NORMAL,$force = false) {
 			break;
 	}
 
-
 	// immediately remove any undesired profile likes. 
 
 	q("delete from likes where iid = %d and channel_id = %d",
@@ -4160,7 +4115,6 @@ function delete_item_lowlevel($item,$stage = DROPITEM_NORMAL,$force = false) {
 		intval($item['uid'])
 	);
 
-
 	// network deletion request. Keep the message structure so that we can deliver delete notifications.
 	// Come back after several days (or perhaps a month) to do the lowlevel delete (DROPITEM_PHASE2).
 
@@ -4182,7 +4136,7 @@ function delete_item_lowlevel($item,$stage = DROPITEM_NORMAL,$force = false) {
 		intval(TERM_OBJ_POST)
 	);
 
-	// FIXME remove notifications for this item
+	/** @FIXME remove notifications for this item */
 
 	return true;
 }
@@ -4203,6 +4157,7 @@ function first_post_date($uid,$wall = false) {
 //		logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
 		return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
 	}
+
 	return false;
 }
 
@@ -4210,15 +4165,19 @@ function first_post_date($uid,$wall = false) {
  * modified posted_dates() {below} to arrange the list in years, which we'll eventually 
  * use to make a menu of years with collapsible sub-menus for the months instead of the 
  * current flat list of all representative dates.
+ *
+ * @param int $uid
+ * @param unknown $wall
+ * @param unknown $mindate
+ * @return array
  */
-
-function list_post_dates($uid,$wall,$mindate) {
+function list_post_dates($uid, $wall, $mindate) {
 	$dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
 
 	if($mindate)
-		$dthen = datetime_convert('',date_default_timezone_get(),$mindate);
+		$dthen = datetime_convert('',date_default_timezone_get(), $mindate);
 	else
-		$dthen = first_post_date($uid,$wall);
+		$dthen = first_post_date($uid, $wall);
 	if(! $dthen)
 		return array();
 
@@ -4245,6 +4204,7 @@ function list_post_dates($uid,$wall,$mindate) {
  		$ret[$dyear][] = array($str,$end_month,$start_month);
 		$dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
 	}
+
 	return $ret;
 }
 
@@ -4307,7 +4267,6 @@ function fetch_post_tags($items,$link = false) {
 		);
 	}
 
-
 	for($x = 0; $x < count($items); $x ++) {
 		if($tags) {
 			foreach($tags as $t) {
@@ -4338,7 +4297,6 @@ function fetch_post_tags($items,$link = false) {
 
 function zot_feed($uid,$observer_xchan,$arr) {
 
-
 	$result = array();
 	$mindate = null;
 	$message_id = null;
@@ -4351,9 +4309,9 @@ function zot_feed($uid,$observer_xchan,$arr) {
 		$message_id = $arr['message_id'];
 	}
 
-
 	if(! $mindate)
 		$mindate = NULL_DATE;
+
 	$mindate = dbesc($mindate);
 
 	logger('zot_feed: requested for uid ' . $uid . ' from observer ' . $observer_xchan, LOGGER_DEBUG);
@@ -4383,7 +4341,7 @@ function zot_feed($uid,$observer_xchan,$arr) {
 
 	$items = array();
 
-	// FIXME
+	/** @FIXME fix this part for PostgreSQL */
 
 	if(ACTIVE_DBTYPE == DBTYPE_POSTGRES) { 
 		return array();
@@ -4426,12 +4384,10 @@ function zot_feed($uid,$observer_xchan,$arr) {
 		$items = fetch_post_tags($items);
 		require_once('include/conversation.php');
 		$items = conv_sort($items,'ascending');
-
 	}
 	else
 		$items = array();
 
-
 	logger('zot_feed: number items: ' . count($items),LOGGER_DEBUG);
 
 	foreach($items as $item)
@@ -4452,13 +4408,13 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 	$sql_nets = '';
 	$sql_options = '';
 	$sql_extra2 = '';
-    $sql_extra3 = '';
+	$sql_extra3 = '';
 	$def_acl = '';
 
 	$item_uids = ' true ';
-	
+
 	if ($arr['uid']) $uid= $arr['uid'];
-	
+
 	if($channel) {
 		$uid = $channel['channel_id'];
 		$uidhash = $channel['channel_hash'];
@@ -4470,65 +4426,64 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 
 	if($arr['wall'])
 		$sql_options .= " and (item_flags & " . intval(ITEM_WALL) . ")>0 ";
-									
+
 	$sql_extra = " AND item.parent IN ( SELECT parent FROM item WHERE (item_flags & " . intval(ITEM_THREAD_TOP) . ")>0 $sql_options ) ";
-	
+
 	if($arr['since_id'])
-   		$sql_extra .= " and item.id > " . $since_id . " ";
-   		
-    if($arr['gid'] && $uid) {
-        $r = q("SELECT * FROM `groups` WHERE id = %d AND uid = %d LIMIT 1",
-            intval($arr['group']),
-            intval($uid)
-        );
-        if(! $r) {
+		$sql_extra .= " and item.id > " . $since_id . " ";
+
+	if($arr['gid'] && $uid) {
+		$r = q("SELECT * FROM `groups` WHERE id = %d AND uid = %d LIMIT 1",
+			intval($arr['group']),
+			intval($uid)
+		);
+		if(! $r) {
 			$result['message']  = t('Collection not found.');
 			return $result;
-        }
+		}
 
 		$contact_str = '';
-        $contacts = group_get_members($group);
-        if($contacts) {
+		/** @FIXME $group is undefined */
+		$contacts = group_get_members($group);
+		if ($contacts) {
 			foreach($contacts as $c) {
 				if($contact_str)
 					$contact_str .= ',';
-            	$contact_str .= "'" . $c['xchan'] . "'";
+
+				$contact_str .= "'" . $c['xchan'] . "'";
 			}
-        }
-        else {
+		} else {
 			$contact_str = ' 0 ';	
 			$result['message'] = t('Collection is empty.');
 			return $result;
-        }
+		}
 
-        $sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND (( author_xchan IN ( $contact_str ) OR owner_xchan in ( $contact_str)) or allow_gid like '" . protect_sprintf('%<' . dbesc($r[0]['hash']) . '>%') . "' ) and id = parent and item_restrict = 0 ) ";
+		$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND (( author_xchan IN ( $contact_str ) OR owner_xchan in ( $contact_str)) or allow_gid like '" . protect_sprintf('%<' . dbesc($r[0]['hash']) . '>%') . "' ) and id = parent and item_restrict = 0 ) ";
 
 		$x = group_rec_byhash($uid,$r[0]['hash']);
 		$result['headline'] = sprintf( t('Collection: %s'),$x['name']);
+	}
+	elseif($arr['cid'] && $uid) {
 
-    }
-    elseif($arr['cid'] && $uid) {
-
-        $r = q("SELECT abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d and abook_channel = %d and not ( abook_flags & " . intval(ABOOK_FLAG_BLOCKED) . ")>0 limit 1",
+		$r = q("SELECT abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d and abook_channel = %d and not ( abook_flags & " . intval(ABOOK_FLAG_BLOCKED) . ")>0 limit 1",
 			intval($arr['cid']),
 			intval(local_channel())
-        );
-        if($r) {
-            $sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND uid = " . intval($arr['uid']) . " AND ( author_xchan = '" . dbesc($r[0]['abook_xchan']) . "' or owner_xchan = '" . dbesc($r[0]['abook_xchan']) . "' ) and item_restrict = 0 ) ";
+		);
+		if ($r) {
+			$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND uid = " . intval($arr['uid']) . " AND ( author_xchan = '" . dbesc($r[0]['abook_xchan']) . "' or owner_xchan = '" . dbesc($r[0]['abook_xchan']) . "' ) and item_restrict = 0 ) ";
 			$result['headline'] = sprintf( t('Connection: %s'),$r[0]['xchan_name']);
-        }
-        else {
+		} else {
 			$result['message'] = t('Connection not found.');
 			return $result;
-        }
-    }
+		}
+	}
 
-    if($arr['datequery']) {
-        $sql_extra3 .= protect_sprintf(sprintf(" AND item.created <= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$arr['datequery']))));
-    }
-    if($arr['datequery2']) {
-        $sql_extra3 .= protect_sprintf(sprintf(" AND item.created >= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$arr['datequery2']))));
-    }
+	if ($arr['datequery']) {
+		$sql_extra3 .= protect_sprintf(sprintf(" AND item.created <= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$arr['datequery']))));
+	}
+	if ($arr['datequery2']) {
+		$sql_extra3 .= protect_sprintf(sprintf(" AND item.created >= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$arr['datequery2']))));
+	}
 
 	if(! array_key_exists('nouveau',$arr)) {
 		$sql_extra2 = " AND item.parent = item.id ";
@@ -4542,37 +4497,33 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
             $sql_extra .= sprintf(" AND item.body like '%s' ",
                 dbesc(protect_sprintf('%' . $arr['search'] . '%'))
             );
-    }
-
-    if(strlen($arr['file'])) {
-        $sql_extra .= term_query('item',$arr['files'],TERM_FILE);
-    }
-
-    if($arr['conv'] && $channel) {
-        $sql_extra .= sprintf(" AND parent IN (SELECT distinct parent from item where ( author_xchan like '%s' or ( item_flags & %d )>0)) ",
-            dbesc(protect_sprintf($uidhash)),
-            intval(ITEM_MENTIONSME)
-        );
-    }
-
+	}
 
-    if(($client_mode & CLIENT_MODE_UPDATE) && (! ($client_mode & CLIENT_MODE_LOAD))) {
+	if (strlen($arr['file'])) {
+		$sql_extra .= term_query('item',$arr['files'],TERM_FILE);
+	}
 
-        // only setup pagination on initial page view
-        $pager_sql = '';
+	if ($arr['conv'] && $channel) {
+		$sql_extra .= sprintf(" AND parent IN (SELECT distinct parent from item where ( author_xchan like '%s' or ( item_flags & %d )>0)) ",
+			dbesc(protect_sprintf($uidhash)),
+			intval(ITEM_MENTIONSME)
+		);
+	}
 
-    }
-    else {
-        $itemspage = (($channel) ? get_pconfig($uid,'system','itemspage') : 20);
-        $a->set_pager_itemspage(((intval($itemspage)) ? $itemspage : 20));
-        $pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval(get_app()->pager['itemspage']), intval(get_app()->pager['start']));
-    }
+	if (($client_mode & CLIENT_MODE_UPDATE) && (! ($client_mode & CLIENT_MODE_LOAD))) {
+		// only setup pagination on initial page view
+		$pager_sql = '';
+	} else {
+		$itemspage = (($channel) ? get_pconfig($uid,'system','itemspage') : 20);
+		$a->set_pager_itemspage(((intval($itemspage)) ? $itemspage : 20));
+		$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval(get_app()->pager['itemspage']), intval(get_app()->pager['start']));
+	}
 
-	if(isset($arr['start']) && isset($arr['records']))
-        $pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval($arr['records']), intval($arr['start']));
+	if (isset($arr['start']) && isset($arr['records']))
+		$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval($arr['records']), intval($arr['start']));
 
-	if(array_key_exists('cmin',$arr) || array_key_exists('cmax',$arr)) {
-		if(($arr['cmin'] != 0) || ($arr['cmax'] != 99)) {
+	if (array_key_exists('cmin',$arr) || array_key_exists('cmax',$arr)) {
+		if (($arr['cmin'] != 0) || ($arr['cmax'] != 99)) {
 
 			// Not everybody who shows up in the network stream will be in your address book.
 			// By default those that aren't are assumed to have closeness = 99; but this isn't
@@ -4581,33 +4532,32 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 
 			$sql_nets .= " AND ";
 
-			if($arr['cmax'] == 99)
+			if ($arr['cmax'] == 99)
 				$sql_nets .= " ( ";
 
 			$sql_nets .= "( abook.abook_closeness >= " . intval($arr['cmin']) . " ";
 			$sql_nets .= " AND abook.abook_closeness <= " . intval($arr['cmax']) . " ) ";
-			if($cmax == 99)
+			if ($cmax == 99)
 				$sql_nets .= " OR abook.abook_closeness IS NULL ) ";
-    	}
+		}
 	}
 
-    $simple_update = (($client_mode & CLIENT_MODE_UPDATE) ? " and ( item.item_unseen = 1 ) " : '');
-    if($client_mode & CLIENT_MODE_LOAD)
-        $simple_update = '';
+	$simple_update = (($client_mode & CLIENT_MODE_UPDATE) ? " and ( item.item_unseen = 1 ) " : '');
+	if ($client_mode & CLIENT_MODE_LOAD)
+		$simple_update = '';
 
-    $start = dba_timer();
+	//$start = dba_timer();
 
 	require_once('include/security.php');
 	$sql_extra .= item_permissions_sql($channel['channel_id']);
 
-	if($arr['pages'])
+	if ($arr['pages'])
 		$item_restrict = " AND (item_restrict & " . ITEM_WEBPAGE . ") ";
 	else
 		$item_restrict = " AND item_restrict = 0 ";
 
-
-    if($arr['nouveau'] && ($client_mode & CLIENT_MODE_LOAD) && $channel) {
-        // "New Item View" - show all items unthreaded in reverse created date order
+	if ($arr['nouveau'] && ($client_mode & CLIENT_MODE_LOAD) && $channel) {
+		// "New Item View" - show all items unthreaded in reverse created date order
 
         $items = q("SELECT item.*, item.id AS item_id FROM item
             WHERE $item_uids $item_restrict
@@ -4616,22 +4566,21 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
             ORDER BY item.received DESC $pager_sql "
         );
 
-        require_once('include/items.php');
+		require_once('include/items.php');
 
-        xchan_query($items);
+		xchan_query($items);
 
-        $items = fetch_post_tags($items,true);
-    }
-    else {
+		$items = fetch_post_tags($items,true);
+	} else {
 
-        // Normal conversation view
+		// Normal conversation view
 
-        if($arr['order'] === 'post')
+		if($arr['order'] === 'post')
 			$ordering = "created";
-        else
+		else
 			$ordering = "commented";
 
-        if(($client_mode & CLIENT_MODE_LOAD) || ($client_mode == CLIENT_MODE_NORMAL)) {
+		if(($client_mode & CLIENT_MODE_LOAD) || ($client_mode == CLIENT_MODE_NORMAL)) {
 
             // Fetch a page full of parent items for this page
 
@@ -4657,48 +4606,46 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
             );
         }
 
-        $first = dba_timer();
+		//$first = dba_timer();
 
-        // Then fetch all the children of the parents that are on this page
+		// Then fetch all the children of the parents that are on this page
 
-        if($r) {
+		if($r) {
 
-            $parents_str = ids_to_querystr($r,'item_id');
+			$parents_str = ids_to_querystr($r,'item_id');
 
 			if($arr['top'])
 				$sql_extra = ' and id = parent ' . $sql_extra;
 
-            $items = q("SELECT item.*, item.id AS item_id FROM item
-                WHERE $item_uids $item_restrict
-                AND item.parent IN ( %s )
-                $sql_extra ",
-                dbesc($parents_str)
-            );
+			$items = q("SELECT item.*, item.id AS item_id FROM item
+				WHERE $item_uids $item_restrict
+				AND item.parent IN ( %s )
+				$sql_extra ",
+				dbesc($parents_str)
+			);
 
-            $second = dba_timer();
+			$second = dba_timer();
 
-            xchan_query($items);
+			xchan_query($items);
 
-            $third = dba_timer();
+			//$third = dba_timer();
 
-            $items = fetch_post_tags($items,true);
+			$items = fetch_post_tags($items,true);
 
-            $fourth = dba_timer();
+			//$fourth = dba_timer();
 
 			require_once('include/conversation.php');
-            $items = conv_sort($items,$ordering);
-
-            //logger('items: ' . print_r($items,true));
+			$items = conv_sort($items,$ordering);
 
-        }
-        else {
-            $items = array();
-        }
+			//logger('items: ' . print_r($items,true));
+		} else {
+			$items = array();
+		}
 
-        if($parents_str && $arr['mark_seen'])
-            $update_unseen = ' AND parent IN ( ' . dbesc($parents_str) . ' )';
-			// FIXME finish mark unseen sql
-    }
+		if($parents_str && $arr['mark_seen'])
+			$update_unseen = ' AND parent IN ( ' . dbesc($parents_str) . ' )';
+			/** @FIXME finish mark unseen sql */
+	}
 
 	return $items;
 }
@@ -4719,7 +4666,7 @@ function update_remote_id($channel,$post_id,$webpage,$pagetitle,$namespace,$remo
 		$pagetitle = $remote_id;
 	}
 
-	if($page_type) {	
+	if($page_type) {
 
 		// store page info as an alternate message_id so we can access it via 
 		//    https://sitename/page/$channelname/$pagetitle
@@ -4747,17 +4694,17 @@ function update_remote_id($channel,$post_id,$webpage,$pagetitle,$namespace,$remo
 			);
 		}
 	}
-
 }
 
 
-
 /**
- * change access control for item with message_id $mid and channel_id $uid
+ * @brief Change access control for item with message_id $mid and channel_id $uid.
+ *
+ * @param string $xchan_hash
+ * @param string $mid
+ * @param int $uid
  */
-
-
-function item_add_cid($xchan_hash,$mid,$uid) {
+function item_add_cid($xchan_hash, $mid, $uid) {
 	$r = q("select id from item where mid = '%s' and uid = %d and allow_cid like '%s'",
 		dbesc($mid),
 		intval($uid),
@@ -4809,27 +4756,28 @@ function set_linkified_perms($linkified, &$str_contact_allow, &$str_group_allow,
 			}
 			if(strpos($access_tag,'cid:') === 0) {
 				$str_contact_allow .= '<' . substr($access_tag,4) . '>';
-				$access_tag = '';	
+				$access_tag = '';
 			}
 			elseif(strpos($access_tag,'gid:') === 0) {
 				$str_group_allow .= '<' . substr($access_tag,4) . '>';
-				$access_tag = '';	
+				$access_tag = '';
 			}
 		}
 	}
 }
 
-
-/*
- * We can't trust ITEM_ORIGIN to tell us if this is a local comment 
+/**
+ * We can't trust ITEM_ORIGIN to tell us if this is a local comment
  * which needs to be relayed, because it was misconfigured at one point for several
  * months and set for some remote items (in alternate delivery chains). This could
  * cause looping, so use this hackish but accurate method. 
+ *
+ * @param array $item
+ * @return boolean
  */
-
-
 function comment_local_origin($item) {
-	if(stripos($item['mid'],get_app()->get_hostname()) && ($item['parent'] != $item['id']))
+	if(stripos($item['mid'], get_app()->get_hostname()) && ($item['parent'] != $item['id']))
 		return true;
-	return false;		
+
+	return false;
 }
diff --git a/include/language.php b/include/language.php
index ec5fa84fa..1e8528dc1 100644
--- a/include/language.php
+++ b/include/language.php
@@ -1,8 +1,8 @@
 <?php
 /**
- * @file
+ * @file include/language.php
  *
- * @brief translation support
+ * @brief Translation support.
  *
  * This file contains functions to work with translations and other
  * language related tasks.
@@ -26,7 +26,7 @@ function get_browser_language() {
 	$langs = array();
 	$lang_parse = array();
 
-	if (x($_SERVER,'HTTP_ACCEPT_LANGUAGE')) {
+	if (x($_SERVER, 'HTTP_ACCEPT_LANGUAGE')) {
 		// break up string into pieces (languages and q factors)
 		preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', 
 			$_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
@@ -110,9 +110,12 @@ function pop_lang() {
 	$a->language = $a->langsave;
 }
 
-
-// load string translation table for alternate language
-
+/**
+ * @brief Load string translation table for alternate language.
+ *
+ * @param string $lang language code in 2-letter ISO 639-1 (en, de, fr) format
+ * @param boolean $install (optional) default false
+ */
 function load_translation_table($lang, $install = false) {
 	global $a;
 
@@ -139,14 +142,13 @@ function load_translation_table($lang, $install = false) {
 	if(file_exists("view/local-$lang/strings.php")) {
 		include("view/local-$lang/strings.php");
 	}
-
 }
 
 /**
- * @brief translate string if translation exists.
+ * @brief Translate string if translation exists.
  *
  * @param string $s string that should get translated
- * @param string $ctx optional context to appear in po file
+ * @param string $ctx (optional) context to appear in po file
  * @return translated string if exists, otherwise return $s
  *
  */
@@ -154,37 +156,53 @@ function t($s, $ctx = '') {
 	global $a;
 
 	$cs = $ctx ? '__ctx:' . $ctx . '__ ' . $s : $s;
-	if(x($a->strings, $cs)) {
+	if (x($a->strings, $cs)) {
 		$t = $a->strings[$cs];
+
 		return is_array($t) ? $t[0] : $t;
 	}
+
 	return $s;
 }
 
-
+/**
+ * @brief
+ *
+ * @param string $singular
+ * @param string $plural
+ * @param int $count
+ * @param string $ctx
+ * @return string
+ */
 function tt($singular, $plural, $count, $ctx = ''){
 	$a = get_app();
 
-	$cs = $ctx?"__ctx:".$ctx."__ ".$singular:$singular;
-	if(x($a->strings,$cs)) {
+	$cs = $ctx ? "__ctx:" . $ctx . "__ " . $singular : $singular;
+	if (x($a->strings,$cs)) {
 		$t = $a->strings[$cs];
 		$f = 'string_plural_select_' . str_replace('-', '_', $a->language);
-		if(! function_exists($f))
+		if (! function_exists($f))
 			$f = 'string_plural_select_default';
+
 		$k = $f($count);
+
 		return is_array($t) ? $t[$k] : $t;
 	}
-	
-	if ($count != 1){
+
+	if ($count != 1) {
 		return $plural;
 	} else {
 		return $singular;
 	}
 }
 
-// provide a fallback which will not collide with 
-// a function defined in any language file 
-
+/**
+ * @brief Provide a fallback which will not collide with a function defined in
+ * any language file.
+ *
+ * @param int $n
+ * @return boolean
+ */
 function string_plural_select_default($n) {
 	return ($n != 1);
 }
@@ -200,25 +218,25 @@ function string_plural_select_default($n) {
  * returned through config['system']['language_detect_min_confidence'].
  *
  * @see http://pear.php.net/package/Text_LanguageDetect
- * @param s A string to examine
+ * @param string $s A string to examine
  * @return Language code in 2-letter ISO 639-1 (en, de, fr) format
  */
 function detect_language($s) {
 	require_once('Text/LanguageDetect.php');
 
 	$min_length = get_config('system', 'language_detect_min_length');
-	if($min_length === false)
+	if ($min_length === false)
 		$min_length = LANGUAGE_DETECT_MIN_LENGTH;
 
 	$min_confidence = get_config('system', 'language_detect_min_confidence');
-	if($min_confidence === false)
+	if ($min_confidence === false)
 		$min_confidence = LANGUAGE_DETECT_MIN_CONFIDENCE;
 
 	// embedded apps have long base64 strings which will trip up the detector.
 	$naked_body = preg_replace('/\[app\](.*?)\[\/app\]/','',$s);
 	// strip off bbcode
 	$naked_body = preg_replace('/\[(.+?)\]/', '', $naked_body);
-	if(mb_strlen($naked_body) < intval($min_length)) {
+	if (mb_strlen($naked_body) < intval($min_length)) {
 		logger('string length less than ' . intval($min_length), LOGGER_DATA);
 		return '';
 	}
@@ -233,11 +251,11 @@ function detect_language($s) {
 		logger('detect language exception: ' . $e->getMessage(), LOGGER_DATA);
 	}
 
-	if((! $lng) || (! (x($lng,'language')))) {
+	if ((! $lng) || (! (x($lng,'language')))) {
 		return '';
 	}
 
-	if($lng['confidence'] < (float) $min_confidence) {
+	if ($lng['confidence'] < (float) $min_confidence) {
 		logger('detect language: confidence less than ' . (float) $min_confidence, LOGGER_DATA);
 		return '';
 	}
@@ -251,38 +269,37 @@ function detect_language($s) {
  * By default we use the localized language name. You can switch the result
  * to any language with the optional 2nd parameter $l.
  *
- * $s and $l should be in 2-letter ISO 639-1 format
+ * $s and $l should be in 2-letter ISO 639-1 format.
  *
  * If nothing could be looked up it returns $s.
  *
- * @param $s Language code to look up
- * @param $l (optional) In which language to return the name
+ * @param string $s Language code to look up
+ * @param string $l (optional) In which language to return the name
  * @return string with the language name, or $s if unrecognized
+ *
+ * @todo include CommerceGuys\Intl through composer like SabreDAV.
  */
 require_once(__DIR__ . '/../library/intl/vendor/autoload.php');
 use CommerceGuys\Intl\Language\LanguageRepository;
 function get_language_name($s, $l = null) {
 	// get() expects the second part to be in upper case
-	if(strpos($s,'-') !== false) $s = substr($s,0,2) . strtoupper(substr($s,2));
-	if($l !== null && strpos($l,'-') !== false) $l = substr($l,0,2) . strtoupper(substr($l,2));
+	if (strpos($s, '-') !== false) $s = substr($s, 0, 2) . strtoupper(substr($s, 2));
+	if ($l !== null && strpos($l, '-') !== false) $l = substr($l, 0, 2) . strtoupper(substr($l, 2));
 
 	$languageRepository = new LanguageRepository;
 
 	// Sometimes intl doesn't like the second part at all ...
 	try {
 		$language = $languageRepository->get($s, $l);
-	}
-	catch(CommerceGuys\Intl\Exception\UnknownLanguageException $e) {
-		$s = substr($s,0,2);
-		if($l !== null) $l = substr($s,0,2);
+	} catch(CommerceGuys\Intl\Exception\UnknownLanguageException $e) {
+		$s = substr($s, 0, 2);
+		if($l !== null) $l = substr($s, 0, 2);
 		try {
 			$language = $languageRepository->get($s, $l);
-		}
-		catch(CommerceGuys\Intl\Exception\UnknownLanguageException $e) {
+		} catch (CommerceGuys\Intl\Exception\UnknownLanguageException $e) {
 			return $s; // Give up
 		}
-	} 
+	}
 
 	return $language->getName();
 }
-
diff --git a/include/network.php b/include/network.php
index 6aefc0b30..a0782692e 100644
--- a/include/network.php
+++ b/include/network.php
@@ -1,33 +1,39 @@
-<?php /** @file */
-
-
+<?php
+/**
+ * @file include/network.php
+ */
 
+/**
+ * @brief Returns path to CA file.
+ *
+ * @return string
+ */
 function get_capath() {
 	return appdirpath() . '/library/cacert.pem';
 }
 
 /**
- * @function z_fetch_url
+ * @brief fetches an URL.
+ *
  * @param string $url
  *    URL to fetch
- * @param boolean $binary = false
+ * @param boolean $binary default false
  *    TRUE if asked to return binary results (file download)
- * @param int $redirects = 0
+ * @param int $redirects default 0
  *    internal use, recursion counter
- * @param array $opts (optional parameters)
- *    'accept_content' => supply Accept: header with 'accept_content' as the value
- *    'timeout' => int seconds, default system config value or 60 seconds
- *    'http_auth' => username:password
- *    'novalidate' => do not validate SSL certs, default is to validate using our CA list
- *    'nobody' => only return the header
- *    
- * @returns array
- *    'return_code' => HTTP return code or 0 if timeout or failure
- *    'success' => boolean true (if HTTP 2xx result) or false
- *    'header' => HTTP headers
- *    'body' => fetched content
+ * @param array $opts (optional parameters) assoziative array with:
+ *  * \b accept_content => supply Accept: header with 'accept_content' as the value
+ *  * \b timeout => int seconds, default system config value or 60 seconds
+ *  * \b http_auth => username:password
+ *  * \b novalidate => do not validate SSL certs, default is to validate using our CA list
+ *  * \b nobody => only return the header
+ *
+ * @return array an assoziative array with:
+ *  * \e int \b return_code => HTTP return code or 0 if timeout or failure
+ *  * \e boolean \b success => boolean true (if HTTP 2xx result) or false
+ *  * \e string \b header => HTTP headers
+ *  * \e string \b body => fetched content
  */
-
 function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) {
 
 	$ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => "");
@@ -129,14 +135,15 @@ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) {
 	if(x($opts,'debug')) {
 		$ret['debug'] = $curl_info;
 	}
-	
+
 	@curl_close($ch);
 	return($ret);
 }
 
 
 /**
- * @function z_post_url
+ * @brief
+ *
  * @param string $url
  *    URL to post
  * @param mixed $params
@@ -151,17 +158,15 @@ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) {
  *    'timeout' => int seconds, default system config value or 60 seconds
  *    'http_auth' => username:password
  *    'novalidate' => do not validate SSL certs, default is to validate using our CA list
- *    
- * @returns array
- *    'return_code' => HTTP return code or 0 if timeout or failure
- *    'success' => boolean true (if HTTP 2xx result) or false
- *    'header' => HTTP headers
- *    'body' => fetched content
+ * @return array an assoziative array with:
+ *  * \e int \b return_code => HTTP return code or 0 if timeout or failure
+ *  * \e boolean \b success => boolean true (if HTTP 2xx result) or false
+ *  * \e string \b header => HTTP headers
+ *  * \e string \b body => content
+ *  * \e string \b debug => from curl_info()
  */
-
-
 function z_post_url($url,$params, $redirects = 0, $opts = array()) {
-	
+
 	$ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => "");
 
 	$ch = curl_init($url);
@@ -257,24 +262,35 @@ function z_post_url($url,$params, $redirects = 0, $opts = array()) {
 		logger('z_post_url: debug: ' . print_r($curl_info,true), LOGGER_DATA);
 	}
 
-	$ret['body'] = substr($s,strlen($header));
+	$ret['body'] = substr($s, strlen($header));
 	$ret['header'] = $header;
 
 	if(x($opts,'debug')) {
 		$ret['debug'] = $curl_info;
 	}
 
-
 	curl_close($ch);
 	return($ret);
 }
 
+/**
+ * @brief Like z_post_url() but with an application/json HTTP header.
+ *
+ * Add a "Content-Type: application/json" HTTP-header to $opts and call z_post_url().
+ *
+ * @see z_post_url()
+ *
+ * @param string $url
+ * @param array $params
+ * @param number $redirects default 0
+ * @param array $opts (optional) curl options
+ * @return z_post_url()
+ */
+function z_post_url_json($url, $params, $redirects = 0, $opts = array()) {
 
-function z_post_url_json($url,$params,$redirects = 0, $opts = array()) {
+	$opts = array_merge($opts, array('headers' => array('Content-Type: application/json')));
 
-	$opts = array_merge($opts,array('headers' => array('Content-Type: application/json')));
 	return z_post_url($url,json_encode($params),$redirects,$opts);
-
 }
 
 
@@ -305,22 +321,19 @@ function xml_status($st, $message = '') {
 }
 
 /**
- * @function http_status_exit
- * 
- * Send HTTP status header and exit
+ * @brief Send HTTP status header and exit.
+ *
  * @param int $val
  *    integer HTTP status result value
  * @param string $msg
  *    optional message
  * @returns (does not return, process is terminated)
  */
+function http_status_exit($val, $msg = '') {
 
-function http_status_exit($val,$msg = '') {
-
-	$err = '';
-	if($val >= 400)
+	if ($val >= 400)
 		$msg = (($msg) ? $msg : 'Error');
-	if($val >= 200 && $val < 300)
+	if ($val >= 200 && $val < 300)
 		$msg = (($msg) ? $msg : 'OK');
 
 	logger('http_status_exit ' . $val . ' ' . $msg);	
diff --git a/include/permissions.php b/include/permissions.php
index 4d7def346..82145066b 100644
--- a/include/permissions.php
+++ b/include/permissions.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @file incldue/permissions.php
+ * @file include/permissions.php
  *
  * This file conntains functions to check and work with permissions.
  */
@@ -445,21 +445,21 @@ function site_default_perms() {
 
 
 /**
- * @function get_role_perms($role)
- * @param string $role
- * 
- *   Given a string for the channel role ('social','forum', etc)
+ * @brief Return an array of all permissions for this role.
+ *
+ * Given a string for the channel role ('social','forum', etc)
  * return an array of all permission fields pre-filled for this role.
  * This includes the channel permission scope indicators (anything beginning with 'channel_') as well as
- *    perms_auto:   true or false to create auto-permissions for this channel
- *    perms_follow: The permissions to apply when initiating a connection request to another channel
- *    perms_accept: The permissions to apply when accepting a connection request from another channel (not automatic)
- *    default_collection: true or false to make the default ACL include the channel's default collection 
- *    directory_publish: true or false to publish this channel in the directory
+ *  * perms_auto:   true or false to create auto-permissions for this channel
+ *  * perms_follow: The permissions to apply when initiating a connection request to another channel
+ *  * perms_accept: The permissions to apply when accepting a connection request from another channel (not automatic)
+ *  * default_collection: true or false to make the default ACL include the channel's default collection 
+ *  * directory_publish: true or false to publish this channel in the directory
  * Any attributes may be extended (new roles defined) and modified (specific permissions altered) by plugins
  *
+ * @param string $role
+ * @return array
  */
-
 function get_role_perms($role) {
 
 	$ret = array();
@@ -800,9 +800,8 @@ function get_role_perms($role) {
 }
 
 /**
- * @brief Returns a list or roles, grouped by type
+ * @brief Returns a list or roles, grouped by type.
  *
- * @param string $current The current role
  * @return string Returns an array of roles, grouped by type
  */
 function get_roles() {
@@ -811,7 +810,8 @@ function get_roles() {
 		t('Community Forum') => array('forum' => t('Mostly Public'), 'forum_restricted' => t('Restricted'), 'forum_private' => t('Private')),
 		t('Feed Republish') => array('feed' => t('Mostly Public'), 'feed_restricted' => t('Restricted')),
 		t('Special Purpose') => array('soapbox' => t('Celebrity/Soapbox'), 'repository' => t('Group Repository')),
-		t('Other') => array('custom' => t('Custom/Expert Mode')));
+		t('Other') => array('custom' => t('Custom/Expert Mode'))
+	);
 
 	return $roles;
 }
diff --git a/include/photos.php b/include/photos.php
index c4d5a33aa..1672e310a 100644
--- a/include/photos.php
+++ b/include/photos.php
@@ -1,10 +1,21 @@
-<?php /** @file */
+<?php
+/**
+ * @file include/photos.php
+ * @brief Functions related to photo handling.
+ */
 
 require_once('include/permissions.php');
 require_once('include/items.php');
 require_once('include/photo/photo_driver.php');
 
-
+/**
+ * @brief
+ *
+ * @param array $channel
+ * @param array $observer
+ * @param array $args
+ * @return array
+ */
 function photo_upload($channel, $observer, $args) {
 
 	$ret = array('success' => false);
@@ -18,12 +29,12 @@ function photo_upload($channel, $observer, $args) {
 
 	call_hooks('photo_upload_begin', $args);
 
-	/**
+	/*
 	 * Determine the album to use
 	 */
 
-	$album       = $args['album'];
-	$newalbum    = $args['newalbum'];
+	$album    = $args['album'];
+	$newalbum = $args['newalbum'];
 
 	logger('photo_upload: album= ' . $album . ' newalbum= ' . $newalbum , LOGGER_DEBUG);
 
@@ -44,8 +55,7 @@ function photo_upload($channel, $observer, $args) {
 	$str_group_deny    = perms2str(((is_array($args['group_deny']))    ? $args['group_deny']    : explode(',',$args['group_deny'])));
 	$str_contact_deny  = perms2str(((is_array($args['contact_deny']))  ? $args['contact_deny']  : explode(',',$args['contact_deny'])));
 
-
-	if($args['data']) {
+	if ($args['data']) {
 
 		// allow an import from a binary string representing the image.
 		// This bypasses the upload step and max size limit checking
@@ -56,23 +66,21 @@ function photo_upload($channel, $observer, $args) {
 		// this is going to be deleted if it exists
 		$src = '/tmp/deletemenow';
 		$type = $args['type'];
-	}
-	else {
+	} else {
 		$f = array('src' => '', 'filename' => '', 'filesize' => 0, 'type' => '');
 
 		call_hooks('photo_upload_file',$f);
 
-		if(x($f,'src') && x($f,'filesize')) {
+		if (x($f,'src') && x($f,'filesize')) {
 			$src      = $f['src'];
 			$filename = $f['filename'];
 			$filesize = $f['filesize'];
 			$type     = $f['type'];
-		}
-		else {
-			$src        = $_FILES['userfile']['tmp_name'];
-			$filename   = basename($_FILES['userfile']['name']);
-			$filesize   = intval($_FILES['userfile']['size']);
-			$type       = $_FILES['userfile']['type'];
+		} else {
+			$src      = $_FILES['userfile']['tmp_name'];
+			$filename = basename($_FILES['userfile']['name']);
+			$filesize = intval($_FILES['userfile']['size']);
+			$type     = $_FILES['userfile']['type'];
 		}
 
 		if (! $type) 
@@ -82,14 +90,14 @@ function photo_upload($channel, $observer, $args) {
 
 		$maximagesize = get_config('system','maximagesize');
 
-		if(($maximagesize) && ($filesize > $maximagesize)) {
+		if (($maximagesize) && ($filesize > $maximagesize)) {
 			$ret['message'] =  sprintf ( t('Image exceeds website size limit of %lu bytes'), $maximagesize);
 			@unlink($src);
 			call_hooks('photo_upload_end',$ret);
 			return $ret;
 		}
 
-		if(! $filesize) {
+		if (! $filesize) {
 			$ret['message'] = t('Image file is empty.');
 			@unlink($src);
 			call_hooks('photo_post_end',$ret);
@@ -101,14 +109,13 @@ function photo_upload($channel, $observer, $args) {
 		$imagedata = @file_get_contents($src);
 	}
 
-
 	$r = q("select sum(size) as total from photo where aid = %d and scale = 0 ",
 		intval($account_id)
 	);
 
 	$limit = service_class_fetch($channel_id,'photo_upload_limit');
 
-	if(($r) && ($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
+	if (($r) && ($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
 		$ret['message'] = upgrade_message();
 		@unlink($src);
 		call_hooks('photo_post_end',$ret);
@@ -117,7 +124,7 @@ function photo_upload($channel, $observer, $args) {
 
 	$ph = photo_factory($imagedata, $type);
 
-	if(! $ph->is_valid()) {
+	if (! $ph->is_valid()) {
 		$ret['message'] = t('Unable to process image');
 		logger('photo_upload: unable to process image');
 		@unlink($src);
@@ -127,13 +134,12 @@ function photo_upload($channel, $observer, $args) {
 
 	$exif = $ph->orient($src);
 
-
 	@unlink($src);
 
 	$max_length = get_config('system','max_image_length');
-	if(! $max_length)
+	if (! $max_length)
 		$max_length = MAX_IMAGE_LENGTH;
-	if($max_length > 0)
+	if ($max_length > 0)
 		$ph->scaleImage($max_length);
 
 	$width  = $ph->getWidth();
@@ -144,7 +150,7 @@ function photo_upload($channel, $observer, $args) {
 	$photo_hash = (($args['resource_id']) ? $args['resource_id'] : photo_new_resource());
 
 	$visitor = '';
-	if($channel['channel_hash'] !== $observer['xchan_hash'])
+	if ($channel['channel_hash'] !== $observer['xchan_hash'])
 		$visitor = $observer['xchan_hash'];
 
 	$errors = false;
@@ -163,7 +169,6 @@ function photo_upload($channel, $observer, $args) {
 	if($args['description'])
 		$p['description'] = $args['description'];
 
-
 	$r1 = $ph->save($p);
 	if(! $r1)
 		$errors = true;
@@ -214,8 +219,6 @@ function photo_upload($channel, $observer, $args) {
 		}
 	}
 
-
-
 	$item_flags = ITEM_WALL|ITEM_ORIGIN|ITEM_THREAD_TOP;
 	$item_restrict = (($visible) ? ITEM_VISIBLE : ITEM_HIDDEN);
 	$title = '';
@@ -263,10 +266,9 @@ function photo_upload($channel, $observer, $args) {
 			$tag = '[zmg]';
 	}
 
-
-	$arr['body']          = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo_hash . ']' 
-				. $tag . z_root() . "/photo/{$photo_hash}-{$smallest}.".$ph->getExt() . '[/zmg]'
-				. '[/zrl]';
+	$arr['body'] = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo_hash . ']' 
+			. $tag . z_root() . "/photo/{$photo_hash}-{$smallest}.".$ph->getExt() . '[/zmg]'
+			. '[/zrl]';
 
 	$result = item_store($arr);
 	$item_id = $result['item_id'];
@@ -304,7 +306,7 @@ function photos_albums_list($channel, $observer) {
 	if(! perm_is_allowed($channel_id, $observer_xchan, 'view_photos'))
 		return false;
 
-	// FIXME - create a permissions SQL which works on arbitrary observers and channels, regardless of login or web status
+	/** @FIXME create a permissions SQL which works on arbitrary observers and channels, regardless of login or web status */
 
 	$sql_extra = permissions_sql($channel_id);
 
@@ -327,7 +329,8 @@ function photos_albums_list($channel, $observer) {
 				'total' => $album['total'], 
 				'url' => z_root() . '/photos/' . $channel['channel_address'] . '/album/' . bin2hex($album['album']), 
 				'urlencode' => urlencode($album['album']),
-				'bin2hex' => bin2hex($album['album']));
+				'bin2hex' => bin2hex($album['album'])
+			);
 			$ret['albums'][] = $entry;
 		}
 	}
@@ -360,11 +363,19 @@ function photos_album_widget($channelx,$observer,$albums = null) {
 				? t('Upload New Photos') : '')
 		));
 	}
+
 	return $o;
 }
 
-
-function photos_list_photos($channel,$observer,$album = '') {
+/**
+ * @brief
+ *
+ * @param array $channel
+ * @param array $observer
+ * @param string $album default empty
+ * @return boolean|array
+ */
+function photos_list_photos($channel, $observer, $album = '') {
 
 	$channel_id     = $channel['channel_id'];
 	$observer_xchan = (($observer) ? $observer['xchan_hash'] : '');
@@ -384,7 +395,7 @@ function photos_list_photos($channel,$observer,$album = '') {
 		intval(PHOTO_NORMAL),
 		intval(PHOTO_PROFILE)
 	);
-	
+
 	if($r) {
 		for($x = 0; $x < count($r); $x ++) {
 			$r[$x]['src'] = z_root() . '/photo/' . $r[$x]['resource_id'] . '-' . $r[$x]['scale'];
@@ -416,6 +427,7 @@ function photos_album_exists($channel_id, $album) {
  * @brief Renames a photo album in a channel.
  *
  * @todo Do we need to check if new album name already exists?
+ *
  * @param int $channel_id id of the channel
  * @param string $oldname The name of the album to rename
  * @param string $newname The new name of the album
@@ -429,25 +441,31 @@ function photos_album_rename($channel_id, $oldname, $newname) {
 	);
 }
 
+/**
+ * @brief
+ *
+ * @param int $channel_id
+ * @param string $album
+ * @param string $remote_xchan
+ * @return string|boolean
+ */
+function photos_album_get_db_idstr($channel_id, $album, $remote_xchan = '') {
 
-function photos_album_get_db_idstr($channel_id,$album,$remote_xchan = '') {
-
-	if($remote_xchan) {
+	if ($remote_xchan) {
 		$r = q("SELECT distinct resource_id as from photo where xchan = '%s' and uid = %d and album = '%s' ",
 			dbesc($remote_xchan),
 			intval($channel_id),
 			dbesc($album)
 		);
-	}
-	else {
+	} else {
 		$r = q("SELECT distinct resource_id  from photo where uid = %d and album = '%s' ",
 			intval($channel_id),
 			dbesc($album)
 		);
 	}
-	if($r) {
+	if ($r) {
 		$arr = array();
-		foreach($r as $rr) {
+		foreach ($r as $rr) {
 			$arr[] = "'" . dbesc($rr['resource_id']) . "'" ;
 		}
 		$str = implode(',',$arr);
@@ -457,6 +475,15 @@ function photos_album_get_db_idstr($channel_id,$album,$remote_xchan = '') {
 	return false;
 }
 
+/**
+ * @brief Creates a new photo item.
+ *
+ * @param array $channel
+ * @param string $creator_hash
+ * @param array $photo
+ * @param boolean $visible default false
+ * @return int item_id
+ */
 function photos_create_item($channel, $creator_hash, $photo, $visible = false) {
 
 	// Create item container
@@ -506,7 +533,6 @@ function getGps($exifCoord, $hemi) {
     $flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
 
     return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
-
 }
 
 function gps2Num($coordPart) {
@@ -521,4 +547,3 @@ function gps2Num($coordPart) {
 
     return floatval($parts[0]) / floatval($parts[1]);
 }
-
diff --git a/include/plugin.php b/include/plugin.php
index b6cfc8d89..4d8405b62 100755
--- a/include/plugin.php
+++ b/include/plugin.php
@@ -7,13 +7,12 @@
 
 require_once("include/smarty.php");
 
+
 /**
  * @brief unloads an addon.
  *
  * @param string $plugin name of the addon
- * @return void
  */
-
 function unload_plugin($plugin){
 	logger("Addons: unloading " . $plugin, LOGGER_DEBUG);
 
@@ -28,9 +27,8 @@ function unload_plugin($plugin){
  * @brief uninstalls an addon.
  *
  * @param string $plugin name of the addon
- * @return bool
+ * @return boolean
  */
-
 function uninstall_plugin($plugin) {
 	unload_plugin($plugin);
 
@@ -70,7 +68,7 @@ function install_plugin($plugin) {
 
 	$plugin_admin = (function_exists($plugin . '_plugin_admin') ? 1 : 0);
 
-	$r = q("INSERT INTO `addon` (`name`, `installed`, `timestamp`, `plugin_admin`) VALUES ( '%s', 1, %d , %d ) ",
+	q("INSERT INTO `addon` (`name`, `installed`, `timestamp`, `plugin_admin`) VALUES ( '%s', 1, %d , %d ) ",
 		dbesc($plugin),
 		intval($t),
 		$plugin_admin
@@ -196,6 +194,7 @@ function register_hook($hook, $file, $function, $priority = 0) {
 		dbesc($function),
 		dbesc($priority)
 	);
+
 	return $r;
 }
 
@@ -206,7 +205,7 @@ function register_hook($hook, $file, $function, $priority = 0) {
  * @param string $hook the name of the hook
  * @param string $file the name of the file that hooks into
  * @param string $function the name of the function that the hook called
- * @return mixed
+ * @return array
  */
 function unregister_hook($hook, $file, $function) {
 	$r = q("DELETE FROM hook WHERE hook = '%s' AND `file` = '%s' AND `function` = '%s'",
@@ -214,6 +213,7 @@ function unregister_hook($hook, $file, $function) {
 		dbesc($file),
 		dbesc($function)
 	);
+
 	return $r;
 }
 
@@ -243,8 +243,7 @@ function load_hooks() {
 }
 
 /**
- *
- * @function insert_hook($hook,$fn)
+ * @brief Inserts a hook into a page request.
  *
  * Insert a short-lived hook into the running page request. 
  * Hooks are normally persistent so that they can be called 
@@ -255,9 +254,9 @@ function load_hooks() {
  * which will not persist beyond the life of this page request
  * or the current process. 
  *
- * @param string $hook;
+ * @param string $hook
  *     name of hook to attach callback
- * @param string $fn;
+ * @param string $fn
  *     function name of callback handler
  */ 
 function insert_hook($hook, $fn) {
@@ -305,9 +304,10 @@ function call_hooks($name, &$data = null) {
 
 
 /**
- * @brief parse plugin comment in search of plugin infos.
+ * @brief Parse plugin comment in search of plugin infos.
  *
  * like
+ * \code
  *   * Name: Plugin
  *   * Description: A plugin which plugs in
  *   * Version: 1.2.3
@@ -315,7 +315,7 @@ function call_hooks($name, &$data = null) {
  *   * Author: Jane <email>
  *   * Compat: Red [(version)], Friendica [(version)]
  *   *
- *
+ *\endcode
  * @param string $plugin the name of the plugin
  * @return array with the plugin information
  */
@@ -363,9 +363,10 @@ function get_plugin_info($plugin){
 
 
 /**
- * @brief parse theme comment in search of theme infos.
+ * @brief Parse theme comment in search of theme infos.
  *
  * like
+ * \code
  *   * Name: My Theme
  *   * Description: My Cool Theme
  *   * Version: 1.2.3
@@ -373,7 +374,7 @@ function get_plugin_info($plugin){
  *   * Maintainer: Jane <profile url>
  *   * Compat: Friendica [(version)], Red [(version)]
  *   *
- *
+ * \endcode
  * @param string $theme the name of the theme
  * @return array
  */
@@ -456,13 +457,11 @@ function get_theme_screenshot($theme) {
 	return($a->get_baseurl() . '/images/blank.png');
 }
 
-
 /**
- * @brief add CSS to <head>
+ * @brief add CSS to \<head\>
  *
  * @param string $src
  * @param string $media change media attribute (default to 'screen')
- * @return void
  */
 function head_add_css($src, $media = 'screen') {
 	get_app()->css_sources[] = array($src, $media);
@@ -471,21 +470,23 @@ function head_add_css($src, $media = 'screen') {
 function head_remove_css($src, $media = 'screen') {
 	$a = get_app();
 	$index = array_search(array($src, $media), $a->css_sources);
-	if($index !== false)
+	if ($index !== false)
 		unset($a->css_sources[$index]);
 }
 
 function head_get_css() {
 	$str = '';
 	$sources = get_app()->css_sources;
-	if(count($sources)) 
-		foreach($sources as $source)
+	if (count($sources)) {
+		foreach ($sources as $source)
 			$str .= format_css_if_exists($source);
+	}
+
 	return $str;
 }
 
 function format_css_if_exists($source) {
-	if(strpos($source[0], '/') !== false)
+	if (strpos($source[0], '/') !== false)
 		$path = $source[0];
 	else
 		$path = theme_include($source[0]);
@@ -592,6 +593,7 @@ function theme_include($file, $root = '') {
 		if(file_exists($p))
 			return $p;
 	}
+
 	return '';
 }
 
diff --git a/include/template_processor.php b/include/template_processor.php
index 74acc9c67..d2bf283e3 100755
--- a/include/template_processor.php
+++ b/include/template_processor.php
@@ -1,305 +1,307 @@
 <?php
-	require_once 'include/ITemplateEngine.php';
-
-	define ("KEY_NOT_EXISTS", '^R_key_not_Exists^');
-
-	class Template implements ITemplateEngine {
-		static $name ="internal";
-	
-		var $r;
-		var $search;
-		var $replace;
-		var $stack = array();
-		var $nodes = array();
-		var $done = false;
-		var $d = false;
-		var $lang = null;
-		var $debug=false;
-		
-		private function _preg_error(){
-			
-			switch(preg_last_error()){
-			    case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
-			    case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
-			    case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
-			    case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
+require_once 'include/ITemplateEngine.php';
+
+define ("KEY_NOT_EXISTS", '^R_key_not_Exists^');
+
+class Template implements ITemplateEngine {
+	static $name ="internal";
+
+	var $r;
+	var $search;
+	var $replace;
+	var $stack = array();
+	var $nodes = array();
+	var $done = false;
+	var $d = false;
+	var $lang = null;
+	var $debug=false;
+
+	private function _preg_error() {
+		switch(preg_last_error()) {
+			case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
+			case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
+			case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
+			case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
 // This is only valid for php > 5.3, not certain how to code around it for unit tests
-//			    case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
-			    default:
-					//die("Unknown preg error.");
-					return;
-			}
-			echo "<hr><pre>";
-			debug_print_backtrace();
-			die();
+//			case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
+			default:
+				//die("Unknown preg error.");
+				return;
 		}
-		
-		
-		private function _push_stack(){
-			$this->stack[] = array($this->r, $this->nodes);
-		}
-		private function _pop_stack(){
-			list($this->r, $this->nodes) = array_pop($this->stack);
-			
-		}
-		
-		private function _get_var($name, $retNoKey=false){
-			$keys = array_map('trim',explode(".",$name));
-			if ($retNoKey && !array_key_exists($keys[0], $this->r)) return KEY_NOT_EXISTS;
-			$val = $this->r;
-			foreach($keys as $k) {
-				$val = (isset($val[$k]) ? $val[$k] : null);
-			}
-			return template_escape($val);
+		echo "<hr><pre>";
+		debug_print_backtrace();
+		die();
+	}
+
+	private function _push_stack() {
+		$this->stack[] = array($this->r, $this->nodes);
+	}
+
+	private function _pop_stack(){
+		list($this->r, $this->nodes) = array_pop($this->stack);
+	}
+
+	private function _get_var($name, $retNoKey=false) {
+		$keys = array_map('trim',explode(".",$name));
+		if ($retNoKey && !array_key_exists($keys[0], $this->r))
+			return KEY_NOT_EXISTS;
+
+		$val = $this->r;
+		foreach($keys as $k) {
+			$val = (isset($val[$k]) ? $val[$k] : null);
 		}
-		
-		/**
-		 * IF node
-		 * 
-		 * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
-		 * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
-		 * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
-		 */
-		private function _replcb_if($args){
-			if (strpos($args[2],"==")>0){
-				list($a,$b) = array_map("trim",explode("==",$args[2]));
-				$a = $this->_get_var($a);
-				if ($b[0]=="$") $b =  $this->_get_var($b);
-				$val = ($a == $b);
-			} else if (strpos($args[2],"!=")>0){
-				list($a,$b) = array_map("trim", explode("!=",$args[2]));
-				$a = $this->_get_var($a);
-				if ($b[0]=="$") $b =  $this->_get_var($b);
-				$val = ($a != $b);
-			} else {
-				$val = $this->_get_var($args[2]);
-			}
-			$x = preg_split("|{{ *else *}}|", $args[3]);
-			return ( ($val) ? $x[0] : (isset($x[1]) ? $x[1] : ""));
+
+		return template_escape($val);
+	}
+
+	/**
+	 * IF node
+	 * \code
+	 * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
+	 * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
+	 * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
+	 * \endcode
+	 */
+	private function _replcb_if($args) {
+		if (strpos($args[2],"==")>0){
+			list($a,$b) = array_map("trim",explode("==",$args[2]));
+			$a = $this->_get_var($a);
+			if ($b[0]=="$") $b =  $this->_get_var($b);
+			$val = ($a == $b);
+		} else if (strpos($args[2],"!=")>0){
+			list($a,$b) = array_map("trim", explode("!=",$args[2]));
+			$a = $this->_get_var($a);
+			if ($b[0]=="$") $b =  $this->_get_var($b);
+			$val = ($a != $b);
+		} else {
+			$val = $this->_get_var($args[2]);
 		}
-		
-		/**
-		 * FOR node
-		 * 
-		 * {{ for <$var> as $name }}...{{ endfor }}
-		 * {{ for <$var> as $key=>$name }}...{{ endfor }}
-		 */
-		private function _replcb_for($args){
-			$m = array_map('trim', explode(" as ", $args[2]));
-			$x = explode("=>",$m[1]);
-			if (count($x) == 1) {
-				$varname = $x[0];
-				$keyname = "";
-			} else {
-				list($keyname, $varname) = $x;
-			}
-			if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
-			//$vals = $this->r[$m[0]];
-			$vals = $this->_get_var($m[0]);
-			$ret="";
-			if (!is_array($vals)) return $ret; 
-			foreach ($vals as $k=>$v){
-				$this->_push_stack();
-				$r = $this->r;
-				$r[$varname] = $v;
-				if ($keyname!='') $r[$keyname] = (($k === 0) ? '0' : $k);
-				$ret .=  $this->replace($args[3], $r);
-				$this->_pop_stack();
-			}
-			return $ret;
+		$x = preg_split("|{{ *else *}}|", $args[3]);
+
+		return ( ($val) ? $x[0] : (isset($x[1]) ? $x[1] : ""));
+	}
+
+	/**
+	 * FOR node
+	 * \code
+	 * {{ for <$var> as $name }}...{{ endfor }}
+	 * {{ for <$var> as $key=>$name }}...{{ endfor }}
+	 * \endcode
+	 */
+	private function _replcb_for($args) {
+		$m = array_map('trim', explode(" as ", $args[2]));
+		$x = explode("=>",$m[1]);
+		if (count($x) == 1) {
+			$varname = $x[0];
+			$keyname = "";
+		} else {
+			list($keyname, $varname) = $x;
 		}
+		if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
+		//$vals = $this->r[$m[0]];
+		$vals = $this->_get_var($m[0]);
+		$ret="";
+		if (!is_array($vals)) return $ret;
 
-		/**
-		 * INC node
-		 * 
-		 * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
-		 */
-		private function _replcb_inc($args){
-			if (strpos($args[2],"with")) {
-				list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
-			} else {
-				$tplfile = trim($args[2]);
-				$newctx = null;
-			}
-			
-			if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
-			
+		foreach ($vals as $k=>$v){
 			$this->_push_stack();
 			$r = $this->r;
-			if (!is_null($newctx)) {
-				list($a,$b) = array_map('trim', explode("=",$newctx));
-				$r[$a] = $this->_get_var($b); 
-			}
-			$this->nodes = Array();
-			$tpl = get_markup_template($tplfile);
-			$ret = $this->replace($tpl, $r);
+			$r[$varname] = $v;
+			if ($keyname!='') $r[$keyname] = (($k === 0) ? '0' : $k);
+			$ret .=  $this->replace($args[3], $r);
 			$this->_pop_stack();
-			return $ret;
-			
 		}
-		
-		/**
-		 * DEBUG node
-		 * 
-		 * {{ debug $var [$var [$var [...]]] }}{{ enddebug }}
-		 * 
-		 * replace node with <pre>var_dump($var, $var, ...);</pre>
-		 */
-		private function _replcb_debug($args){
-			$vars = array_map('trim', explode(" ",$args[2]));
-			$vars[] = $args[1];
-
-			$ret = "<pre>";
-			foreach ($vars as $var){
-				$ret .= htmlspecialchars(var_export( $this->_get_var($var), true ));
-				$ret .= "\n";
-			}
-			$ret .= "</pre>";
-			return $ret;
+
+		return $ret;
+	}
+
+	/**
+	 * INC node
+	 * \code
+	 * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
+	 * \endcode
+	 */
+	private function _replcb_inc($args) {
+		if (strpos($args[2],"with")) {
+			list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
+		} else {
+			$tplfile = trim($args[2]);
+			$newctx = null;
 		}
 
-		private function _replcb_node($m) {
-			$node = $this->nodes[$m[1]];
-			if (method_exists($this, "_replcb_".$node[1])){
-				$s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
-			} else {
-				$s = "";
-			}
-			$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
-			return $s;
+		if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
+
+		$this->_push_stack();
+		$r = $this->r;
+		if (!is_null($newctx)) {
+			list($a,$b) = array_map('trim', explode("=",$newctx));
+			$r[$a] = $this->_get_var($b); 
+		}
+		$this->nodes = Array();
+		$tpl = get_markup_template($tplfile);
+		$ret = $this->replace($tpl, $r);
+		$this->_pop_stack();
+
+		return $ret;
+	}
+
+	/**
+	 * DEBUG node
+	 * \code
+	 * {{ debug $var [$var [$var [...]]] }}{{ enddebug }}
+	 * \endcode
+	 * replace node with <pre>var_dump($var, $var, ...);</pre>
+	 */
+	private function _replcb_debug($args) {
+		$vars = array_map('trim', explode(" ",$args[2]));
+		$vars[] = $args[1];
+
+		$ret = "<pre>";
+		foreach ($vars as $var){
+			$ret .= htmlspecialchars(var_export( $this->_get_var($var), true ));
+			$ret .= "\n";
 		}
-						
-		private function _replcb($m){
-			//var_dump(array_map('htmlspecialchars', $m));
-			$this->done = false;	
-			$this->nodes[] = (array) $m;
-			return "||". (count($this->nodes)-1) ."||";
+		$ret .= "</pre>";
+
+		return $ret;
+	}
+
+	private function _replcb_node($m) {
+		$node = $this->nodes[$m[1]];
+		if (method_exists($this, "_replcb_".$node[1])){
+			$s = call_user_func(array($this, "_replcb_".$node[1]),  $node);
+		} else {
+			$s = "";
 		}
-		
-		private function _build_nodes($s){
-			$this->done = false;
-			while (!$this->done){
-				$this->done=true;
-				$s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
-				if ($s==Null) $this->_preg_error();
-			}
-			//({{ *else *}}[^{]*)?
-			krsort($this->nodes);
-			return $s;
+		$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
+
+		return $s;
+	}
+
+	private function _replcb($m) {
+		//var_dump(array_map('htmlspecialchars', $m));
+		$this->done = false;
+		$this->nodes[] = (array) $m;
+
+		return "||". (count($this->nodes)-1) ."||";
+	}
+
+	private function _build_nodes($s) {
+		$this->done = false;
+		while (!$this->done) {
+			$this->done=true;
+			$s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
+			if ($s==Null) $this->_preg_error();
 		}
-		
-
-		private function var_replace($s){
-			$m = array();
-			/** regexp:
-			 * \$ 						literal $
-			 * (\[)?					optional open square bracket
-			 * ([a-zA-Z0-9-_]+\.?)+		var name, followed by optional
-			 * 							dot, repeated at least 1 time
-			 * (?(1)\])					if there was opened square bracket
-			 * 							(subgrup 1), match close bracket
-			 */
-			if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(?(1)\])/', $s,$m)){
-					foreach($m[0] as $var){
-
-              $exp = str_replace(array("[", "]"), array("", ""), $var);
-                $exptks = explode("|", $exp);
-
-                $varn = $exptks[0];
-                unset($exptks[0]);
-                $val = $this->_get_var($varn, true);
-                if ($val != KEY_NOT_EXISTS) {
-                    /* run filters */
-                    /*
-                     * Filter are in form of:
-                     * filtername:arg:arg:arg
-                     *
-                     * "filtername" is function name
-                     * "arg"s are optional, var value is appended to the end
-                     *          if one "arg"==='x' , is replaced with var value
-                     *
-                     * examples:
-                     * $item.body|htmlspecialchars              // escape html chars
-                     * $item.body|htmlspecialchars|strtoupper   // escape html and uppercase result
-                     * $item.created|date:%Y %M %j              // format date (created is a timestamp)
-                     * $item.body|str_replace:cat:dog           // replace all "cat" with "dog"
-                     * $item.body|str_replace:cat:dog:x:1       // replace one "cat" with "dog"
-
-                     */
-                    foreach ($exptks as $filterstr) {
-                        $filter = explode(":", $filterstr);
-                        $filtername = $filter[0];
-                        unset($filter[0]);
-                        $valkey = array_search("x", $filter);
-                        if ($valkey === false) {
-                            $filter[] = $val;
-                        } else {
-                            $filter[$valkey] = $val;
-                        }
-                        if (function_exists($filtername)) {
-                            $val = call_user_func_array($filtername, $filter);
-                        }
-                    }
-                    $s = str_replace($var, $val, $s);
+		//({{ *else *}}[^{]*)?
+		krsort($this->nodes);
+
+		return $s;
+	}
 
+	private function var_replace($s) {
+		$m = array();
+		/** regexp:
+		 * \$ 						literal $
+		 * (\[)?					optional open square bracket
+		 * ([a-zA-Z0-9-_]+\.?)+		var name, followed by optional
+		 * 							dot, repeated at least 1 time
+		 * (?(1)\])					if there was opened square bracket
+		 * 							(subgrup 1), match close bracket
+		 */
+		if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(?(1)\])/', $s,$m)) {
+			foreach ($m[0] as $var) {
+				$exp = str_replace(array("[", "]"), array("", ""), $var);
+				$exptks = explode("|", $exp);
+
+				$varn = $exptks[0];
+				unset($exptks[0]);
+				$val = $this->_get_var($varn, true);
+				if ($val != KEY_NOT_EXISTS) {
+					/* run filters */
+					/*
+					 * Filter are in form of:
+					 * filtername:arg:arg:arg
+					 *
+					 * "filtername" is function name
+					 * "arg"s are optional, var value is appended to the end
+					 *          if one "arg"==='x' , is replaced with var value
+					 *
+					 * examples:
+					 * $item.body|htmlspecialchars              // escape html chars
+					 * $item.body|htmlspecialchars|strtoupper   // escape html and uppercase result
+					 * $item.created|date:%Y %M %j              // format date (created is a timestamp)
+					 * $item.body|str_replace:cat:dog           // replace all "cat" with "dog"
+					 * $item.body|str_replace:cat:dog:x:1       // replace one "cat" with "dog"
+					 */
+					foreach ($exptks as $filterstr) {
+						$filter = explode(":", $filterstr);
+						$filtername = $filter[0];
+						unset($filter[0]);
+						$valkey = array_search("x", $filter);
+						if ($valkey === false) {
+							$filter[] = $val;
+						} else {
+							$filter[$valkey] = $val;
+						}
+						if (function_exists($filtername)) {
+							$val = call_user_func_array($filtername, $filter);
+						}
 					}
+					$s = str_replace($var, $val, $s);
 				}
 			}
-			
-			return $s;
-		}
-		
-		private function replace($s,$r) {
-			$this->replace_macros($s, $r);
-		}
-		
-		// TemplateEngine interface
-		public function replace_macros($s, $r) {
-			$this->r = $r;
-			
-			$s = $this->_build_nodes($s);
-
-			$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
-			if ($s==Null) $this->_preg_error();
-			
-			// remove comments block
-			$s = preg_replace('/{#[^#]*#}/', "" , $s);
-			
-			$t2 = dba_timer();
-
-			// replace strings recursively (limit to 10 loops)
-			$os = ""; $count=0;
-			while(($os !== $s) && $count<10){
-				$os=$s; $count++;
-				$s = $this->var_replace($s);
-			}
-			return $s;
 		}
 
-		public function get_markup_template($file, $root='') {
-			$template_file = theme_include($file, $root);
-			if ($template_file) {
-				$content = file_get_contents($template_file);
-			}
-			return $content;		
-		}			
+		return $s;
 	}
-	
 
+	private function replace($s, $r) {
+		$this->replace_macros($s, $r);
+	}
 
+	// TemplateEngine interface
+	public function replace_macros($s, $r) {
+		$this->r = $r;
 
+		$s = $this->_build_nodes($s);
 
-function template_escape($s) {
+		$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
+		if ($s == Null)
+			$this->_preg_error();
 
-	return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
+		// remove comments block
+		$s = preg_replace('/{#[^#]*#}/', "" , $s);
 
+		//$t2 = dba_timer();
 
-}
+		// replace strings recursively (limit to 10 loops)
+		$os = "";
+		$count=0;
+		while (($os !== $s) && $count<10) {
+			$os=$s;
+			$count++;
+			$s = $this->var_replace($s);
+		}
 
-function template_unescape($s) {
+		return $s;
+	}
 
-	return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
+	public function get_markup_template($file, $root='') {
+		$template_file = theme_include($file, $root);
+		if ($template_file) {
+			$content = file_get_contents($template_file);
+		}
 
+		return $content;
+	}
+}
 
 
+function template_escape($s) {
+	return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
+}
+
+function template_unescape($s) {
+	return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
 }
diff --git a/include/text.php b/include/text.php
index 75125c606..664d5f83d 100644
--- a/include/text.php
+++ b/include/text.php
@@ -1,18 +1,26 @@
-<?php /** @file */
-
+<?php
+/**
+ * @file include/text.php
+ */
 
 require_once("include/template_processor.php");
 require_once("include/smarty.php");
 
+// random string, there are 86 characters max in text mode, 128 for hex
+// output is urlsafe
+
+define('RANDOM_STRING_HEX',  0x00 );
+define('RANDOM_STRING_TEXT', 0x01 );
+
 /**
- * This is our template processor
+ * @brief This is our template processor.
  *
  * @param string|FriendicaSmarty $s the string requiring macro substitution,
- *									or an instance of FriendicaSmarty
+ *   or an instance of FriendicaSmarty
  * @param array $r key value pairs (search => replace)
  * @return string substituted string
  */
-function replace_macros($s,$r) {
+function replace_macros($s, $r) {
 	$a = get_app();
 
 	$arr = array('template' => $s, 'params' => $r);
@@ -24,40 +32,38 @@ function replace_macros($s,$r) {
 	return $output;
 }
 
-
-// random string, there are 86 characters max in text mode, 128 for hex
-// output is urlsafe
-
-define('RANDOM_STRING_HEX',  0x00 );
-define('RANDOM_STRING_TEXT', 0x01 );
-
-
-function random_string($size = 64,$type = RANDOM_STRING_HEX) {
+/**
+ * @brief Generates a random string.
+ *
+ * @param number $size
+ * @param int $type
+ * @return string
+ */
+function random_string($size = 64, $type = RANDOM_STRING_HEX) {
 	// generate a bit of entropy and run it through the whirlpool
 	$s = hash('whirlpool', (string) rand() . uniqid(rand(),true) . (string) rand(),(($type == RANDOM_STRING_TEXT) ? true : false));
 	$s = (($type == RANDOM_STRING_TEXT) ? str_replace("\n","",base64url_encode($s,true)) : $s);
-	return(substr($s,0,$size));
+
+	return(substr($s, 0, $size));
 }
 
 /**
- * This is our primary input filter.
+ * @brief This is our primary input filter.
  *
  * The high bit hack only involved some old IE browser, forget which (IE5/Mac?)
  * that had an XSS attack vector due to stripping the high-bit on an 8-bit character
  * after cleansing, and angle chars with the high bit set could get through as markup.
- * 
+ *
  * This is now disabled because it was interfering with some legitimate unicode sequences 
  * and hopefully there aren't a lot of those browsers left. 
  *
  * Use this on any text input where angle chars are not valid or permitted
  * They will be replaced with safer brackets. This may be filtered further
- * if these are not allowed either.   
+ * if these are not allowed either.
  *
  * @param string $string Input string
  * @return string Filtered string
  */
-
-
 function notags($string) {
 
 	return(str_replace(array("<",">"), array('[',']'), $string));
@@ -105,7 +111,6 @@ function z_input_filter($channel_id,$s,$type = 'text/bbcode') {
 		return purify_html($s);
 
 	return escape_tags($s);
-
 }
 
 
@@ -114,39 +119,38 @@ function purify_html($s) {
 	require_once('library/HTMLPurifier.auto.php');
 	require_once('include/html2bbcode.php');
 
-// FIXME this function has html output, not bbcode - so safely purify these
-//	$s = html2bb_video($s);
-//	$s = oembed_html2bbcode($s);
+/**
+ * @FIXME this function has html output, not bbcode - so safely purify these
+ * $s = html2bb_video($s);
+ * $s = oembed_html2bbcode($s);
+ */
 
 	$config = HTMLPurifier_Config::createDefault();
 	$config->set('Cache.DefinitionImpl', null);
 	$config->set('Attr.EnableID', true);
 
 	$purifier = new HTMLPurifier($config);
+
 	return $purifier->purify($s);
 }
 
 
 
-
-
-// generate a string that's random, but usually pronounceable. 
-// used to generate initial passwords
-
-
 /**
- * generate a string that's random, but usually pronounceable. 
- * used to generate initial passwords
+ * @brief generate a string that's random, but usually pronounceable.
+ *
+ * Used to generate initial passwords.
+ *
  * @param int $len
  * @return string
  */
 function autoname($len) {
 
-	if($len <= 0)
+	if ($len <= 0)
 		return '';
 
 	$vowels = array('a','a','ai','au','e','e','e','ee','ea','i','ie','o','ou','u'); 
-	if(mt_rand(0,5) == 4)
+	if (mt_rand(0, 5) == 4)
 		$vowels[] = 'y';
 
 	$cons = array(
@@ -178,8 +182,8 @@ function autoname($len) {
 	$noend = array('bl', 'br', 'cl','cr','dr','fl','fr','gl','gr',
 				'kh', 'kl','kr','mn','pl','pr','rh','tr','qu','wh');
 
-	$start = mt_rand(0,2);
-	if($start == 0)
+	$start = mt_rand(0, 2);
+	if ($start == 0)
 		$table = $vowels;
 	else
 		$table = $cons;
@@ -190,33 +194,30 @@ function autoname($len) {
 		$r = mt_rand(0,count($table) - 1);
 		$word .= $table[$r];
 
-		if($table == $vowels)
-			$table = array_merge($cons,$midcons);
+		if ($table == $vowels)
+			$table = array_merge($cons, $midcons);
 		else
 			$table = $vowels;
-
 	}
 
 	$word = substr($word,0,$len);
 
-	foreach($noend as $noe) {
-		if((strlen($word) > 2) && (substr($word,-2) == $noe)) {
+	foreach ($noend as $noe) {
+		if ((strlen($word) > 2) && (substr($word,-2) == $noe)) {
 			$word = substr($word,0,-1);
 			break;
 		}
 	}
-	if(substr($word,-1) == 'q')
-		$word = substr($word,0,-1);
+	if (substr($word, -1) == 'q')
+		$word = substr($word, 0, -1);
+
 	return $word;
 }
 
 
-// escape text ($str) for XML transport
-// returns escaped text.
-
-
 /**
- * escape text ($str) for XML transport
+ * @brief escape text ($str) for XML transport
+ *
  * @param string $str
  * @return string Escaped text.
  */
@@ -228,7 +229,6 @@ function xmlify($str) {
 		$char = mb_substr($str,$x,1);
 
 		switch( $char ) {
-
 			case "\r" :
 				break;
 			case "&" :
@@ -252,9 +252,10 @@ function xmlify($str) {
 			default :
 				$buffer .= $char;
 				break;
-		}	
+		}
 	}
 	$buffer = trim($buffer);
+
 	return($buffer);
 }
 
@@ -268,10 +269,12 @@ function unxmlify($s) {
 	return $ret;
 }
 
-// convenience wrapper, reverse the operation "bin2hex"
-
-// This is a built-in function in php >= 5.4
-
+/**
+ * Convenience wrapper, reverse the operation "bin2hex"
+ * This is a built-in function in php >= 5.4
+ *
+ * @FIXME We already have php >= 5.4 requirements, so can we remove this?
+ */
 if(! function_exists('hex2bin')) {
 function hex2bin($s) {
 	if(! (is_string($s) && strlen($s)))
@@ -381,14 +384,16 @@ function alt_pager(&$a, $i, $more = '', $less = '') {
 
 }
 
-// Turn user/group ACLs stored as angle bracketed text into arrays
-
-
+/**
+ * @brief Turn user/group ACLs stored as angle bracketed text into arrays.
+ *
+ * turn string array of angle-bracketed elements into string array
+ * e.g. "<123xyz><246qyo><sxo33e>" => array(123xyz,246qyo,sxo33e);
+ *
+ * @param string $s
+ * @return array
+ */
 function expand_acl($s) {
-
-	// turn string array of angle-bracketed elements into string array
-	// e.g. "<123xyz><246qyo><sxo33e>" => array(123xyz,246qyo,sxo33e);
-
 	$ret = array();
 
 	if(strlen($s)) {
@@ -399,34 +404,41 @@ function expand_acl($s) {
 				$ret[] = $aa;
 		}
 	}
+
 	return $ret;
 }
 
-// Used to wrap ACL elements in angle brackets for storage 
-
-
+/**
+ * @brief Used to wrap ACL elements in angle brackets for storage.
+ *
+ * @param[in,out] array &$item
+ */
 function sanitise_acl(&$item) {
-	if(strlen($item))
+	if (strlen($item))
 		$item = '<' . notags(trim($item)) . '>';
 	else
 		unset($item);
 }
 
-
-// Convert an ACL array to a storable string
-
+/**
+ * @brief Convert an ACL array to a storable string.
+ *
+ * @param array $p
+ * @return array
+ */
 function perms2str($p) {
 	$ret = '';
 
-	if(is_array($p))
+	if (is_array($p))
 		$tmp = $p;
 	else
-		$tmp = explode(',',$p);
+		$tmp = explode(',', $p);
 
-	if(is_array($tmp)) {
-		array_walk($tmp,'sanitise_acl');
-		$ret = implode('',$tmp);
+	if (is_array($tmp)) {
+		array_walk($tmp, 'sanitise_acl');
+		$ret = implode('', $tmp);
 	}
+
 	return $ret;
 }
 
@@ -858,51 +870,48 @@ function valid_email($x){
 	return false;
 }
 
-
 /**
+ * @brief Replace naked text hyperlink with HTML formatted hyperlink.
  *
- * Function: linkify
- *
- * Replace naked text hyperlink with HTML formatted hyperlink
- *
+ * @param string $s
+ * @param boolean $me (optional) default false
+ * @return string
  */
-
-
-function linkify($s,$me = false) {
+function linkify($s, $me = false) {
 	$s = preg_replace("/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\@\~\#\'\%\$\!\+\,\@]*)/", (($me) ? ' <a href="$1" rel="me" >$1</a>' : ' <a href="$1" >$1</a>'), $s);
 	$s = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$s);
+
 	return($s);
 }
 
-
 /**
- * @function sslify($s)
- *    Replace media element using http url with https to a local redirector if using https locally
- * @param string $s
+ * @brief Replace media element using http url with https to a local redirector
+ *  if using https locally.
  *
  * Looks for HTML tags containing src elements that are http when we're viewing an https page
  * Typically this throws an insecure content violation in the browser. So we redirect them
  * to a local redirector which uses https and which redirects to the selected content
  *
+ * @param string $s
  * @returns string
  */
 function sslify($s) {
-	if(strpos(z_root(),'https:') === false)
+	if (strpos(z_root(),'https:') === false)
 		return $s;
 
 	$matches = null;
 	$cnt = preg_match_all("/\<(.*?)src=\"(http\:.*?)\"(.*?)\>/",$s,$matches,PREG_SET_ORDER);
-	if($cnt) {
-		foreach($matches as $match) {
-			$filename = basename( parse_url($match[2],PHP_URL_PATH) );
+	if ($cnt) {
+		foreach ($matches as $match) {
+			$filename = basename( parse_url($match[2], PHP_URL_PATH) );
 			$s = str_replace($match[2],z_root() . '/sslify/' . $filename . '?f=&url=' . urlencode($match[2]),$s);
 		}
 	}
+
 	return $s;
 }
 
 
-
 function get_poke_verbs() {
 	// index is present tense verb
 	// value is array containing past tense verb, translation of present, translation of past
@@ -1033,47 +1042,42 @@ function list_smilies() {
 
 	$params = array('texts' => $texts, 'icons' => $icons);
 	call_hooks('smilie', $params);
+
 	return $params;
 }
 /**
- * 
- * Function: smilies
- *
- * Description:
- * Replaces text emoticons with graphical images
- *
- * @Parameter: string $s
- *
- * Returns string
+ * @brief Replaces text emoticons with graphical images.
  *
  * It is expected that this function will be called using HTML text.
  * We will escape text between HTML pre and code blocks, and HTML attributes
  * (such as urls) from being processed.
- * 
+ *
  * At a higher level, the bbcode [nosmile] tag can be used to prevent this 
  * function from being executed by the prepare_text() routine when preparing
- * bbcode source for HTML display
+ * bbcode source for HTML display.
  *
+ * @param string $s
+ * @param boolean $sample (optional) default false
+ * @return string
  */
 function smilies($s, $sample = false) {
 
-	if(intval(get_config('system','no_smilies')) 
-		|| (local_channel() && intval(get_pconfig(local_channel(),'system','no_smilies'))))
+	if(intval(get_config('system', 'no_smilies')) 
+		|| (local_channel() && intval(get_pconfig(local_channel(), 'system', 'no_smilies'))))
 		return $s;
 
-	$s = preg_replace_callback('{<(pre|code)>.*?</\1>}ism','smile_shield',$s);
-	$s = preg_replace_callback('/<[a-z]+ .*?>/ism','smile_shield',$s);
+	$s = preg_replace_callback('{<(pre|code)>.*?</\1>}ism', 'smile_shield', $s);
+	$s = preg_replace_callback('/<[a-z]+ .*?>/ism', 'smile_shield', $s);
 
 	$params = list_smilies();
 	$params['string'] = $s;
 
-	if($sample) {
+	if ($sample) {
 		$s = '<div class="smiley-sample">';
-		for($x = 0; $x < count($params['texts']); $x ++) {
+		for ($x = 0; $x < count($params['texts']); $x ++) {
 			$s .= '<dl><dt>' . $params['texts'][$x] . '</dt><dd>' . $params['icons'][$x] . '</dd></dl>';
 		}
-	}
-	else {
+	} else {
 		$params['string'] = preg_replace_callback('/&lt;(3+)/','preg_heart',$params['string']);
 		$s = str_replace($params['texts'],$params['icons'],$params['string']);
 	}
@@ -1083,6 +1087,12 @@ function smilies($s, $sample = false) {
 	return $s;
 }
 
+/**
+ * @brief
+ *
+ * @param array $m
+ * @return string
+ */
 function smile_shield($m) {
 	return '<!--base64:' . base64url_encode($m[0]) . '-->';
 }
@@ -1091,16 +1101,22 @@ function smile_unshield($m) {
 	return base64url_decode($m[1]); 
 }
 
-// expand <3333 to the correct number of hearts
-
+/**
+ * @brief Expand <3333 to the correct number of hearts.
+ *
+ * @param array $x
+ */
 function preg_heart($x) {
 	$a = get_app();
-	if(strlen($x[1]) == 1)
+	if (strlen($x[1]) == 1)
 		return $x[0];
+
 	$t = '';
 	for($cnt = 0; $cnt < strlen($x[1]); $cnt ++)
 		$t .= '<img class="smiley" src="' . $a->get_baseurl() . '/images/smiley-heart.gif" alt="<3" />';
+
 	$r =  str_replace($x[0],$t,$x[0]);
+
 	return $r;
 }
 
@@ -1118,27 +1134,33 @@ function day_translate($s) {
 	return $ret;
 }
 
-
-
+/**
+ * @brief normalises a string.
+ *
+ * @param string $url
+ * @return string
+ */
 function normalise_link($url) {
-	$ret = str_replace(array('https:','//www.'), array('http:','//'), $url);
-	return(rtrim($ret,'/'));
+	$ret = str_replace(array('https:', '//www.'), array('http:', '//'), $url);
+
+	return(rtrim($ret, '/'));
 }
 
 /**
+ * @brief Compare two URLs to see if they are the same.
  *
- * Compare two URLs to see if they are the same, but ignore
- * slight but hopefully insignificant differences such as if one 
- * is https and the other isn't, or if one is www.something and 
- * the other isn't - and also ignore case differences.
+ * But ignore slight but hopefully insignificant differences such as if one
+ * is https and the other isn't, or if one is www.something and the other
+ * isn't - and also ignore case differences.
  *
- * Return true if the URLs match, otherwise false.
+ * @see normalis_link()
  *
+ * @param string $a
+ * @param string $b
+ * @return true if the URLs match, otherwise false
  */
-
-
-function link_compare($a,$b) {
-	if(strcasecmp(normalise_link($a),normalise_link($b)) === 0)
+function link_compare($a, $b) {
+	if (strcasecmp(normalise_link($a), normalise_link($b)) === 0)
 		return true;
 
 	return false;
@@ -1167,8 +1189,10 @@ function theme_attachments(&$item) {
 			$icon = '';
 			$icontype = substr($r['type'],0,strpos($r['type'],'/'));
 
-			// FIXME This should probably be a giant "if" statement in the template so that we don't have icon names
-			// embedded in php code
+			/**
+			 * @FIXME This should probably be a giant "if" statement in the
+			 * template so that we don't have icon names embedded in php code.
+			 */
 
 			switch($icontype) {
 				case 'video':
@@ -1394,11 +1418,14 @@ function prepare_body(&$item,$attach = false) {
 	return $prep_arr['html'];
 }
 
-
-// Given a text string, convert from bbcode to html and add smilie icons.
-
-
-function prepare_text($text,$content_type = 'text/bbcode') {
+/**
+ * @brief Given a text string, convert from bbcode to html and add smilie icons.
+ *
+ * @param string $text
+ * @param sting $content_type
+ * @return string
+ */
+function prepare_text($text, $content_type = 'text/bbcode') {
 
 	switch($content_type) {
 		case 'text/plain':
@@ -1451,19 +1478,21 @@ function prepare_text($text,$content_type = 'text/bbcode') {
 
 /**
  * zidify_callback() and zidify_links() work together to turn any HTML a tags with class="zrl" into zid links
- * These will typically be generated by a bbcode '[zrl]' tag. This is done inside prepare_text() rather than bbcode() 
+ * These will typically be generated by a bbcode '[zrl]' tag. This is done inside prepare_text() rather than bbcode()
  * because the latter is used for general purpose conversions and the former is used only when preparing text for
  * immediate display.
- * 
+ *
  * Issues: Currently the order of HTML parameters in the text is somewhat rigid and inflexible.
- *    We assume it looks like <a class="zrl" href="xxxxxxxxxx"> and will not work if zrl and href appear in a different order. 
+ *    We assume it looks like \<a class="zrl" href="xxxxxxxxxx"\> and will not work if zrl and href appear in a different order.
+ *
+ * @param array $match
+ * @return string
  */
-
-
 function zidify_callback($match) {
 	$is_zid = ((feature_enabled(local_channel(),'sendzid')) || (strpos($match[1],'zrl')) ? true : false);
 	$replace = '<a' . $match[1] . ' href="' . (($is_zid) ? zid($match[2]) : $match[2]) . '"';			
 	$x = str_replace($match[0],$replace,$match[0]);
+
 	return $x;
 }
 
@@ -1472,6 +1501,7 @@ function zidify_img_callback($match) {
 	$replace = '<img' . $match[1] . ' src="' . (($is_zid) ? zid($match[2]) : $match[2]) . '"';
 
 	$x = str_replace($match[0],$replace,$match[0]);
+
 	return $x;
 }
 
@@ -1479,16 +1509,17 @@ function zidify_img_callback($match) {
 function zidify_links($s) {
 	$s = preg_replace_callback('/\<a(.*?)href\=\"(.*?)\"/ism','zidify_callback',$s);
 	$s = preg_replace_callback('/\<img(.*?)src\=\"(.*?)\"/ism','zidify_img_callback',$s);
+
 	return $s;
 }
 
-
 /**
- * return atom link elements for all of our hubs
+ * @brief Return atom link elements for all of our hubs.
+ *
+ * @return string
  */
-
 function feed_hublinks() {
-	$hub = get_config('system','huburl');
+	$hub = get_config('system', 'huburl');
 
 	$hubxml = '';
 	if(strlen($hub)) {
@@ -1498,6 +1529,7 @@ function feed_hublinks() {
 				$h = trim($h);
 				if(! strlen($h))
 					continue;
+
 				$hubxml .= '<link rel="hub" href="' . xmlify($h) . '" />' . "\n" ;
 			}
 		}
@@ -2094,15 +2126,16 @@ function extra_query_args() {
 }
 
 /**
- * This function removes the tag $tag from the text $body and replaces it with 
- * the appropiate link. 
- * 
- * @param unknown_type $body the text to replace the tag in
- * @param unknown_type $access_tag  - used to return tag ACL exclusions e.g. @!foo
- * @param unknown_type $str_tags string to add the tag to
- * @param unknown_type $profile_uid
- * @param unknown_type $tag the tag to replace
+ * @brief This function removes the tag $tag from the text $body and replaces it
+ * with the appropiate link.
  *
+ * @param App $a
+ * @param[in,out] string &$body the text to replace the tag in
+ * @param[in,out] string &$access_tag used to return tag ACL exclusions e.g. @!foo
+ * @param[in,out] string &$str_tags string to add the tag to
+ * @param int $profile_uid
+ * @param string $tag the tag to replace
+ * @param boolean $diaspora default false
  * @return boolean true if replaced, false if not replaced
  */
 function handle_tag($a, &$body, &$access_tag, &$str_tags, $profile_uid, $tag, $diaspora = false) {
diff --git a/include/zot.php b/include/zot.php
index 99a787cd9..28a2e8957 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -1,110 +1,113 @@
-<?php /** @file */
-
-require_once('include/crypto.php');
-require_once('include/items.php');
-require_once('include/hubloc.php');
-
+<?php
 /**
- * Red implementation of zot protocol.
+ * @file include/zot.php
+ * @brief RedMatrix implementation of zot protocol.
  *
  * https://github.com/friendica/red/wiki/zot
  * https://github.com/friendica/red/wiki/Zot---A-High-Level-Overview
  *
  */
 
+require_once('include/crypto.php');
+require_once('include/items.php');
+require_once('include/hubloc.php');
+
 
 /**
+ * @brief Generates a unique string for use as a zot guid.
  *
- * @function zot_new_uid($channel_nick)
- *
- *    Generates a unique string for use as a zot guid using our DNS-based url, the channel nickname and some entropy.
- *    The entropy ensures uniqueness against re-installs where the same URL and nickname are chosen.
- *    NOTE: zot doesn't require this to be unique. Internally we use a whirlpool hash of this guid and the signature
- *    of this guid signed with the channel private key. This can be verified and should make the probability of
- *    collision of the verified result negligible within the constraints of our immediate universe.
+ * Generates a unique string for use as a zot guid using our DNS-based url, the
+ * channel nickname and some entropy.
+ * The entropy ensures uniqueness against re-installs where the same URL and
+ * nickname are chosen.
  *
- * @param string channel_nickname = unique nickname of controlling entity
+ * @note zot doesn't require this to be unique. Internally we use a whirlpool
+ * hash of this guid and the signature of this guid signed with the channel
+ * private key. This can be verified and should make the probability of
+ * collision of the verified result negligible within the constraints of our
+ * immediate universe.
  *
+ * @param string $channel_nick a unique nickname of controlling entity
  * @returns string
- *
  */
-
 function zot_new_uid($channel_nick) {
 	$rawstr = z_root() . '/' . $channel_nick . '.' . mt_rand();
-	return(base64url_encode(hash('whirlpool',$rawstr,true),true));
+	return(base64url_encode(hash('whirlpool', $rawstr, true), true));
 }
 
-
 /**
+ * @brief Generates a portable hash identifier for a channel.
  *
- * function make_xchan_hash($guid,$guid_sig)
- *
- * Generates a portable hash identifier for the channel identified by $guid and signed with $guid_sig
- * This ID is portable across the network but MUST be calculated locally by verifying the signature
- * and can not be trusted as an identity.
+ * Generates a portable hash identifier for the channel identified by $guid and
+ * signed with $guid_sig.
+ * This ID is portable across the network but MUST be calculated locally by
+ * verifying the signature and can not be trusted as an identity.
  *
+ * @param string $guid
+ * @param string $guid_sig
  */
-
-function make_xchan_hash($guid,$guid_sig) {
-	return base64url_encode(hash('whirlpool',$guid . $guid_sig, true));
+function make_xchan_hash($guid, $guid_sig) {
+	return base64url_encode(hash('whirlpool', $guid . $guid_sig, true));
 }
 
 /**
- * @function zot_get_hublocs($hash)
- *     Given a zot hash, return all distinct hubs.
- *     This function is used in building the zot discovery packet
- *     and therefore should only be used by channels which are defined
- *     on this hub
- * @param string $hash - xchan_hash
- * @retuns array of hubloc (hub location structures)
- *    hubloc_id          int
- *    hubloc_guid        char(255)
- *	  hubloc_guid_sig    text
- *    hubloc_hash        char(255)
- *    hubloc_addr        char(255)
- *    hubloc_flags       int
- *    hubloc_status      int
- *    hubloc_url         char(255)
- *    hubloc_url_sig     text
- *	  hubloc_host        char(255)
- *    hubloc_callback    char(255)
- *    hubloc_connect     char(255)
- *    hubloc_sitekey     text
- *    hubloc_updated     datetime
- *    hubloc_connected   datetime
+ * @brief Given a zot hash, return all distinct hubs.
+ *
+ * This function is used in building the zot discovery packet and therefore
+ * should only be used by channels which are defined on this hub.
  *
+ * @param string $hash - xchan_hash
+ * @returns array of hubloc (hub location structures)
+ *  * \b hubloc_id          int
+ *  * \b hubloc_guid        char(255)
+ *  * \b hubloc_guid_sig    text
+ *  * \b hubloc_hash        char(255)
+ *  * \b hubloc_addr        char(255)
+ *  * \b hubloc_flags       int
+ *  * \b hubloc_status      int
+ *  * \b hubloc_url         char(255)
+ *  * \b hubloc_url_sig     text
+ *  * \b hubloc_host        char(255)
+ *  * \b hubloc_callback    char(255)
+ *  * \b hubloc_connect     char(255)
+ *  * \b hubloc_sitekey     text
+ *  * \b hubloc_updated     datetime
+ *  * \b hubloc_connected   datetime
  */
-
 function zot_get_hublocs($hash) {
 
-	/** Only search for active hublocs - e.g. those that haven't been marked deleted */
+	/* Only search for active hublocs - e.g. those that haven't been marked deleted */
 
 	$ret = q("select * from hubloc where hubloc_hash = '%s' and not ( hubloc_flags & %d )>0 order by hubloc_url ",
 		dbesc($hash),
 		intval(HUBLOC_FLAGS_DELETED)
 	);
+
 	return $ret;
 }
 
 /**
+ * @brief Builds a zot notification packet.
  *
- * @function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_key = null, $secret = null)
- *    builds a zot notification packet that you can either
- *    store in the queue with a message array or call zot_zot to immediately
- *    zot it to the other side
- *
- * @param array $channel     => sender channel structure
- * @param string $type       => packet type: one of 'ping', 'pickup', 'purge', 'refresh', 'force_refresh', 'notify', 'auth_check'
- * @param array $recipients  => envelope information, array ( 'guid' => string, 'guid_sig' => string ); empty for public posts
- * @param string $remote_key => optional public site key of target hub used to encrypt entire packet
- *    NOTE: remote_key and encrypted packets are required for 'auth_check' packets, optional for all others
- * @param string $secret     => random string, required for packets which require verification/callback
- *    e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification
+ * Builds a zot notification packet that you can either store in the queue with
+ * a message array or call zot_zot to immediately zot it to the other side.
  *
+ * @param array $channel
+ *   sender channel structure
+ * @param string $type
+ *   packet type: one of 'ping', 'pickup', 'purge', 'refresh', 'force_refresh', 'notify', 'auth_check'
+ * @param array $recipients
+ *   envelope information, array ( 'guid' => string, 'guid_sig' => string ); empty for public posts
+ * @param string $remote_key
+ *   optional public site key of target hub used to encrypt entire packet
+ *   NOTE: remote_key and encrypted packets are required for 'auth_check' packets, optional for all others
+ * @param string $secret
+ *   random string, required for packets which require verification/callback
+ *   e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification
+ * @param string $extra
  * @returns string json encoded zot packet
  */
-
-function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_key = null, $secret = null, $extra = null) {
+function zot_build_packet($channel, $type = 'notify', $recipients = null, $remote_key = null, $secret = null, $extra = null) {
 
 	$data = array(
 		'type' => $type,
@@ -118,84 +121,76 @@ function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_
 		'version' => ZOT_REVISION
 	);
 
-	if($recipients) {
-		for($x = 0; $x < count($recipients); $x ++)
+	if ($recipients) {
+		for ($x = 0; $x < count($recipients); $x ++)
 			unset($recipients[$x]['hash']);
 		$data['recipients'] = $recipients;
 	}
 
-	if($secret) {
+	if ($secret) {
 		$data['secret'] = $secret; 
 		$data['secret_sig'] = base64url_encode(rsa_sign($secret,$channel['channel_prvkey']));
 	}
 
-	if($extra) {
-		foreach($extra as $k => $v)
+	if ($extra) {
+		foreach ($extra as $k => $v)
 			$data[$k] = $v;
 	}
 
-
 	logger('zot_build_packet: ' . print_r($data,true), LOGGER_DATA);
 
 	// Hush-hush ultra top-secret mode
 
-	if($remote_key) {
+	if ($remote_key) {
 		$data = crypto_encapsulate(json_encode($data),$remote_key);
 	}
 
 	return json_encode($data);
 }
 
-
 /**
- * @function: zot_zot
- * @param: string $url
- * @param: array $data
+ * @brief
+ *
+ * @see z_post_url()
  *
- * @returns: array => see z_post_url for returned data format
+ * @param string $url
+ * @param array $data
+ * @return array see z_post_url() for returned data format
  */
- 
-
-
-function zot_zot($url,$data) {
-	return z_post_url($url,array('data' => $data));
+function zot_zot($url, $data) {
+	return z_post_url($url, array('data' => $data));
 }
 
 /**
- * @function: zot_finger
+ * @brief Look up information about channel.
  *
- * Look up information about channel
- * @param: string $webbie
- *   does not have to be host qualified e.g. 'foo' is treated as 'foo@thishub'
- * @param: array $channel
+ * @param string $webbie
+ *   does not have to be host qualified e.g. 'foo' is treated as 'foo\@thishub'
+ * @param array $channel
  *   (optional), if supplied permissions will be enumerated specifically for $channel
- * @param: boolean $autofallback
+ * @param boolean $autofallback
  *   fallback/failover to http if https connection cannot be established. Default is true.
  *
- * @returns: array => see z_post_url and mod/zfinger.php
+ * @return array see z_post_url() and \ref mod/zfinger.php
  */
+function zot_finger($webbie, $channel = null, $autofallback = true) {
 
-
-function zot_finger($webbie,$channel = null,$autofallback = true) {
-
-
-	if(strpos($webbie,'@') === false) {
+	if (strpos($webbie,'@') === false) {
 		$address = $webbie;
 		$host = get_app()->get_hostname();
-	}
-	else {
+	} else {
 		$address = substr($webbie,0,strpos($webbie,'@'));
 		$host = substr($webbie,strpos($webbie,'@')+1);
 	}
 
 	$xchan_addr = $address . '@' . $host;
 
-	if((! $address) || (! $xchan_addr)) {
+	if ((! $address) || (! $xchan_addr)) {
 		logger('zot_finger: no address :' . $webbie);
 		return array('success' => false);
-	}		
+	}
 	logger('using xchan_addr: ' . $xchan_addr, LOGGER_DATA);
-	
+
 	// potential issue here; the xchan_addr points to the primary hub.
 	// The webbie we were called with may not, so it might not be found
 	// unless we query for hubloc_addr instead of xchan_addr
@@ -207,26 +202,24 @@ function zot_finger($webbie,$channel = null,$autofallback = true) {
 		intval(HUBLOC_FLAGS_PRIMARY)
 	);
 
-	if($r) {
+	if ($r) {
 		$url = $r[0]['hubloc_url'];
 
-		if($r[0]['hubloc_network'] && $r[0]['hubloc_network'] !== 'zot') {
+		if ($r[0]['hubloc_network'] && $r[0]['hubloc_network'] !== 'zot') {
 			logger('zot_finger: alternate network: ' . $webbie);
 			logger('url: '.$url.', net: '.var_export($r[0]['hubloc_network'],true), LOGGER_DATA);
 			return array('success' => false);
-		}		
-	}
-	else {
+		}
+	} else {
 		$url = 'https://' . $host;
 	}
 
-			
 	$rhs = '/.well-known/zot-info';
 	$https = ((strpos($url,'https://') === 0) ? true : false);
 
 	logger('zot_finger: ' . $address . ' at ' . $url, LOGGER_DEBUG);
 
-	if($channel) {
+	if ($channel) {
 		$postvars = array(
 			'address'    => $address,
 			'target'     => $channel['channel_guid'],
@@ -236,88 +229,85 @@ function zot_finger($webbie,$channel = null,$autofallback = true) {
 
 		$result = z_post_url($url . $rhs,$postvars);
 
-
-		if((! $result['success']) && ($autofallback)) {
-			if($https) {
+		if ((! $result['success']) && ($autofallback)) {
+			if ($https) {
 				logger('zot_finger: https failed. falling back to http');
 				$result = z_post_url('http://' . $host . $rhs,$postvars);
 			}
 		}
-	}		
-	else {
+	} else {
 		$rhs .= '?f=&address=' . urlencode($address);
 
 		$result =  z_fetch_url($url . $rhs);
-		if((! $result['success']) && ($autofallback)) {
-			if($https) {
+		if ((! $result['success']) && ($autofallback)) {
+			if ($https) {
 				logger('zot_finger: https failed. falling back to http');
 				$result = z_fetch_url('http://' . $host . $rhs);
 			}
 		}
 	}
-	
-	if(! $result['success'])
-		logger('zot_finger: no results');
 
-	return $result;	 
+	if (! $result['success'])
+		logger('zot_finger: no results');
 
+	return $result;
 }
 
 /**
- * @function: zot_refresh($them, $channel = null, $force = false)
+ * @brief Refreshes after permission changed or friending, etc.
+ *
+ * zot_refresh is typically invoked when somebody has changed permissions of a channel and they are notified
+ * to fetch new permissions via a finger/discovery operation. This may result in a new connection 
+ * (abook entry) being added to a local channel and it may result in auto-permissions being granted. 
+ *
+ * Friending in zot is accomplished by sending a refresh packet to a specific channel which indicates a
+ * permission change has been made by the sender which affects the target channel. The hub controlling
+ * the target channel does targetted discovery (a zot-finger request requesting permissions for the local
+ * channel). These are decoded here, and if necessary and abook structure (addressbook) is created to store
+ * the permissions assigned to this channel. 
+ *
+ * Initially these abook structures are created with a 'pending' flag, so that no reverse permissions are 
+ * implied until this is approved by the owner channel. A channel can also auto-populate permissions in 
+ * return and send back a refresh packet of its own. This is used by forum and group communication channels
+ * so that friending and membership in the channel's "club" is automatic. 
  *
- *   zot_refresh is typically invoked when somebody has changed permissions of a channel and they are notified
- *   to fetch new permissions via a finger/discovery operation. This may result in a new connection 
- *   (abook entry) being added to a local channel and it may result in auto-permissions being granted. 
- * 
- *   Friending in zot is accomplished by sending a refresh packet to a specific channel which indicates a
- *   permission change has been made by the sender which affects the target channel. The hub controlling
- *   the target channel does targetted discovery (a zot-finger request requesting permissions for the local
- *   channel). These are decoded here, and if necessary and abook structure (addressbook) is created to store
- *   the permissions assigned to this channel. 
- *   
- *   Initially these abook structures are created with a 'pending' flag, so that no reverse permissions are 
- *   implied until this is approved by the owner channel. A channel can also auto-populate permissions in 
- *   return and send back a refresh packet of its own. This is used by forum and group communication channels
- *   so that friending and membership in the channel's "club" is automatic. 
- * 
  * @param array $them => xchan structure of sender
  * @param array $channel => local channel structure of target recipient, required for "friending" operations
+ * @param array $force default false
  *
- * @returns boolean true if successful, else false 
+ * @returns boolean true if successful, else false
  */
+function zot_refresh($them, $channel = null, $force = false) {
 
-function zot_refresh($them,$channel = null, $force = false) {
-
-	if(array_key_exists('xchan_network',$them) && ($them['xchan_network'] !== 'zot')) {
+	if (array_key_exists('xchan_network', $them) && ($them['xchan_network'] !== 'zot')) {
 		logger('zot_refresh: not got zot. ' . $them['xchan_name']);
 		return true;
 	}
 
 	logger('zot_refresh: them: ' . print_r($them,true), LOGGER_DATA);
-	if($channel)
+	if ($channel)
 		logger('zot_refresh: channel: ' . print_r($channel,true), LOGGER_DATA);
 
 	$url = null;
 
-	if($them['hubloc_url'])
+	if ($them['hubloc_url']) {
 		$url = $them['hubloc_url'];
-	else {
+	} else {
 		$r = q("select hubloc_url, hubloc_flags from hubloc where hubloc_hash = '%s'",
 			dbesc($them['xchan_hash'])
 		);
-		if($r) {
-			foreach($r as $rr) {
-				if($rr['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY) {
+		if ($r) {
+			foreach ($r as $rr) {
+				if ($rr['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY) {
 					$url = $rr['hubloc_url'];
 					break;
 				}
 			}
-			if(! $url)			
+			if (! $url)
 				$url = $r[0]['hubloc_url'];
 		}
 	}
-	if(! $url) {
+	if (! $url) {
 		logger('zot_refresh: no url');
 		return false;
 	}
@@ -330,12 +320,13 @@ function zot_refresh($them,$channel = null, $force = false) {
 		$postvars['key']        = $channel['channel_pubkey'];
 	}
 
-	if(array_key_exists('xchan_addr',$them) && $them['xchan_addr'])
+	if (array_key_exists('xchan_addr',$them) && $them['xchan_addr'])
 		$postvars['address'] = $them['xchan_addr'];
-	if(array_key_exists('xchan_hash',$them) && $them['xchan_hash'])
+	if (array_key_exists('xchan_hash',$them) && $them['xchan_hash'])
 		$postvars['guid_hash'] = $them['xchan_hash'];
-	if(array_key_exists('xchan_guid',$them) && $them['xchan_guid'] 
+	if (array_key_exists('xchan_guid',$them) && $them['xchan_guid']
 		&& array_key_exists('xchan_guid_sig',$them) && $them['xchan_guid_sig']) {
+
 		$postvars['guid'] = $them['xchan_guid'];
 		$postvars['guid_sig'] = $them['xchan_guid_sig'];
 	}
@@ -343,19 +334,19 @@ function zot_refresh($them,$channel = null, $force = false) {
 	$rhs = '/.well-known/zot-info';
 
 	$result = z_post_url($url . $rhs,$postvars);
-	
+
 	logger('zot_refresh: zot-info: ' . print_r($result,true), LOGGER_DATA);
 
-	if($result['success']) {
+	if ($result['success']) {
 
 		$j = json_decode($result['body'],true);
 
-		if(! (($j) && ($j['success']))) {
+		if (! (($j) && ($j['success']))) {
 			logger('zot_refresh: result not decodable');
 			return false;
 		}
 
-		$x = import_xchan($j,(($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED));
+		$x = import_xchan($j, (($force) ? UPDATE_FLAGS_FORCED : UPDATE_FLAGS_UPDATED));
 
 		if(! $x['success'])
 			return false;
@@ -415,7 +406,7 @@ function zot_refresh($them,$channel = null, $force = false) {
 					$next_birthday = $r[0]['abook_dob'];
 
 				$current_abook_connected = (($r[0]['abook_flags'] & ABOOK_FLAG_UNCONNECTED) ? 0 : 1);
-		
+
 				$y = q("update abook set abook_their_perms = %d, abook_dob = '%s'
 					where abook_xchan = '%s' and abook_channel = %d 
 					and not (abook_flags & %d) > 0 ",
@@ -430,8 +421,8 @@ function zot_refresh($them,$channel = null, $force = false) {
 
 					// if they are in your address book but you aren't in theirs, and/or this does not
 					// match your current connected state setting, toggle it. 
-					// FIXME: uncoverted to postgres
-					// FIXME: when this was enabled, all contacts became unconnected. Currently disabled intentionally
+					/** @FIXME uncoverted to postgres */
+					/** @FIXME when this was enabled, all contacts became unconnected. Currently disabled intentionally */
 //					$y1 = q("update abook set abook_flags = (abook_flags ^ %d)
 //						where abook_xchan = '%s' and abook_channel = %d 
 //						and not (abook_flags & %d) limit 1",
@@ -505,7 +496,7 @@ function zot_refresh($them,$channel = null, $force = false) {
 							'type'         => NOTIFY_INTRO,
 							'from_xchan'   => $x['hash'],
 							'to_xchan'     => $channel['channel_hash'],
-							'link'		   => z_root() . '/connedit/' . $new_connection[0]['abook_id'],
+							'link'         => z_root() . '/connedit/' . $new_connection[0]['abook_id'],
 						));
 					}
 
@@ -514,7 +505,6 @@ function zot_refresh($them,$channel = null, $force = false) {
 							|| (! ($new_connection[0]['abook_flags'] & ABOOK_FLAG_PENDING)) )
 							proc_run('php','include/onepoll.php',$new_connection[0]['abook_id']); 
 					}
-
 				}
 			}
 		}
@@ -524,25 +514,22 @@ function zot_refresh($them,$channel = null, $force = false) {
 }
 
 /**
- * @function: zot_gethub
+ * @brief Look up if channel is known and previously verified.
  *
- * A guid and a url, both signed by the sender, distinguish a known sender at a known location
- * This function looks these up to see if the channel is known and therefore previously verified. 
- * If not, we will need to verify it.
+ * A guid and a url, both signed by the sender, distinguish a known sender at a
+ * known location.
+ * This function looks these up to see if the channel is known and therefore
+ * previously verified. If not, we will need to verify it.
  *
- * @param array $arr
- *    $arr must contain: 
- *       string $arr['guid'] => guid of conversant
- *       string $arr['guid_sig'] => guid signed with conversant's private key
- *       string $arr['url'] => URL of the origination hub of this communication
- *       string $arr['url_sig'] => URL signed with conversant's private key
- *  
+ * @param array $arr an assoziative array which must contain:
+ *  * \e string \b guid => guid of conversant
+ *  * \e string \b guid_sig => guid signed with conversant's private key
+ *  * \e string \b url => URL of the origination hub of this communication
+ *  * \e string \b url_sig => URL signed with conversant's private key
  *
- * @returns: array => hubloc record
+ * @returns array|null null if site is blacklisted or not found, otherwise an
+ *  array with an hubloc record
  */
-
-
-		
 function zot_gethub($arr) {
 
 	if($arr['guid'] && $arr['guid_sig'] && $arr['url'] && $arr['url_sig']) {
@@ -581,26 +568,23 @@ function zot_gethub($arr) {
 }
 
 /**
- * @function zot_register_hub($arr)
+ * @brief Registers an unknown hup.
  *
- *   A communication has been received which has an unknown (to us) sender. 
- *   Perform discovery based on our calculated hash of the sender at the origination address.
- *   This will fetch the discovery packet of the sender, which contains the public key we 
- *   need to verify our guid and url signatures.
+ * A communication has been received which has an unknown (to us) sender. 
+ * Perform discovery based on our calculated hash of the sender at the
+ * origination address. This will fetch the discovery packet of the sender,
+ * which contains the public key we need to verify our guid and url signatures.
  *
- * @param array $arr
- *    $arr must contain: 
- *       string $arr['guid'] => guid of conversant
- *       string $arr['guid_sig'] => guid signed with conversant's private key
- *       string $arr['url'] => URL of the origination hub of this communication
- *       string $arr['url_sig'] => URL signed with conversant's private key
- *  
+ * @param array $arr an assoziative array which must contain:
+ *  * \e string \b guid => guid of conversant
+ *  * \e string \b guid_sig => guid signed with conversant's private key
+ *  * \e string \b url => URL of the origination hub of this communication
+ *  * \e string \b url_sig => URL signed with conversant's private key
  *
- * @returns array => 'success' (boolean true or false)
- *                   'message' (optional error string only if success is false)
+ * @returns array an assoziative array with:
+ *  * \b success boolean true or false
+ *  * \b message (optional) error string only if success is false
  */
-
-
 function zot_register_hub($arr) {
 
 	$result = array('success' => false);
@@ -640,15 +624,14 @@ function zot_register_hub($arr) {
 			}			
 		}
 	}
+
 	return $result;
 }
 
-
 /**
- * @function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED)
- *   Takes an associative array of a fetched discovery packet and updates
+ * @brief Takes an associative array of a fetched discovery packet and updates
  *   all internal data structures which need to be updated as a result.
- * 
+ *
  * @param array $arr => json_decoded discovery packet
  * @param int $ud_flags
  *    Determines whether to create a directory update record if any changes occur, default is UPDATE_FLAGS_UPDATED
@@ -659,13 +642,12 @@ function zot_register_hub($arr) {
  *    If set [typically by update_directory_entry()] indicates a specific update table row and more particularly 
  *    contains a particular address (ud_addr) which needs to be updated in that table.
  *
- * @returns array =>  'success' (boolean true or false)
- *                    'message' (optional error string only if success is false)
+ * @return associative array
+ *   * \e boolean \b success boolean true or false
+ *   * \e string \b message (optional) error string only if success is false
  */
-
 function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 
-
 	call_hooks('import_xchan', $arr);
 
 	$ret = array('success' => false);
@@ -700,11 +682,11 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 
 	$r = q("select * from xchan where xchan_hash = '%s' limit 1",
 		dbesc($xchan_hash)
-	);	
+	);
 
 	if(! array_key_exists('connect_url', $arr))
-		$arr['connect_url'] = '';		
-			
+		$arr['connect_url'] = '';
+
 	if(strpos($arr['address'],'/') !== false)
 		$arr['address'] = substr($arr['address'],0,strpos($arr['address'],'/'));
 
@@ -713,14 +695,13 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 			$import_photos = true;
 
 		// if we import an entry from a site that's not ours and either or both of us is off the grid - hide the entry.
-		// TODO: check if we're the same directory realm, which would mean we are allowed to see it
+		/** @TODO: check if we're the same directory realm, which would mean we are allowed to see it */
 
 		$dirmode = get_config('system','directory_mode'); 
 
 		if((($arr['site']['directory_mode'] === 'standalone') || ($dirmode & DIRECTORY_MODE_STANDALONE)) && ($arr['site']['url'] != z_root()))
 			$arr['searchable'] = false;
 
-
 		$hidden = (1 - intval($arr['searchable']));
 
 		// Be careful - XCHAN_FLAGS_HIDDEN should evaluate to 1
@@ -770,11 +751,9 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 			$what .= 'xchan ';
 			$changed = true;
 		}
-	}
-	else {
+	} else {
 		$import_photos = true;
 
-
 		if((($arr['site']['directory_mode'] === 'standalone') || ($dirmode & DIRECTORY_MODE_STANDALONE))
 && ($arr['site']['url'] != z_root()))
 			$arr['searchable'] = false;
@@ -789,7 +768,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 			$new_flags |= XCHAN_FLAGS_SELFCENSORED;
 		if(array_key_exists('deleted',$arr) && $arr['deleted'])
 			$new_flags |= XCHAN_FLAGS_DELETED;
-		
+
 		$x = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_mimetype,
 				xchan_photo_l, xchan_addr, xchan_url, xchan_connurl, xchan_follow, xchan_connpage, xchan_name, xchan_network, xchan_photo_date, xchan_name_date, xchan_flags)
 				values ( '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d) ",
@@ -813,11 +792,9 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 
 		$what .= 'new_xchan';
 		$changed = true;
+	}
 
-	}				
-
-
-	if($import_photos) {
+	if ($import_photos) {
 
 		require_once('include/photo/photo_driver.php');
 
@@ -826,9 +803,9 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 		$local = q("select channel_account_id, channel_id from channel where channel_hash = '%s' limit 1",
 			dbesc($xchan_hash)
 		);
-		if($local) {
-			$ph = z_fetch_url($arr['photo'],true);
-			if($ph['success']) {
+		if ($local) {
+			$ph = z_fetch_url($arr['photo'], true);
+			if ($ph['success']) {
 				import_channel_photo($ph['body'], $arr['photo_mimetype'], $local[0]['channel_account_id'],$local[0]['channel_id']);
 				// reset the names in case they got messed up when we had a bug in this function
 				$photos = array(
@@ -839,12 +816,11 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 					false
 				);
 			}
+		} else {
+			$photos = import_profile_photo($arr['photo'], $xchan_hash);
 		}
-		else {
-			$photos = import_profile_photo($arr['photo'],$xchan_hash);
-		}
-		if($photos) {
-			if($photos[4]) {
+		if ($photos) {
+			if ($photos[4]) {
 				// importing the photo failed somehow. Leave the photo_date alone so we can try again at a later date.
 				// This often happens when somebody joins the matrix with a bad cert. 
 				$r = q("update xchan set xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
@@ -855,8 +831,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 					dbesc($photos[3]),
 					dbesc($xchan_hash)
 				);
-			}
-			else {
+			} else {
 				$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
 					where xchan_hash = '%s'",
 					dbescdate(datetime_convert('UTC','UTC',$arr['photo_updated'])),
@@ -875,8 +850,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 	// what we are missing for true hub independence is for any changes in the primary hub to 
 	// get reflected not only in the hublocs, but also to update the URLs and addr in the appropriate xchan
 
-
-	$s = sync_locations($arr,$arr);
+	$s = sync_locations($arr, $arr);
 
 	if($s) {
 		if($s['change_message'])
@@ -915,8 +889,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 				$what .= 'profile ';
 				$changed = true;
 			}
-		}
-		else {
+		} else {
 			logger('import_xchan: profile not available - hiding');
 			// they may have made it private
 			$r = q("delete from xprof where xprof_hash = '%s'",
@@ -935,7 +908,6 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 			$changed = true;
 		}
 	}
-	
 
 	if(($changed) || ($ud_flags == UPDATE_FLAGS_FORCED)) {
 		$guid = random_string() . '@' . get_app()->get_hostname();		
@@ -956,60 +928,52 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 		$ret['hash'] = $xchan_hash;
 	}
 
-
-
 	logger('import_xchan: result: ' . print_r($ret,true), LOGGER_DATA);
 	return $ret;
 }
 
 /**
- * @function zot_process_response($hub,$arr,$outq) {
- *    Called immediately after sending a zot message which is using queue processing
- *    Updates the queue item according to the response result and logs any information
- *    returned to aid communications troubleshooting.
+ * @brief Called immediately after sending a zot message which is using queue processing.
+ *
+ * Updates the queue item according to the response result and logs any information
+ * returned to aid communications troubleshooting.
  *
  * @param string $hub - url of site we just contacted
  * @param array $arr - output of z_post_url()
  * @param array $outq - The queue structure attached to this request
- *
- * @returns nothing
  */
+function zot_process_response($hub, $arr, $outq) {
 
-
-function zot_process_response($hub,$arr,$outq) {
-
-	if(! $arr['success']) {
+	if (! $arr['success']) {
 		logger('zot_process_response: failed: ' . $hub);
 		return;
 	}
 
-	$x = json_decode($arr['body'],true);
+	$x = json_decode($arr['body'], true);
 
-	if(! $x) {
+	if (! $x) {
 		logger('zot_process_response: No json from ' . $hub);
 		logger('zot_process_response: headers: ' . print_r($arr['header'],true), LOGGER_DATA);
 	}
 
 	// update the timestamp for this site
 
-	$r = q("update site set site_update = '%s' where site_url = '%s'",
+	q("update site set site_update = '%s' where site_url = '%s'",
 		dbesc(datetime_convert()),
 		dbesc(dirname($hub))
 	);
 
-
 	// synchronous message types are handled immediately
 	// async messages remain in the queue until processed.
 
-	if(intval($outq['outq_async'])) {
-		$r = q("update outq set outq_delivered = 1, outq_updated = '%s' where outq_hash = '%s' and outq_channel = %d",
+	if (intval($outq['outq_async'])) {
+		q("update outq set outq_delivered = 1, outq_updated = '%s' where outq_hash = '%s' and outq_channel = %d",
 			dbesc(datetime_convert()),
 			dbesc($outq['outq_hash']),
 			intval($outq['outq_channel'])
 		);
-	}
-	else {
-		$r = q("delete from outq where outq_hash = '%s' and outq_channel = %d",
+	} else {
+		q("delete from outq where outq_hash = '%s' and outq_channel = %d",
 			dbesc($outq['outq_hash']),
 			intval($outq['outq_channel'])
 		);
@@ -1019,19 +983,20 @@ function zot_process_response($hub,$arr,$outq) {
 }
 
 /**
- * @function zot_fetch($arr)
+ * @brief
+ *
+ * We received a notification packet (in mod/post.php) that a message is waiting for us, and we've verified the sender.
+ * Now send back a pickup message, using our message tracking ID ($arr['secret']), which we will sign with our site private key.
+ * The entire pickup message is encrypted with the remote site's public key. 
+ * If everything checks out on the remote end, we will receive back a packet containing one or more messages,
+ * which will be processed and delivered before this function ultimately returns.
+ *
+ * @see zot_import()
  *
- *     We received a notification packet (in mod/post.php) that a message is waiting for us, and we've verified the sender.
- *     Now send back a pickup message, using our message tracking ID ($arr['secret']), which we will sign with our site private key.
- *     The entire pickup message is encrypted with the remote site's public key. 
- *     If everything checks out on the remote end, we will receive back a packet containing one or more messages,
- *     which will be processed and delivered before this function ultimately returns.
- *   
  * @param array $arr
  *     decrypted and json decoded notify packet from remote site
+ * @return array from zot_import()
  */
- 
-
 function zot_fetch($arr) {
 
 	logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA);
@@ -1054,31 +1019,36 @@ function zot_fetch($arr) {
 	);
 
 	$datatosend = json_encode(crypto_encapsulate(json_encode($data),$ret_hub['hubloc_sitekey']));
-	
+
 	$fetch = zot_zot($url,$datatosend);
 	$result = zot_import($fetch, $arr['sender']['url']);
+
 	return $result;
 }
 
 /**
- * @function zot_import
+ * @brief Process incoming array of messages.
  * 
  * Process an incoming array of messages which were obtained via pickup, and 
  * import, update, delete as directed.
- * 
- * @param array $arr => 'pickup' structure returned from remote site
- * @param string $sender_url => the url specified by the sender in the initial communication
- *       we will verify the sender and url in each returned message structure and also verify
- *       that all the messages returned match the site url that we are currently processing.
- * 
- * The message types handled here are 'activity' (e.g. posts), 'mail' , 'profile', 'location', 
- * and 'channel_sync'
- * 
- * @returns array => array ( [0] => string $channel_hash, [1] => string $delivery_status, [2] => string $address )
- *    suitable for logging remotely, enumerating the processing results of each message/recipient combination.
- * 
+ *
+ * The message types handled here are 'activity' (e.g. posts), 'mail' ,
+ * 'profile', 'location' and 'channel_sync'.
+ *
+ * @param array $arr
+ *  'pickup' structure returned from remote site
+ * @param string $sender_url
+ *  the url specified by the sender in the initial communication.
+ *  We will verify the sender and url in each returned message structure and
+ *  also verify that all the messages returned match the site url that we are
+ *  currently processing.
+ *
+ * @returns array
+ * suitable for logging remotely, enumerating the processing results of each message/recipient combination
+ *  * [0] => \e string $channel_hash
+ *  * [1] => \e string $delivery_status
+ *  * [2] => \e string $address
  */
-
 function zot_import($arr, $sender_url) {
 
 	$data = json_decode($arr['body'],true);
@@ -1168,7 +1138,7 @@ function zot_import($arr, $sender_url) {
 					}
 				}
 
-				logger('public post');				
+				logger('public post');
 
 				// Public post. look for any site members who are or may be accepting posts from this sender
 				// and who are allowed to see them based on the sender's permissions
@@ -1190,7 +1160,6 @@ function zot_import($arr, $sender_url) {
 						$i['message']['flags'] = array();
 					if(! in_array('private',$i['message']['flags']))
 						$i['message']['flags'][] = 'private';
-
 				}
 			}
 
@@ -1215,8 +1184,8 @@ function zot_import($arr, $sender_url) {
 				logger('zot_import: no deliveries on this site');
 				continue;
 			}
-							
-			if($i['message']) { 
+
+			if($i['message']) {
 				if($i['message']['type'] === 'activity') {
 					$arr = get_item_elements($i['message']);
 
@@ -1230,7 +1199,6 @@ function zot_import($arr, $sender_url) {
 
 					$relay = ((array_key_exists('flags',$i['message']) && in_array('relay',$i['message']['flags'])) ? true : false);
 					$result = process_delivery($i['notify']['sender'],$arr,$deliveries,$relay,false,$message_request);
-
 				}
 				elseif($i['message']['type'] === 'mail') {
 					$arr = get_mail_elements($i['message']);
@@ -1238,9 +1206,7 @@ function zot_import($arr, $sender_url) {
 					logger('Mail received: ' . print_r($arr,true), LOGGER_DATA);
 					logger('Mail recipients: ' . print_r($deliveries,true), LOGGER_DATA);
 
-
 					$result = process_mail_delivery($i['notify']['sender'],$arr,$deliveries);
-
 				}
 				elseif($i['message']['type'] === 'profile') {
 					$arr = get_profile_elements($i['message']);
@@ -1249,9 +1215,7 @@ function zot_import($arr, $sender_url) {
 					logger('Profile recipients: ' . print_r($deliveries,true), LOGGER_DATA);
 
 					$result = process_profile_delivery($i['notify']['sender'],$arr,$deliveries);
-
 				}
-
 				elseif($i['message']['type'] === 'channel_sync') {
 					// $arr = get_channelsync_elements($i['message']);
 
@@ -1270,31 +1234,34 @@ function zot_import($arr, $sender_url) {
 					
 					$result = process_location_delivery($i['notify']['sender'],$arr,$deliveries);
 				}
-
 			}
 			if($result){
-				$return = array_merge($return,$result);
+				$return = array_merge($return, $result);
 			}
 		}
 	}
 
 	return $return;
-
 }
 
 
 // A public message with no listed recipients can be delivered to anybody who
-// has PERMS_NETWORK for that type of post, PERMS_AUTHED (in-network senders are 
+// has PERMS_NETWORK for that type of post, PERMS_AUTHED (in-network senders are
 // by definition authenticated) or PERMS_SITE and is one the same
 // site, or PERMS_SPECIFIC and the sender is a contact who is granted 
 // permissions via their connection permissions in the address book.
 // Here we take a given message and construct a list of hashes of everybody
-// on the site that we should try and deliver to.  
+// on the site that we should try and deliver to.
 // Some of these will be rejected, but this gives us a place to start.
 
+/**
+ * @brief
+ *
+ * @param array $msg
+ * @return NULL|array
+ */
 function public_recips($msg) {
 
-
 	require_once('include/identity.php');
 
 	$check_mentions = false;
@@ -1363,7 +1330,6 @@ function public_recips($msg) {
 					or (  " . $col . " & " . intval(PERMS_PUBLIC) . ") > 0 
 					or (  " . $col . " & " . intval(PERMS_AUTHED) . ") > 0 ) ";
 
-
 	$r = q("select channel_hash as hash from channel $sql or channel_hash = '%s' 
 		and ( channel_pageflags & " . intval(PAGE_REMOVED) . " ) = 0 ",
 		dbesc($msg['notify']['sender']['hash'])
@@ -1514,7 +1480,6 @@ function allowed_public_recips($msg) {
 		return $results;
 	}
 
-
 	return array();
 }
 
@@ -1544,7 +1509,6 @@ function process_delivery($sender,$arr,$deliveries,$relay,$public = false,$reque
 			continue;
 		}
 
-
 		$channel = $r[0];
 
 		// allow public postings to the sys channel regardless of permissions, but not
@@ -1763,7 +1727,6 @@ function remove_community_tag($sender,$arr,$uid) {
 		return;
 
 	logger('remove_community_tag: invoked');
- 
 
 	if(! get_pconfig($uid,'system','blocktags')) {
 		logger('remove_community tag: permission denied.');
@@ -1806,8 +1769,8 @@ function remove_community_tag($sender,$arr,$uid) {
 		logger('remove_community_tag: no parent message');
 		return;
 	}
-	
-	$x = q("delete from term where uid = %d and oid = %d and otype = %d and type = %d and term = '%s' and url = '%s'",
+
+	q("delete from term where uid = %d and oid = %d and otype = %d and type = %d and term = '%s' and url = '%s'",
 		intval($uid),
 		intval($r[0]['id']),
 		intval(TERM_OBJ_POST),
@@ -1815,8 +1778,6 @@ function remove_community_tag($sender,$arr,$uid) {
 		dbesc($i['object']['title']),
 		dbesc(get_rel_link($i['object']['link'],'alternate'))
 	);
-
-	return;
 }
 
 function update_imported_item($sender,$item,$uid) {
@@ -1826,12 +1787,20 @@ function update_imported_item($sender,$item,$uid) {
 		logger('update_imported_item: failed: ' . $x['message']);
 	else
 		logger('update_imported_item');
-
 }
 
-function delete_imported_item($sender,$item,$uid,$relay) {
+/**
+ * @brief Deletes an imported item.
+ *
+ * @param array $sender
+ * @param array $item
+ * @param int $uid
+ * @param unknown $relay
+ * @return boolean|int post_id
+ */
+function delete_imported_item($sender, $item, $uid, $relay) {
 
-	logger('delete_imported_item invoked',LOGGER_DEBUG);
+	logger('delete_imported_item invoked', LOGGER_DEBUG);
 
 	$ownership_valid = false;
 	$item_found = false;
@@ -1841,13 +1810,13 @@ function delete_imported_item($sender,$item,$uid,$relay) {
 		dbesc($item['mid']),
 		intval($uid)
 	);
-	if($r) {
-		if($r[0]['author_xchan'] === $sender['hash'] || $r[0]['owner_xchan'] === $sender['hash'] || $r[0]['source_xchan'] === $sender['hash'])
+	if ($r) {
+		if ($r[0]['author_xchan'] === $sender['hash'] || $r[0]['owner_xchan'] === $sender['hash'] || $r[0]['source_xchan'] === $sender['hash'])
 			$ownership_valid = true;
+
 		$post_id = $r[0]['id'];
 		$item_found = true;
-	}
-	else {
+	} else {
 
 		// perhaps the item is still in transit and the delete notification got here before the actual item did. Store it with the deleted flag set.
 		// item_store() won't try to deliver any notifications or start delivery chains if this flag is set. 
@@ -1855,22 +1824,24 @@ function delete_imported_item($sender,$item,$uid,$relay) {
 		// But this will ensure that if the (undeleted) original post comes in at a later date, we'll reject it because it will have an older timestamp.  
 
 		logger('delete received for non-existent item - storing item data.');
-		if($arr['author_xchan'] === $sender['hash'] || $arr['owner_xchan'] === $sender['hash'] || $arr['source_xchan'] === $sender['hash']) {
+
+		/** @BUG $arr is undefined here, so this is dead code */
+		if ($arr['author_xchan'] === $sender['hash'] || $arr['owner_xchan'] === $sender['hash'] || $arr['source_xchan'] === $sender['hash']) {
 			$ownership_valid = true;
 			$item_result = item_store($arr);
 			$post_id = $item_result['item_id'];
 		}
 	}
 
-	if($ownership_valid == false) {
+	if ($ownership_valid === false) {
 		logger('delete_imported_item: failed: ownership issue');
 		return false;
 	}
 
-	if($item_found) {
-		if($r[0]['item_restrict'] & ITEM_DELETED) {
+	if ($item_found) {
+		if ($r[0]['item_restrict'] & ITEM_DELETED) {
 			logger('delete_imported_item: item was already deleted');
-			if(! $relay)
+			if (! $relay)
 				return false;
 
 			// This is a bit hackish, but may have to suffice until the notification/delivery loop is optimised
@@ -1879,9 +1850,9 @@ function delete_imported_item($sender,$item,$uid,$relay) {
 			// code path downstream can relay it again (causing a loop). Since it's already gone it's not coming
 			// back, and we aren't going to (or shouldn't at any rate) delete it again in the future - so losing
 			// this information from the metadata should have no other discernible impact. 
-			
-			if(($r[0]['id'] != $r[0]['parent']) && ($r[0]['item_flags'] & ITEM_ORIGIN)) {
-				$x = q("update item set item_flags = %d where id = %d and uid = %d",
+
+			if (($r[0]['id'] != $r[0]['parent']) && ($r[0]['item_flags'] & ITEM_ORIGIN)) {
+				q("update item set item_flags = %d where id = %d and uid = %d",
 					intval($r[0]['item_flags'] ^ ITEM_ORIGIN),
 					intval($r[0]['id']),
 					intval($r[0]['uid'])
@@ -1889,14 +1860,13 @@ function delete_imported_item($sender,$item,$uid,$relay) {
 			}
 		} 
 
-		
 		require_once('include/items.php');
 
 		// Use phased deletion to set the deleted flag, call both tag_deliver and the notifier to notify downstream channels
 		// and then clean up after ourselves with a cron job after several days to do the delete_item_lowlevel() (DROPITEM_PHASE2).
 
-		drop_item($post_id,false, DROPITEM_PHASE1);
-		tag_deliver($uid,$post_id);
+		drop_item($post_id, false, DROPITEM_PHASE1);
+		tag_deliver($uid, $post_id);
 	}
 
 	return $post_id;
@@ -1904,17 +1874,13 @@ function delete_imported_item($sender,$item,$uid,$relay) {
 
 function process_mail_delivery($sender,$arr,$deliveries) {
 
-
 	$result = array();
 
-
 	if($sender['hash'] != $arr['from_xchan']) {
 		logger('process_mail_delivery: sender is not mail author');
 		return;
 	}
 
-
-	
 	foreach($deliveries as $d) {
 		$r = q("select * from channel where channel_hash = '%s' limit 1",
 			dbesc($d['hash'])
@@ -1946,7 +1912,7 @@ function process_mail_delivery($sender,$arr,$deliveries) {
 				$result[] = array($d['hash'],'mail recalled',$channel['channel_name'],$arr['mid']);
 				logger('mail_recalled');
 			}
-			else {				
+			else {
 				$result[] = array($d['hash'],'duplicate mail received',$channel['channel_name'],$arr['mid']);
 				logger('duplicate mail received');
 			}
@@ -1974,7 +1940,6 @@ function process_rating_delivery($sender,$arr) {
 		dbesc($sender['hash'])
 	);
 
-
 	if((! $z) || (! rsa_verify($arr['target'] . '.' . $arr['rating'] . '.' . $arr['rating_text'], base64url_decode($arr['signature']),$z[0]['xchan_pubkey']))) {
 		logger('failed to verify rating');
 		return;
@@ -2012,7 +1977,6 @@ function process_rating_delivery($sender,$arr) {
 		);
 		logger('rating created');
 	}
-	return;
 }
 
 
@@ -2080,7 +2044,6 @@ function sync_locations($sender,$arr,$absolute = false) {
 				continue;
 			}
 
-
 			for($x = 0; $x < count($xisting); $x ++) {
 				if(($xisting[$x]['hubloc_url'] === $location['url']) 
 					&& ($xisting[$x]['hubloc_sitekey'] === $location['sitekey'])) {
@@ -2250,7 +2213,7 @@ function sync_locations($sender,$arr,$absolute = false) {
 				);
 				if($r)
 					hubloc_change_primary($r[0]);
-			}		
+			}
 		}
 
 		// get rid of any hubs we have for this channel which weren't reported.
@@ -2275,17 +2238,23 @@ function sync_locations($sender,$arr,$absolute = false) {
 	$ret['changed'] = $changed;
 
 	return $ret;
-
 }
 
-
+/**
+ * @brief Returns an array with all known distinct hubs for this channel.
+ *
+ * @see zot_get_hublocs()
+ * @param array $channel an assoziative array which must contain
+ *  * \e string \b channel_hash the hash of the channel
+ * @return array an array with assoziated arrays
+ */
 function zot_encode_locations($channel) {
 	$ret = array();
 
 	$x = zot_get_hublocs($channel['channel_hash']);
-	if($x && count($x)) {
-		foreach($x as $hub) {
-			if(! ($hub['hubloc_flags'] & HUBLOC_FLAGS_UNVERIFIED)) {
+	if ($x && count($x)) {
+		foreach ($x as $hub) {
+			if (! ($hub['hubloc_flags'] & HUBLOC_FLAGS_UNVERIFIED)) {
 				$ret[] = array(
 					'host'     => $hub['hubloc_host'],
 					'address'  => $hub['hubloc_addr'],
@@ -2299,24 +2268,25 @@ function zot_encode_locations($channel) {
 			}
 		}
 	}
+
 	return $ret;
 }
 
 
-
-
-
-/*
- * @function import_directory_profile
+/**
+ * @brief Imports a directory profile.
  * 
- * @returns boolean $updated if something changed
- *
+ * @param string $hash
+ * @param array $profile
+ * @param string $addr
+ * @param number $ud_flags
+ * @param number $suppress_update default 0
+ * @return boolean $updated if something changed
  */
-
-function import_directory_profile($hash,$profile,$addr,$ud_flags = UPDATE_FLAGS_UPDATED, $suppress_update = 0) {
+function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLAGS_UPDATED, $suppress_update = 0) {
 
 	logger('import_directory_profile', LOGGER_DEBUG);
-	if(! $hash)
+	if (! $hash)
 		return false;
 
 	$arr = array();
@@ -2337,11 +2307,11 @@ function import_directory_profile($hash,$profile,$addr,$ud_flags = UPDATE_FLAGS_
 	$arr['xprof_hometown']     = (($profile['hometown'])    ? htmlspecialchars($profile['hometown'],    ENT_COMPAT,'UTF-8',false) : '');
 
 	$clean = array();
-	if(array_key_exists('keywords',$profile) and is_array($profile['keywords'])) {
+	if (array_key_exists('keywords', $profile) and is_array($profile['keywords'])) {
 		import_directory_keywords($hash,$profile['keywords']);
-		foreach($profile['keywords'] as $kw) {
-			$kw = trim(htmlspecialchars($kw,ENT_COMPAT,'UTF-8',false));
-			$kw = trim($kw,',');
+		foreach ($profile['keywords'] as $kw) {
+			$kw = trim(htmlspecialchars($kw,ENT_COMPAT, 'UTF-8', false));
+			$kw = trim($kw, ',');
 			$clean[] = $kw;
 		}
 	}
@@ -2352,48 +2322,47 @@ function import_directory_profile($hash,$profile,$addr,$ud_flags = UPDATE_FLAGS_
 	// These are not translated, so the German "erwachsenen" keyword will not censor the directory profile. Only the English form - "adult".   
 
 
-	if(in_arrayi('nsfw',$clean) || in_arrayi('adult',$clean)) {
+	if (in_arrayi('nsfw', $clean) || in_arrayi('adult', $clean)) {
 		q("update xchan set xchan_flags = (xchan_flags | %d) where xchan_hash = '%s'",
 			intval(XCHAN_FLAGS_SELFCENSORED),
 			dbesc($hash)
 		);
 	}
 
-
 	$r = q("select * from xprof where xprof_hash = '%s' limit 1",
 		dbesc($hash)
 	);
-	
-	if($arr['xprof_age'] > 150) 
+
+	if ($arr['xprof_age'] > 150) 
 		$arr['xprof_age'] = 150;
-	if($arr['xprof_age'] < 0)
+	if ($arr['xprof_age'] < 0)
 		$arr['xprof_age'] = 0;
-	
-	if($r) {
+
+	if ($r) {
 		$update = false;
-		foreach($r[0] as $k => $v) {
-			if((array_key_exists($k,$arr)) && ($arr[$k] != $v)) {
+		foreach ($r[0] as $k => $v) {
+			if ((array_key_exists($k,$arr)) && ($arr[$k] != $v)) {
 				logger('import_directory_profile: update ' . $k . ' => ' . $arr[$k]);
 				$update = true;
 				break;
 			}
 		}
-		if($update) {
-			$x = q("update xprof set 
+		if ($update) {
+			q("update xprof set 
 				xprof_desc = '%s', 
 				xprof_dob = '%s', 
-				xprof_age = %d,
+				xprof_age = %d, 
 				xprof_gender = '%s', 
 				xprof_marital = '%s', 
 				xprof_sexual = '%s', 
 				xprof_locale = '%s', 
 				xprof_region = '%s', 
 				xprof_postcode = '%s', 
-				xprof_country = '%s',
-				xprof_about = '%s',
-				xprof_homepage = '%s',
-				xprof_hometown = '%s',
-				xprof_keywords = '%s'
+				xprof_country = '%s', 
+				xprof_about = '%s', 
+				xprof_homepage = '%s', 
+				xprof_hometown = '%s', 
+				xprof_keywords = '%s' 
 				where xprof_hash = '%s'",
 				dbesc($arr['xprof_desc']),
 				dbesc($arr['xprof_dob']),
@@ -2412,11 +2381,10 @@ function import_directory_profile($hash,$profile,$addr,$ud_flags = UPDATE_FLAGS_
 				dbesc($arr['xprof_hash'])
 			);
 		}
-	}
-	else {
+	} else {
 		$update = true;
 		logger('import_directory_profile: new profile ');
-		$x = q("insert into xprof (xprof_hash, xprof_desc, xprof_dob, xprof_age, xprof_gender, xprof_marital, xprof_sexual, xprof_locale, xprof_region, xprof_postcode, xprof_country, xprof_about, xprof_homepage, xprof_hometown, xprof_keywords) values ('%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
+		q("insert into xprof (xprof_hash, xprof_desc, xprof_dob, xprof_age, xprof_gender, xprof_marital, xprof_sexual, xprof_locale, xprof_region, xprof_postcode, xprof_country, xprof_about, xprof_homepage, xprof_hometown, xprof_keywords) values ('%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
 			dbesc($arr['xprof_hash']),
 			dbesc($arr['xprof_desc']),
 			dbesc($arr['xprof_dob']),
@@ -2438,8 +2406,9 @@ function import_directory_profile($hash,$profile,$addr,$ud_flags = UPDATE_FLAGS_
 	$d = array('xprof' => $arr, 'profile' => $profile, 'update' => $update);
 	call_hooks('import_directory_profile', $d);
 
-	if(($d['update']) && (! $suppress_update))
+	if (($d['update']) && (! $suppress_update))
 		update_modtime($arr['xprof_hash'],random_string() . '@' . get_app()->get_hostname(), $addr, $ud_flags);
+
 	return $d['update'];
 }
 
@@ -2528,7 +2497,6 @@ function import_site($arr,$pubkey) {
 	$site_directory = 0;
 	if($arr['directory_mode'] == 'normal')
 		$site_directory = DIRECTORY_MODE_NORMAL;
-
 	if($arr['directory_mode'] == 'primary')
 		$site_directory = DIRECTORY_MODE_PRIMARY;
 	if($arr['directory_mode'] == 'secondary')
@@ -2536,9 +2504,6 @@ function import_site($arr,$pubkey) {
 	if($arr['directory_mode'] == 'standalone')
 		$site_directory = DIRECTORY_MODE_STANDALONE;
 
-
-
-
 	$register_policy = 0;
 	if($arr['register_policy'] == 'closed')
 		$register_policy = REGISTER_CLOSED;
@@ -2569,16 +2534,16 @@ function import_site($arr,$pubkey) {
 		if(! $x['success'])
 			$access_policy = ACCESS_PRIVATE;
 	}
-	
+
 	$directory_url = htmlspecialchars($arr['directory_url'],ENT_COMPAT,'UTF-8',false);
 	$url = htmlspecialchars(strtolower($arr['url']),ENT_COMPAT,'UTF-8',false);
 	$sellpage = htmlspecialchars($arr['sellpage'],ENT_COMPAT,'UTF-8',false);
 	$site_location = htmlspecialchars($arr['location'],ENT_COMPAT,'UTF-8',false);
 	$site_realm = htmlspecialchars($arr['realm'],ENT_COMPAT,'UTF-8',false);
 
-	// You can have one and only one primary directory per realm. 
+	// You can have one and only one primary directory per realm.
 	// Downgrade any others claiming to be primary. As they have
-	// flubbed up this badly already, don't let them be directory servers at all. 
+	// flubbed up this badly already, don't let them be directory servers at all.
 
 	if(($site_directory === DIRECTORY_MODE_PRIMARY) 
 		&& ($site_realm === get_directory_realm()) 
@@ -2586,7 +2551,6 @@ function import_site($arr,$pubkey) {
 		$site_directory = DIRECTORY_MODE_NORMAL;
 	} 
 
-
 	if($exists) {
 		if(($siterecord['site_flags'] != $site_directory)
 			|| ($siterecord['site_access'] != $access_policy)
@@ -2644,11 +2608,9 @@ function import_site($arr,$pubkey) {
 	}
 
 	return $update;
-
 }
 
 
-
 /**
  * Send a zot packet to all hubs where this channel is duplicated, refreshing
  * such things as personal settings, channel permissions, address book updates, etc.
@@ -2714,7 +2676,7 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
 			$info['config'] = $settings;
 		}
 	}
-	
+
 	if($channel) {
 		$info['channel'] = array();
 		foreach($channel as $k => $v) {
@@ -2775,23 +2737,20 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
 		if($interval)
 			@time_sleep_until(microtime(true) + (float) $interval);
 	}
-
-
 }
 
 function process_channel_sync_delivery($sender,$arr,$deliveries) {
 
-// FIXME - this will sync red structures (channel, pconfig and abook). Eventually we need to make this application agnostic.
-
+	/** @FIXME this will sync red structures (channel, pconfig and abook). Eventually we need to make this application agnostic. */
 
 	$result = array();
-	
-	foreach($deliveries as $d) {
+
+	foreach ($deliveries as $d) {
 		$r = q("select * from channel where channel_hash = '%s' limit 1",
 			dbesc($d['hash'])
 		);
 
-		if(! $r) {
+		if (! $r) {
 			$result[] = array($d['hash'],'not found');
 			continue;
 		}
@@ -2801,7 +2760,6 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 		$max_friends = service_class_fetch($channel['channel_id'],'total_channels');
 		$max_feeds = account_service_class_fetch($channel['channel_account_id'],'total_feeds');
 
-
 		if($channel['channel_hash'] != $sender['hash']) {
 			logger('process_channel_sync_delivery: possible forgery. Sender ' . $sender['hash'] . ' is not ' . $channel['channel_hash']);
 			$result[] = array($d['hash'],'channel mismatch',$channel['channel_name'],'');
@@ -2832,8 +2790,6 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 			}
 		}
 
-
-
 		if(array_key_exists('abook',$arr) && is_array($arr['abook']) && count($arr['abook'])) {
 			$total_friends = 0;
 			$total_feeds = 0;
@@ -2922,7 +2878,7 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 					}
 					if($max_feeds !== false && ($clean['abook_flags'] & ABOOK_FLAG_FEED) && $total_feeds > $max_feeds) {
 						logger('process_channel_sync_delivery: total_feeds service class limit exceeded');
-						continue; 
+						continue;
 					}
 					q("insert into abook ( abook_xchan, abook_channel ) values ('%s', %d ) ",
 						dbesc($clean['abook_xchan']),
@@ -2931,7 +2887,7 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 					$total_friends ++;
 					if($clean['abook_flags'] & ABOOK_FLAG_FEED)
 						$total_feeds ++;
-				} 
+				}
 
 				if(count($clean)) {
 					foreach($clean as $k => $v) {
@@ -2975,7 +2931,7 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 						if(intval($cl['deleted']) && (! intval($y['deleted']))) {
 							q("delete from group_member where gid = %d",
 								intval($y['id'])
-							);  
+							);
 						}
 					}
 				}
@@ -3095,7 +3051,7 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 				if(! $x) {
 					q("insert into profile ( profile_guid, aid, uid ) values ('%s', %d, %d)",
 						dbesc($profile['profile_guid']),
-						intval($channel['channel_account_id']),		
+						intval($channel['channel_account_id']),
 						intval($channel['channel_id'])
 					);
 					$x = q("select * from profile where profile_guid = '%s' and uid = %d limit 1",
@@ -3109,9 +3065,12 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 				foreach($profile as $k => $v) {
 					if(in_array($k,$disallowed))
 						continue;
+
 					$clean[$k] = $v;
-					// TODO - check if these are allowed, otherwise we'll error
-					// We also need to import local photos if a custom photo is selected
+					/**
+					 * @TODO check if these are allowed, otherwise we'll error
+					 * We also need to import local photos if a custom photo is selected
+					 */
 				}
 				if(count($clean)) {
 					foreach($clean as $k => $v) {
@@ -3121,49 +3080,58 @@ function process_channel_sync_delivery($sender,$arr,$deliveries) {
 				}
 			}
 		}
-		
-		$result[] = array($d['hash'],'channel sync updated',$channel['channel_name'],'');
-
 
+		$result[] = array($d['hash'],'channel sync updated',$channel['channel_name'],'');
 	}
+
 	return $result;
 }
 
 // We probably should make rpost discoverable.
- 
+
 function get_rpost_path($observer) {
 	if(! $observer)
 		return '';
+
 	$parsed = parse_url($observer['xchan_url']);
-	return $parsed['scheme'] . '://' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : '') . '/rpost?f=';
 
+	return $parsed['scheme'] . '://' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : '') . '/rpost?f=';
 }
 
+
+/**
+ * @brief
+ *
+ * @param array $x
+ * @return boolean|string return false or a hash
+ */
 function import_author_zot($x) {
-	$hash = make_xchan_hash($x['guid'],$x['guid_sig']);
+	$hash = make_xchan_hash($x['guid'], $x['guid_sig']);
 	$r = q("select hubloc_url from hubloc where hubloc_guid = '%s' and hubloc_guid_sig = '%s' and (hubloc_flags & %d)>0 limit 1",
 		dbesc($x['guid']),
 		dbesc($x['guid_sig']),
 		intval(HUBLOC_FLAGS_PRIMARY)
 	);
 
-	if($r) {
+	if ($r) {
 		logger('import_author_zot: in cache', LOGGER_DEBUG);
 		return $hash;
 	}
 
 	logger('import_author_zot: entry not in cache - probing: ' . print_r($x,true), LOGGER_DEBUG);
-	
-	$them = array('hubloc_url' => $x['url'],'xchan_guid' => $x['guid'], 'xchan_guid_sig' => $x['guid_sig']);
-	if(zot_refresh($them))
+
+	$them = array('hubloc_url' => $x['url'], 'xchan_guid' => $x['guid'], 'xchan_guid_sig' => $x['guid_sig']);
+	if (zot_refresh($them))
 		return $hash;
+
 	return false;
 }
 
 
 /**
- * @function zot_process_message_request($data)
- *    If a site receives a comment to a post but finds they have no parent to attach it with, they
+ * @brief Process a message request.
+ *
+ * If a site receives a comment to a post but finds they have no parent to attach it with, they
  * may send a 'request' packet containing the message_id of the missing parent. This is the handler
  * for that packet. We will create a message_list array of the entire conversation starting with
  * the missing parent and invoke delivery to the sender of the packet.
@@ -3173,20 +3141,21 @@ function import_author_zot($x) {
  * processed/delivered in order.  
  *  
  * Called from mod/post.php
- */  
-
-
+ *
+ * @param array $data
+ * @return array
+ */
 function zot_process_message_request($data) {
 	$ret = array('success' => false);
 
-	if(! $data['message_id']) {
+	if (! $data['message_id']) {
 		$ret['message'] = 'no message_id';
 		logger('no message_id');
 		return $ret;
 	}
 
 	$sender = $data['sender'];
-	$sender_hash = make_xchan_hash($sender['guid'],$sender['guid_sig']);
+	$sender_hash = make_xchan_hash($sender['guid'], $sender['guid_sig']);
 
 	/*
 	 * Find the local channel in charge of this post (the first and only recipient of the request packet)
@@ -3197,7 +3166,7 @@ function zot_process_message_request($data) {
 	$c = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_hash = '%s' limit 1",
 		dbesc($recip_hash)
 	);
-	if(! $c) {
+	if (! $c) {
 		logger('recipient channel not found.');
 		$ret['message'] .= 'recipient not found.' . EOL;
 		return $ret;
@@ -3209,7 +3178,7 @@ function zot_process_message_request($data) {
 
 	$messages = zot_feed($c[0]['channel_id'],$sender_hash,array('message_id' => $data['message_id']));
 
-	if($messages) {
+	if ($messages) {
 		$env_recips = null;
 
 		$r = q("select hubloc_guid, hubloc_url, hubloc_sitekey, hubloc_network, hubloc_flags, hubloc_callback, hubloc_host 
@@ -3219,20 +3188,18 @@ function zot_process_message_request($data) {
 			intval(HUBLOC_FLAGS_DELETED),
 			intval(HUBLOC_OFFLINE)
 		);
-		if(! $r) {
+		if (! $r) {
 			logger('no hubs');
 			return $ret;
 		}
 		$hubs = $r;
-		$hublist = array();
-		$keys = array();
 
-		$private = ((array_key_exists('flags',$messages[0]) && in_array('private',$messages[0]['flags'])) ? true : false);
+		$private = ((array_key_exists('flags', $messages[0]) && in_array('private',$messages[0]['flags'])) ? true : false);
 		if($private)
-			$env_recips = array('guid' => $sender['guid'],'guid_sig' => $sender['guid_sig'],'hash' => $sender_hash);
+			$env_recips = array('guid' => $sender['guid'], 'guid_sig' => $sender['guid_sig'], 'hash' => $sender_hash);
 
 		$data_packet = json_encode(array('message_list' => $messages));
-		
+
 		foreach($hubs as $hub) {
 			$hash = random_string();
 
@@ -3260,10 +3227,10 @@ function zot_process_message_request($data) {
 			 * invoke delivery to send out the notify packet
 			 */
 
-			proc_run('php','include/deliver.php',$hash);
+			proc_run('php', 'include/deliver.php', $hash);
 		}
-
 	}
 	$ret['success'] = true;
+
 	return $ret;
 }
diff --git a/mod/admin.php b/mod/admin.php
index 7182bb9e5..fd2ba510b 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -73,7 +73,7 @@ function admin_post(&$a){
 }
 
 /**
- * @param App $$a
+ * @param App &$a
  * @return string
  */
 function admin_content(&$a) {
@@ -84,7 +84,7 @@ function admin_content(&$a) {
 		return login(false);
 	}
 
-	/**
+	/*
 	 * Side bar links
 	 */
 
@@ -125,7 +125,7 @@ function admin_content(&$a) {
 	));
 
 
-	/**
+	/*
 	 * Page content
 	 */
 	$o = '';
@@ -183,7 +183,7 @@ function admin_content(&$a) {
 /**
  * @brief Returns content for Admin Summary Page.
  *
- * @param App $$a
+ * @param App &$a
  * @return string HTML from parsed admin_summary.tpl
  */
 function admin_page_summary(&$a) {
@@ -252,8 +252,9 @@ function admin_page_summary(&$a) {
 
 
 /**
- * Admin Site Page
- *  @param App $a
+ * @brief POST handler for Admin Site Page.
+ *
+ * @param App &$a
  */
 function admin_page_site_post(&$a){
 	if (!x($_POST, 'page_site')){
@@ -277,15 +278,15 @@ function admin_page_site_post(&$a){
 
 	$register_text		=	((x($_POST,'register_text'))	? notags(trim($_POST['register_text']))		: '');
 
-	$allowed_sites        =	((x($_POST,'allowed_sites'))	? notags(trim($_POST['allowed_sites']))		: '');
-	$allowed_email        =	((x($_POST,'allowed_email'))	? notags(trim($_POST['allowed_email']))		: '');
-	$not_allowed_email    =	((x($_POST,'not_allowed_email'))	? notags(trim($_POST['not_allowed_email']))		: '');
-	$block_public		  =	((x($_POST,'block_public'))		? True	: False);
-	$force_publish		  =	((x($_POST,'publish_all'))		? True	: False);
-	$disable_discover_tab =	((x($_POST,'disable_discover_tab'))		? True	:	False);
-	$no_login_on_homepage =	((x($_POST,'no_login_on_homepage'))		? True	:	False);
-	$global_directory	  = ((x($_POST,'directory_submit_url'))	? notags(trim($_POST['directory_submit_url']))	: '');
-	$no_community_page	  = !((x($_POST,'no_community_page'))	? True	:	False);
+	$allowed_sites        = ((x($_POST,'allowed_sites'))	? notags(trim($_POST['allowed_sites']))		: '');
+	$allowed_email        = ((x($_POST,'allowed_email'))	? notags(trim($_POST['allowed_email']))		: '');
+	$not_allowed_email    = ((x($_POST,'not_allowed_email'))	? notags(trim($_POST['not_allowed_email']))		: '');
+	$block_public         = ((x($_POST,'block_public'))		? True	: False);
+	$force_publish        = ((x($_POST,'publish_all'))		? True	: False);
+	$disable_discover_tab = ((x($_POST,'disable_discover_tab'))		? True	:	False);
+	$no_login_on_homepage = ((x($_POST,'no_login_on_homepage'))		? True	:	False);
+	$global_directory     = ((x($_POST,'directory_submit_url'))	? notags(trim($_POST['directory_submit_url']))	: '');
+	$no_community_page    = !((x($_POST,'no_community_page'))	? True	:	False);
 	$default_expire_days  = ((array_key_exists('default_expire_days',$_POST)) ? intval($_POST['default_expire_days']) : 0);
 
 	$verifyssl         = ((x($_POST,'verifyssl'))        ? True : False);
@@ -307,7 +308,7 @@ function admin_page_site_post(&$a){
 	set_config('system', 'sitename', $sitename);
 	set_config('system', 'no_login_on_homepage', $no_login_on_homepage);
 	set_config('system', 'verify_email', $verify_email);
-	set_config('system','default_expire_days', $default_expire_days);
+	set_config('system', 'default_expire_days', $default_expire_days);
 
 	if ($banner == '') {
 		del_config('system', 'banner');
@@ -360,6 +361,8 @@ function admin_page_site_post(&$a){
 }
 
 /**
+ * @brief Admin page site.
+ *
  * @param  App $a
  * @return string
  */
@@ -480,8 +483,8 @@ function admin_page_site(&$a) {
 		'$default_expire_days' => array('default_expire_days', t('Expiration period in days for imported (matrix/network) content'), intval(get_config('system','default_expire_days')), t('0 for no expiration of imported content')),
 		'$form_security_token' => get_form_security_token("admin_site"),
 	));
-
 }
+
 function admin_page_hubloc_post(&$a){
 	check_form_security_token_redirectOnErr('/admin/hubloc', 'admin_hubloc');
 	require_once('include/zot.php');
@@ -617,7 +620,6 @@ function admin_page_queue($a) {
 		);
 	}
 
-
 	$r = q("select count(outq_posturl) as total, max(outq_priority) as priority, outq_posturl from outq 
 		where outq_delivered = 0 group by outq_posturl order by total desc");
 
@@ -626,7 +628,6 @@ function admin_page_queue($a) {
 		$r[$x]['connected'] = datetime_convert('UTC',date_default_timezone_get(),$r[$x]['connected'],'Y-m-d');
 	}
 
-
 	$o = replace_macros(get_markup_template('admin_queue.tpl'), array(
 		'$banner' => t('Queue Statistics'),
 		'$numentries' => t('Total Entries'),
@@ -763,13 +764,11 @@ function admin_page_users(&$a){
 	}
 
 
-//	WEe'll still need to link email addresses to admin/users/channels or some such, but this bit doesn't exist yet.
+//	We'll still need to link email addresses to admin/users/channels or some such, but this bit doesn't exist yet.
 //	That's where we need to be doing last post/channel flags/etc, not here.
 
-
 	$serviceclass = (($_REQUEST['class']) ? " and account_service_class = '" . dbesc($_REQUEST['class']) . "' " : '');
 
-
 	$order = " order by account_email asc ";
 	if($_REQUEST['order'] === 'expires')
 		$order = " order by account_expires desc ";
@@ -803,7 +802,6 @@ function admin_page_users(&$a){
 //	}
 //	$users = array_map("_setup_users", $users);
 
-
 	$t = get_markup_template('admin_users.tpl');
 	$o = replace_macros($t, array(
 		// strings //
@@ -841,9 +839,9 @@ function admin_page_users(&$a){
 
 
 /**
- * Channels admin page
+ * @brief Channels admin page.
  *
- * @param App $a
+ * @param App &$a
  */
 function admin_page_channels_post(&$a) {
 	$channels = ( x($_POST, 'channel') ? $_POST['channel'] : Array() );
@@ -872,7 +870,9 @@ function admin_page_channels_post(&$a) {
 }
 
 /**
- * @param App $a
+ * @brief
+ *
+ * @param App &$a
  * @return string
  */
 function admin_page_channels(&$a){
@@ -975,7 +975,7 @@ function admin_page_channels(&$a){
  */
 function admin_page_plugins(&$a){
 
-	/**
+	/*
 	 * Single plugin
 	 */
 	if ($a->argc == 3){
@@ -1055,7 +1055,7 @@ function admin_page_plugins(&$a){
 	}
 
 
-	/**
+	/*
 	 * List plugins
 	 */
 	$plugins = array();
@@ -1087,7 +1087,7 @@ function admin_page_plugins(&$a){
  * @param string $th
  * @param int $result
  */
-function toggle_theme(&$themes,$th,&$result) {
+function toggle_theme(&$themes, $th, &$result) {
 	for($x = 0; $x < count($themes); $x ++) {
 		if($themes[$x]['name'] === $th) {
 			if($themes[$x]['allowed']) {
@@ -1142,9 +1142,9 @@ function rebuild_theme_table($themes) {
 
 
 /**
- * Themes admin page
+ * @brief Themes admin page.
  *
- * @param App $a
+ * @param App &$a
  * @return string
  */
 function admin_page_themes(&$a){
@@ -1174,7 +1174,7 @@ function admin_page_themes(&$a){
 		return '';
 	}
 
-	/**
+	/*
 	 * Single theme
 	 */
 
@@ -1253,8 +1253,7 @@ function admin_page_themes(&$a){
 		));
 	}
 
-
-	/**
+	/*
 	 * List themes
 	 */
 
@@ -1281,9 +1280,9 @@ function admin_page_themes(&$a){
 
 
 /**
- * Logs admin page
+ * @brief POST handler for logs admin page.
  *
- * @param App $a
+ * @param App &$a
  */
 function admin_page_logs_post(&$a) {
 	if (x($_POST, 'page_logs')) {
@@ -1303,6 +1302,8 @@ function admin_page_logs_post(&$a) {
 }
 
 /**
+ * @brief Logs admin page.
+ *
  * @param App $a
  * @return string
  */
@@ -1435,5 +1436,4 @@ function admin_page_profs(&$a) {
 			'$submit' => t('Save')
 		));
 	}
-
 }
\ No newline at end of file
diff --git a/mod/id.php b/mod/id.php
index 05a2f3dc5..bd4c1fa89 100644
--- a/mod/id.php
+++ b/mod/id.php
@@ -1,45 +1,51 @@
 <?php
-
-	require 'library/openid/provider/provider.php';
-
-
-
-	$attrMap = array(
-        'namePerson/first'       => t('First Name'),
-        'namePerson/last'        => t('Last Name'),
-        'namePerson/friendly'    => t('Nickname'),
-		'namePerson'             => t('Full Name'),
-		'contact/internet/email' => t('Email'),
-		'contact/email'          => t('Email'),
-		'media/image/aspect11'   => t('Profile Photo'),
-		'media/image'            => t('Profile Photo'),
-		'media/image/default'    => t('Profile Photo'),
-		'media/image/16x16'      => t('Profile Photo 16px'),
-		'media/image/32x32'      => t('Profile Photo 32px'),
-		'media/image/48x48'      => t('Profile Photo 48px'),
-		'media/image/64x64'      => t('Profile Photo 64px'),
-		'media/image/80x80'      => t('Profile Photo 80px'),
-		'media/image/128x128'    => t('Profile Photo 128px'),
-		'timezone'               => t('Timezone'),
-		'contact/web/default'    => t('Homepage URL'),
-		'language/pref'          => t('Language'),
-		'birthDate/birthYear'    => t('Birth Year'),
-		'birthDate/birthMonth'   => t('Birth Month'),
-		'birthDate/birthday'     => t('Birth Day'),
-		'birthDate'              => t('Birthdate'),
-		'gender'                 => t('Gender'),
-	);
-
-
-
+/**
+ * @file mod/id.php
+ * @brief OpenID implementation
+ */
+
+require 'library/openid/provider/provider.php';
+
+
+$attrMap = array(
+	'namePerson/first'       => t('First Name'),
+	'namePerson/last'        => t('Last Name'),
+	'namePerson/friendly'    => t('Nickname'),
+	'namePerson'             => t('Full Name'),
+	'contact/internet/email' => t('Email'),
+	'contact/email'          => t('Email'),
+	'media/image/aspect11'   => t('Profile Photo'),
+	'media/image'            => t('Profile Photo'),
+	'media/image/default'    => t('Profile Photo'),
+	'media/image/16x16'      => t('Profile Photo 16px'),
+	'media/image/32x32'      => t('Profile Photo 32px'),
+	'media/image/48x48'      => t('Profile Photo 48px'),
+	'media/image/64x64'      => t('Profile Photo 64px'),
+	'media/image/80x80'      => t('Profile Photo 80px'),
+	'media/image/128x128'    => t('Profile Photo 128px'),
+	'timezone'               => t('Timezone'),
+	'contact/web/default'    => t('Homepage URL'),
+	'language/pref'          => t('Language'),
+	'birthDate/birthYear'    => t('Birth Year'),
+	'birthDate/birthMonth'   => t('Birth Month'),
+	'birthDate/birthday'     => t('Birth Day'),
+	'birthDate'              => t('Birthdate'),
+	'gender'                 => t('Gender'),
+);
+
+
+/**
+ * @brief Entrypoint for the OpenID implementation.
+ *
+ * @param App &$a
+ */
 function id_init(&$a) {
 
-	logger('id: ' . print_r($_REQUEST,true));
-
+	logger('id: ' . print_r($_REQUEST, true));
 
-	if(argc() > 1)
+	if(argc() > 1) {
 		$which = argv(1);
-	else {
+	} else {
 		$a->error = 404;
 		return;
 	}
@@ -48,41 +54,45 @@ function id_init(&$a) {
 	$channel = $a->get_channel();
 	profile_load($a,$which,$profile);
 
-
-
 	$op = new MysqlProvider;
 	$op->server();
-
 }
 
-
-function getUserData($handle=null) {
-	if(! local_channel()) {
+/**
+ * @brief Returns user data needed for OpenID.
+ *
+ * If no $handle is provided we will use local_channel() by default.
+ *
+ * @param string $handle (default null)
+ * @return boolean|array
+ */
+function getUserData($handle = null) {
+	if (! local_channel()) {
 		notice( t('Permission denied.') . EOL);
 		get_app()->page['content'] =  login();
+
 		return false;
 	}
 
 //	logger('handle: ' . $handle);
 
-	if($handle) {
+	if ($handle) {
 		$r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_address = '%s' limit 1",
 			dbesc($handle)
 		);
-	}
-	else {
+	} else {
 		$r = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_id = %d",
 			intval(local_channel())
 		);
 	}
 
-	if(! r)
+	if (! r)
 		return false;
 
 	$x = q("select * from account where account_id = %d limit 1", 
 		intval($r[0]['channel_account_id'])
 	);
-	if($x)
+	if ($x)
 		$r[0]['email'] = $x[0]['account_email'];
 
 	$p = q("select * from profile where is_default = 1 and uid = %d limit 1",
@@ -90,11 +100,11 @@ function getUserData($handle=null) {
 	);
 
 	$gender = '';
-	if($p[0]['gender'] == t('Male'))
+	if ($p[0]['gender'] == t('Male'))
 		$gender = 'M';
-	if($p[0]['gender'] == t('Female'))
+	if ($p[0]['gender'] == t('Female'))
 		$gender = 'F';
-		
+
 	$r[0]['firstName'] = ((strpos($r[0]['channel_name'],' ')) ? substr($r[0]['channel_name'],0,strpos($r[0]['channel_name'],' ')) : $r[0]['channel_name']);
 	$r[0]['lastName'] = ((strpos($r[0]['channel_name'],' ')) ? substr($r[0]['channel_name'],strpos($r[0]['channel_name'],' ')+1) : '');
 	$r[0]['namePerson'] = $r[0]['channel_name'];
@@ -113,7 +123,7 @@ function getUserData($handle=null) {
 	$r[0]['birthday'] = ((intval(substr($p[0]['dob'],8,2))) ? intval(substr($p[0]['dob'],8,2)) : '');
 	$r[0]['birthdate'] = (($r[0]['birthyear'] && $r[0]['birthmonth'] && $r[0]['birthday']) ? $p[0]['dob'] : '');
 	$r[0]['gender'] = $gender;
-	
+
 	return $r[0];
 
 /*
@@ -144,20 +154,20 @@ function getUserData($handle=null) {
 }
 
 
-
-
-class MysqlProvider extends LightOpenIDProvider
-{
-
+/**
+ * @brief MySQL provider for OpenID implementation.
+ *
+ */
+class MysqlProvider extends LightOpenIDProvider {
 
 	// See http://openid.net/specs/openid-attribute-properties-list-1_0-01.html
 	// This list contains a few variations of these attributes to maintain 
 	// compatibility with legacy clients
 
-    private $attrFieldMap = array(
-        'namePerson/first'       => 'firstName',
-        'namePerson/last'        => 'lastName',
-        'namePerson/friendly'    => 'channel_address',
+	private $attrFieldMap = array(
+		'namePerson/first'       => 'firstName',
+		'namePerson/last'        => 'lastName',
+		'namePerson/friendly'    => 'channel_address',
 		'namePerson'             => 'namePerson',
 		'contact/internet/email' => 'email',
 		'contact/email'          => 'email',
@@ -178,11 +188,9 @@ class MysqlProvider extends LightOpenIDProvider
 		'birthDate/birthday'     => 'birthday',
 		'birthDate'              => 'birthdate',
 		'gender'                 => 'gender',
-        );
-  
-  
-    function setup($identity, $realm, $assoc_handle, $attributes)
-    {
+	);
+
+	function setup($identity, $realm, $assoc_handle, $attributes) {
 		global $attrMap;
 
 //		logger('identity: ' . $identity);
@@ -190,10 +198,10 @@ class MysqlProvider extends LightOpenIDProvider
 //		logger('assoc_handle: ' . $assoc_handle);
 //		logger('attributes: ' . print_r($attributes,true));
 
-        $data = getUserData($assoc_handle);
+		$data = getUserData($assoc_handle);
 
 
-// FIXME this needs to be a template with localised strings
+/** @FIXME this needs to be a template with localised strings */
 
         $o .= '<form action="" method="post">'
            . '<input type="hidden" name="openid.assoc_handle" value="' . $assoc_handle . '">'
@@ -203,7 +211,7 @@ class MysqlProvider extends LightOpenIDProvider
         if($attributes['required'] || $attributes['optional']) {
             $o .= " It also requests following information (required fields marked with *):"
                . '<ul>';
-            
+
             foreach($attributes['required'] as $attr) {
                 if(isset($this->attrMap[$attr])) {
                     $o .= '<li>'
@@ -211,7 +219,7 @@ class MysqlProvider extends LightOpenIDProvider
                        . $this->attrMap[$attr] . ' <span class="required">*</span></li>';
                 }
             }
-            
+
             foreach($attributes['optional'] as $attr) {
                 if(isset($this->attrMap[$attr])) {
                     $o .= '<li>'
@@ -228,27 +236,23 @@ class MysqlProvider extends LightOpenIDProvider
            . '</form>';
 
 		get_app()->page['content'] .= $o;
+	}
 
-    }
-    
-    function checkid($realm, &$attributes)
-    {
+	function checkid($realm, &$attributes) {
 
 		logger('checkid: ' . $realm);
-
 		logger('checkid attrs: ' . print_r($attributes,true));
 
+		if(isset($_POST['cancel'])) {
+			$this->cancel();
+		}
 
-        if(isset($_POST['cancel'])) {
-            $this->cancel();
-        }
-        
-        $data = getUserData();
-        if(! $data) {
-            return false;
-        }
+		$data = getUserData();
+		if(! $data) {
+			return false;
+		}
 
-		$q = get_pconfig(local_channel(),'openid',$realm);
+		$q = get_pconfig(local_channel(), 'openid', $realm);
 
 		$attrs = array();
 		if($q) {
@@ -265,57 +269,42 @@ class MysqlProvider extends LightOpenIDProvider
                 $attributes[$attr] = $data[$this->attrFieldMap[$attr]];
             }
         }
-        
-        if(isset($_POST['always'])) {
+
+		if(isset($_POST['always'])) {
 			set_pconfig(local_channel(),'openid',$realm,array_keys($attributes));
-        }
-  
-		return z_root() . '/id/' . $data['channel_address'];      
-    }
-    
-    function assoc_handle()
-    {
-	logger('assoc_handle');
+		}
+
+		return z_root() . '/id/' . $data['channel_address'];
+	}
+
+	function assoc_handle() {
+		logger('assoc_handle');
 		$channel = get_app()->get_channel();
+
 		return z_root() . '/channel/' . $channel['channel_address']; 
+	}
 
-    }
-    
-    function setAssoc($handle, $data)
-    {
+	function setAssoc($handle, $data) {
 		logger('setAssoc');
 		$channel = channelx_by_nick(basename($handle));
 		if($channel)
 			set_pconfig($channel['channel_id'],'openid','associate',$data);
-    }
-    
-    function getAssoc($handle)
-    {
+	}
+
+	function getAssoc($handle) {
 		logger('getAssoc: ' . $handle);
 
 		$channel = channelx_by_nick(basename($handle));
 		if($channel)
-			return get_pconfig($channel['channel_id'],'openid','associate');
+			return get_pconfig($channel['channel_id'], 'openid', 'associate');
+
 		return false;
-    }
-    
-    function delAssoc($handle)
-    {
+	}
+
+	function delAssoc($handle) {
 		logger('delAssoc');
 		$channel = channelx_by_nick(basename($handle));
 		if($channel)
-			return del_pconfig($channel['channel_id'],'openid','associate');
-    }
-    
+			return del_pconfig($channel['channel_id'], 'openid', 'associate');
+	}
 }
-
-
-
-
-
-
-
-
-
-
-
diff --git a/mod/match.php b/mod/match.php
index 5a01ba645..fd739ba2c 100644
--- a/mod/match.php
+++ b/mod/match.php
@@ -1,14 +1,20 @@
 <?php
 
-// FIXME - this has never been properly ported from Friendica
-// It takes keywords from your profile and queries the directory server for 
-// matching keywords from other profiles.
-
-
+/**
+ * @brief Controller for /match.
+ *
+ * It takes keywords from your profile and queries the directory server for
+ * matching keywords from other profiles.
+ *
+ * @FIXME this has never been properly ported from Friendica.
+ *
+ * @param App &$a
+ * @return void|string
+ */
 function match_content(&$a) {
 
 	$o = '';
-	if(! local_channel())
+	if (! local_channel())
 		return;
 
 	$_SESSION['return_url'] = $a->get_baseurl() . '/' . $a->cmd;
@@ -18,22 +24,22 @@ function match_content(&$a) {
 	$r = q("SELECT `keywords` FROM `profile` WHERE `is_default` = 1 AND `uid` = %d LIMIT 1",
 		intval(local_channel())
 	);
-	if(! count($r))
-		return; 
-	if(! $r[0]['keywords']) {
-		notice( t('No keywords to match. Please add keywords to your default profile.') . EOL);
+	if (! count($r))
 		return;
 
+	if (! $r[0]['keywords']) {
+		notice( t('No keywords to match. Please add keywords to your default profile.') . EOL);
+		return;
 	}
 
 	$params = array();
 	$tags = trim($r[0]['keywords']);
-	
-	if($tags) {
+
+	if ($tags) {
 		$params['s'] = $tags;
-		if($a->pager['page'] != 1)
+		if ($a->pager['page'] != 1)
 			$params['p'] = $a->pager['page'];
-			
+
 //		if(strlen(get_config('system','directory_submit_url')))
 //			$x = post_url('http://dir.friendica.com/msearch', $params);
 //		else
@@ -41,18 +47,14 @@ function match_content(&$a) {
 
 		$j = json_decode($x);
 
-		if($j->total) {
+		if ($j->total) {
 			$a->set_pager_total($j->total);
 			$a->set_pager_itemspage($j->items_page);
 		}
 
-		if(count($j->results)) {
-
-
-			
+		if (count($j->results)) {
 			$tpl = get_markup_template('match.tpl');
-			foreach($j->results as $jj) {
-				
+			foreach ($j->results as $jj) {
 				$connlnk = $a->get_baseurl() . '/follow/?url=' . $jj->url;
 				$o .= replace_macros($tpl,array(
 					'$url' => zid($jj->url),
@@ -64,14 +66,13 @@ function match_content(&$a) {
 					'$tags' => $jj->tags
 				));
 			}
-		}
-		else {
+		} else {
 			info( t('No matches') . EOL);
-		}		
-
+		}
 	}
 
 	$o .= cleardiv();
 	$o .= paginate($a);
+
 	return $o;
 }
diff --git a/mod/post.php b/mod/post.php
index 31b688221..37002b249 100644
--- a/mod/post.php
+++ b/mod/post.php
@@ -1,20 +1,21 @@
-<?php /** @file */
+<?php
 
 /**
- * Zot endpoint
+ * @file mod/post.php
+ *
+ * @brief Zot endpoint.
+ *
  */
 
-
 require_once('include/zot.php');
 
-
-function post_init(&$a) {
-
-	// Most access to this endpoint is via the post method.
-	// Here we will pick out the magic auth params which arrive
-	// as a get request, and the only communications to arrive this way.
-
 /**
+ * @brief HTTP POST entry point for Zot.
+ *
+ * Most access to this endpoint is via the post method.
+ * Here we will pick out the magic auth params which arrive as a get request,
+ * and the only communications to arrive this way.
+ *
  * Magic Auth
  * ==========
  *
@@ -24,67 +25,68 @@ function post_init(&$a) {
  * The endpoint is typically  https://$remotesite/post - or whatever was specified as the callback url in prior communications
  * (we will bootstrap an address and fetch a zot info packet if possible where no prior communications exist)
  *
- * Four GET parameters are supplied:
- *
- ** auth => the urlencoded webbie (channel@host.domain) of the channel requesting access
- ** dest => the desired destination URL (urlencoded)
- ** sec  => a random string which is also stored on $mysite for use during the verification phase. 
- ** version => the zot revision
- ** delegate => optional urlencoded webbie of a local channel to invoke delegation rights for
+ * Five GET parameters are supplied:
+ * * auth => the urlencoded webbie (channel@host.domain) of the channel requesting access
+ * * dest => the desired destination URL (urlencoded)
+ * * sec  => a random string which is also stored on $mysite for use during the verification phase. 
+ * * version => the zot revision
+ * * delegate => optional urlencoded webbie of a local channel to invoke delegation rights for
  *
  * When this packet is received, an "auth-check" zot message is sent to $mysite.
  * (e.g. if $_GET['auth'] is foobar@podunk.edu, a zot packet is sent to the podunk.edu zot endpoint, which is typically /post)
  * If no information has been recorded about the requesting identity a zot information packet will be retrieved before
  * continuing.
- * 
+ *
  * The sender of this packet is an arbitrary/random site channel. The recipients will be a single recipient corresponding
  * to the guid and guid_sig we have associated with the requesting auth identity
  *
- *
- *    {
- *      "type":"auth_check",
- *      "sender":{
- *        "guid":"kgVFf_...",
- *        "guid_sig":"PT9-TApz...",
- *        "url":"http:\/\/podunk.edu",
- *        "url_sig":"T8Bp7j..."
- *      },
- *      "recipients":{
- *        {
- *        "guid":"ZHSqb...",
- *        "guid_sig":"JsAAXi..."
- *        }
- *      }
- *      "callback":"\/post",
- *      "version":1,
- *      "secret":"1eaa661",
- *      "secret_sig":"eKV968b1..."
- *    }
- *
+ * \code{.json}
+ * {
+ *   "type":"auth_check",
+ *   "sender":{
+ *     "guid":"kgVFf_...",
+ *     "guid_sig":"PT9-TApz...",
+ *     "url":"http:\/\/podunk.edu",
+ *     "url_sig":"T8Bp7j..."
+ *   },
+ *   "recipients":{
+ *     {
+ *       "guid":"ZHSqb...",
+ *       "guid_sig":"JsAAXi..."
+ *     }
+ *   }
+ *   "callback":"\/post",
+ *   "version":1,
+ *   "secret":"1eaa661",
+ *   "secret_sig":"eKV968b1..."
+ * }
+ * \endcode
  *
  * auth_check messages MUST use encapsulated encryption. This message is sent to the origination site, which checks the 'secret' to see 
  * if it is the same as the 'sec' which it passed originally. It also checks the secret_sig which is the secret signed by the 
  * destination channel's private key and base64url encoded. If everything checks out, a json packet is returned:
  *
- *    { 
- *      "success":1, 
- *      "confirm":"q0Ysovd1u..."
- *      "service_class":(optional)
- *      "level":(optional)
- *    }
+ * \code{.json}
+ * {
+ *   "success":1,
+ *   "confirm":"q0Ysovd1u...",
+ *   "service_class":(optional)
+ *   "level":(optional)
+ * }
+ * \endcode
  *
  * 'confirm' in this case is the base64url encoded RSA signature of the concatenation of 'secret' with the
  * base64url encoded whirlpool hash of the requestor's guid and guid_sig; signed with the source channel private key. 
  * This prevents a man-in-the-middle from inserting a rogue success packet. Upon receipt and successful 
  * verification of this packet, the destination site will redirect to the original destination URL and indicate a successful remote login. 
  * Service_class can be used by cooperating sites to provide different access rights based on account rights and subscription plans. It is 
- * a string whose contents are not defined by protocol. Example: "basic" or "gold". 
- *
- *
+ * a string whose contents are not defined by protocol. Example: "basic" or "gold".
  *
+ * @param[in,out] App &$a
  */
-	
-	if(array_key_exists('auth',$_REQUEST)) {
+function post_init(&$a) {
+
+	if (array_key_exists('auth', $_REQUEST)) {
 
 		$ret = array('success' => false, 'message' => '');
 
@@ -95,7 +97,7 @@ function post_init(&$a) {
 		$version  = $_REQUEST['version'];
 		$delegate = $_REQUEST['delegate'];
 
-		$test    = ((x($_REQUEST,'test')) ? intval($_REQUEST['test']) : 0);
+		$test     = ((x($_REQUEST, 'test')) ? intval($_REQUEST['test']) : 0);
 
 		// They are authenticating ultimately to the site and not to a particular channel.
 		// Any channel will do, providing it's currently active. We just need to have an 
@@ -105,10 +107,10 @@ function post_init(&$a) {
 			intval(PAGE_REMOVED)
 		);
 
-		if(! $c) {
+		if (! $c) {
 			// nobody here
 			logger('mod_zot: auth: unable to find a response channel');
-			if($test) {
+			if ($test) {
 				$ret['message'] .= 'no local channels found.' . EOL;
 				json_return_and_die($ret);
 			}
@@ -121,12 +123,12 @@ function post_init(&$a) {
 			dbesc($address)
 		);
 
-		if(! $x) {
+		if (! $x) {
 			// finger them if they can't be found. 
-			$ret = zot_finger($address,null);
-			if($ret['success']) {
-				$j = json_decode($ret['body'],true);
-				if($j)
+			$ret = zot_finger($address, null);
+			if ($ret['success']) {
+				$j = json_decode($ret['body'], true);
+				if ($j)
 					import_xchan($j);
 				$x = q("select * from hubloc left join xchan on xchan_hash = hubloc_hash where hubloc_addr = '%s' order by hubloc_id desc limit 1",
 					dbesc($address)
@@ -166,61 +168,60 @@ function post_init(&$a) {
 
 		$j = array();
 
-		if(! $already_authed) {
+		if (! $already_authed) {
 
 			// Auth packets MUST use ultra top-secret hush-hush mode - e.g. the entire packet is encrypted using the site private key
 			// The actual channel sending the packet ($c[0]) is not important, but this provides a generic zot packet with a sender
 			// which can be verified
  
 			$p = zot_build_packet($c[0],$type = 'auth_check', array(array('guid' => $x[0]['hubloc_guid'],'guid_sig' => $x[0]['hubloc_guid_sig'])), $x[0]['hubloc_sitekey'], $sec);
-			if($test) {
+			if ($test) {
 				$ret['message'] .= 'auth check packet created using sitekey ' . $x[0]['hubloc_sitekey'] . EOL;
 				$ret['message'] .= 'packet contents: ' . $p . EOL;
 			}
 
 			$result = zot_zot($x[0]['hubloc_callback'],$p);
 
-
-			if(! $result['success']) {
+			if (! $result['success']) {
 				logger('mod_zot: auth_check callback failed.');
-				if($test) {
+				if ($test) {
 					$ret['message'] .= 'auth check request to your site returned .' . print_r($result, true) . EOL;
 					json_return_and_die($ret);
 				}
 
 				goaway($desturl);
 			}
-			$j = json_decode($result['body'],true);
-			if(! $j) {
+			$j = json_decode($result['body'], true);
+			if (! $j) {
 				logger('mod_zot: auth_check json data malformed.');
 				if($test) {
 					$ret['message'] .= 'json malformed: ' . $result['body'] . EOL;
 					json_return_and_die($ret);
 				}
-			}				
+			}
 		}
 
-		if($test) {
+		if ($test) {
 			$ret['message'] .= 'auth check request returned .' . print_r($j, true) . EOL;
-		}	
+		}
 
-		if($already_authed || $j['success']) {
-			if($j['success']) {
+		if ($already_authed || $j['success']) {
+			if ($j['success']) {
 				// legit response, but we do need to check that this wasn't answered by a man-in-middle
-				if(! rsa_verify($sec . $x[0]['xchan_hash'],base64url_decode($j['confirm']),$x[0]['xchan_pubkey'])) {
+				if (! rsa_verify($sec . $x[0]['xchan_hash'],base64url_decode($j['confirm']),$x[0]['xchan_pubkey'])) {
 					logger('mod_zot: auth: final confirmation failed.');
-					if($test) {
+					if ($test) {
 						$ret['message'] .= 'final confirmation failed. ' . $sec . print_r($j,true) . print_r($x[0],true);
 						json_return_and_die($ret);
 					}
-						
+
 					goaway($desturl);
 				}
-				if(array_key_exists('service_class',$j))
+				if (array_key_exists('service_class',$j))
 					$remote_service_class = $j['service_class'];
-				if(array_key_exists('level',$j))
+				if (array_key_exists('level',$j))
 					$remote_level = $j['level'];
-				if(array_key_exists('DNT',$j))
+				if (array_key_exists('DNT',$j))
 					$DNT = $j['DNT'];
 			}
 			// everything is good... maybe
@@ -229,35 +230,33 @@ function post_init(&$a) {
 				// tell them to logout if they're logged in locally as anything but the target remote account
 				// in which case just shut up because they don't need to be doing this at all.
 
-				if($a->channel['channel_hash'] != $x[0]['xchan_hash']) {
+				if ($a->channel['channel_hash'] != $x[0]['xchan_hash']) {
 					logger('mod_zot: auth: already authenticated locally as somebody else.');
 					notice( t('Remote authentication blocked. You are logged into this site locally. Please logout and retry.') . EOL);
-					if($test) {
+					if ($test) {
 						$ret['message'] .= 'already logged in locally with a conflicting identity.' . EOL;
 						json_return_and_die($ret);
 					}
-
 				}
 				goaway($desturl);
 			}
-			
 
 			// log them in
 
-			if($test) {
+			if ($test) {
 				$ret['success'] = true;
 				$ret['message'] .= 'Authentication Success!' . EOL;
 				json_return_and_die($ret);
 			}
 
 			$delegation_success = false;
-			if($delegate) {
+			if ($delegate) {
 				$r = q("select * from channel left join xchan on channel_hash = xchan_hash where xchan_addr = '%s' limit 1",
 					dbesc($delegate)
 				);
-				if($r && intval($r[0]['channel_id'])) {
+				if ($r && intval($r[0]['channel_id'])) {
 					$allowed = perm_is_allowed($r[0]['channel_id'],$x[0]['xchan_hash'],'delegate');
-					if($allowed) {
+					if ($allowed) {
 						$_SESSION['delegate_channel'] = $r[0]['channel_id'];
 						$_SESSION['delegate'] = $x[0]['xchan_hash'];
 						$_SESSION['account_id'] = intval($r[0]['channel_account_id']);
@@ -267,12 +266,9 @@ function post_init(&$a) {
 					}
 				}
 			}
-			
-
-
 
 			$_SESSION['authenticated'] = 1;
-			if(! $delegation_success) {
+			if (! $delegation_success) {
 				$_SESSION['visitor_id'] = $x[0]['xchan_hash'];
 				$_SESSION['my_url'] = $x[0]['xchan_url'];
 				$_SESSION['my_address'] = $address;
@@ -289,18 +285,15 @@ function post_init(&$a) {
 			$a->set_groups(init_groups_visitor($_SESSION['visitor_id']));
 			info(sprintf( t('Welcome %s. Remote authentication successful.'),$x[0]['xchan_name']));
 			logger('mod_zot: auth success from ' . $x[0]['xchan_addr']); 
-			 q("update hubloc set hubloc_status =  (hubloc_status | %d ) where hubloc_id = %d ",
-                                intval(HUBLOC_WORKS),
-                                intval($x[0]['hubloc_id'])
-                        );
-
-
+			q("update hubloc set hubloc_status =  (hubloc_status | %d ) where hubloc_id = %d ",
+					intval(HUBLOC_WORKS),
+					intval($x[0]['hubloc_id'])
+			);
 		} else {
-			if($test) {
+			if ($test) {
 				$ret['message'] .= 'auth failure. ' . print_r($_REQUEST,true) . print_r($j,true) . EOL;
 				json_return_and_die($ret);
 			}
-
 			logger('mod_zot: magic-auth failure - not authenticated: ' . $x[0]['xchan_addr']);
 			q("update hubloc set hubloc_status =  (hubloc_status | %d ) where hubloc_id = %d ",
 				intval(HUBLOC_RECEIVE_ERROR),
@@ -308,11 +301,14 @@ function post_init(&$a) {
 			);
 		}
 
-		// FIXME - we really want to save the return_url in the session before we visit rmagic.
-		// This does however prevent a recursion if you visit rmagic directly, as it would otherwise send you back here again. 
-		// But z_root() probably isn't where you really want to go. 
+		/**
+		 * @FIXME we really want to save the return_url in the session before we
+		 * visit rmagic. This does however prevent a recursion if you visit
+		 * rmagic directly, as it would otherwise send you back here again.
+		 * But z_root() probably isn't where you really want to go.
+		 */
 
-		if($test) {
+		if ($test) {
 			$ret['message'] .= 'auth failure fallthrough ' . print_r($_REQUEST,true) . print_r($j,true) . EOL;
 			json_return_and_die($ret);
 		}
@@ -322,41 +318,40 @@ function post_init(&$a) {
 
 		goaway($desturl);
 	}
-	return;
 }
 
 
 /**
- * @function post_post(&$a)
- *     zot communications and messaging
+ * @brief zot communications and messaging.
  *
- *     Sender HTTP posts to this endpoint ($site/post typically) with 'data' parameter set to json zot message packet.
- *     This packet is optionally encrypted, which we will discover if the json has an 'iv' element.
- *     $contents => array( 'alg' => 'aes256cbc', 'iv' => initialisation vector, 'key' => decryption key, 'data' => encrypted data);
- *     $contents->iv and $contents->key are random strings encrypted with this site's RSA public key and then base64url encoded.
- *     Currently only 'aes256cbc' is used, but this is extensible should that algorithm prove inadequate.
+ * Sender HTTP posts to this endpoint ($site/post typically) with 'data' parameter set to json zot message packet.
+ * This packet is optionally encrypted, which we will discover if the json has an 'iv' element.
+ * $contents => array( 'alg' => 'aes256cbc', 'iv' => initialisation vector, 'key' => decryption key, 'data' => encrypted data);
+ * $contents->iv and $contents->key are random strings encrypted with this site's RSA public key and then base64url encoded.
+ * Currently only 'aes256cbc' is used, but this is extensible should that algorithm prove inadequate.
  *
- *     Once decrypted, one will find the normal json_encoded zot message packet. 
+ * Once decrypted, one will find the normal json_encoded zot message packet.
  * 
  * Defined packet types are: notify, purge, refresh, force_refresh, auth_check, ping, and pickup 
  *
  * Standard packet: (used by notify, purge, refresh, force_refresh, and auth_check)
- *
+ * \code{.json}
  * {
- *  "type": "notify",
- *  "sender":{
- *       "guid":"kgVFf_1...",
- *       "guid_sig":"PT9-TApzp...",
- *       "url":"http:\/\/podunk.edu",
- *       "url_sig":"T8Bp7j5...",
- *    },
- *  "recipients": { optional recipient array },
- *  "callback":"\/post",
- *  "version":1,
- *  "secret":"1eaa...",
- *  "secret_sig": "df89025470fac8..."
+ *   "type": "notify",
+ *   "sender":{
+ *     "guid":"kgVFf_1...",
+ *     "guid_sig":"PT9-TApzp...",
+ *     "url":"http:\/\/podunk.edu",
+ *     "url_sig":"T8Bp7j5...",
+ *   },
+ *   "recipients": { optional recipient array },
+ *   "callback":"\/post",
+ *   "version":1,
+ *   "secret":"1eaa...",
+ *   "secret_sig": "df89025470fac8..."
  * }
- * 
+ * \endcode
+ *
  * Signature fields are all signed with the sender channel private key and base64url encoded.
  * Recipients are arrays of guid and guid_sig, which were previously signed with the recipients private 
  * key and base64url encoded and later obtained via channel discovery. Absence of recipients indicates
@@ -364,108 +359,116 @@ function post_init(&$a) {
  *
  * "pickup" packet:
  * The pickup packet is sent in response to a notify packet from another site
- * 
+ * \code{.json}
  * {
- *  "type":"pickup",
- *  "url":"http:\/\/example.com",
- *  "callback":"http:\/\/example.com\/post",
- *  "callback_sig":"teE1_fLI...",
- *  "secret":"1eaa...",
- *  "secret_sig":"O7nB4_..."
+ *   "type":"pickup",
+ *   "url":"http:\/\/example.com",
+ *   "callback":"http:\/\/example.com\/post",
+ *   "callback_sig":"teE1_fLI...",
+ *   "secret":"1eaa...",
+ *   "secret_sig":"O7nB4_..."
  * }
+ * \endcode
  *
- * In the pickup packet, the sig fields correspond to the respective data element signed with this site's system 
- * private key and then base64url encoded.
+ * In the pickup packet, the sig fields correspond to the respective data
+ * element signed with this site's system private key and then base64url encoded.
  * The "secret" is the same as the original secret from the notify packet. 
  *
- * If verification is successful, a json structure is returned
- * containing a success indicator and an array of type 'pickup'.
- * Each pickup element contains the original notify request and a message field whose contents are 
- * dependent on the message type
+ * If verification is successful, a json structure is returned containing a
+ * success indicator and an array of type 'pickup'.
+ * Each pickup element contains the original notify request and a message field
+ * whose contents are dependent on the message type.
  *
- * This JSON array is AES encapsulated using the site public key of the site that sent the initial zot pickup packet.
+ * This JSON array is AES encapsulated using the site public key of the site
+ * that sent the initial zot pickup packet.
  * Using the above example, this would be example.com.
- * 
- * 
+ *
+ * \code{.json}
  * {
- * "success":1,
- * "pickup":{
- *   "notify":{
- *     "type":"notify",
- *     "sender":{
- *       "guid":"kgVFf_...",
- *       "guid_sig":"PT9-TApz...",
- *       "url":"http:\/\/z.podunk.edu",
- *       "url_sig":"T8Bp7j5D..."
- *     },
- *     "callback":"\/post",
- *     "version":1,
- *     "secret":"1eaa661..."
- *   },
- *   "message":{
- *     "type":"activity",
- *     "message_id":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
- *     "message_top":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
- *     "message_parent":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
- *     "created":"2012-11-20 04:04:16",
- *     "edited":"2012-11-20 04:04:16",
- *     "title":"",
- *     "body":"Hi Nickordo",
- *     "app":"",
- *     "verb":"post",
- *     "object_type":"",
- *     "target_type":"",
- *     "permalink":"",
- *     "location":"",
- *     "longlat":"",
- *     "owner":{
- *       "name":"Indigo",
- *       "address":"indigo@podunk.edu",
- *       "url":"http:\/\/podunk.edu",
- *       "photo":{
- *         "mimetype":"image\/jpeg",
- *         "src":"http:\/\/podunk.edu\/photo\/profile\/m\/5"
+ *   "success":1,
+ *   "pickup":{
+ *     "notify":{
+ *       "type":"notify",
+ *       "sender":{
+ *         "guid":"kgVFf_...",
+ *         "guid_sig":"PT9-TApz...",
+ *         "url":"http:\/\/z.podunk.edu",
+ *         "url_sig":"T8Bp7j5D..."
  *       },
- *       "guid":"kgVFf_...",
- *       "guid_sig":"PT9-TAp...",
+ *       "callback":"\/post",
+ *       "version":1,
+ *       "secret":"1eaa661..."
  *     },
- *     "author":{
- *       "name":"Indigo",
- *       "address":"indigo@podunk.edu",
- *       "url":"http:\/\/podunk.edu",
- *       "photo":{
- *         "mimetype":"image\/jpeg",
- *         "src":"http:\/\/podunk.edu\/photo\/profile\/m\/5"
+ *     "message":{
+ *       "type":"activity",
+ *       "message_id":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
+ *       "message_top":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
+ *       "message_parent":"10b049ce384cbb2da9467319bc98169ab36290b8bbb403aa0c0accd9cb072e76@podunk.edu",
+ *       "created":"2012-11-20 04:04:16",
+ *       "edited":"2012-11-20 04:04:16",
+ *       "title":"",
+ *       "body":"Hi Nickordo",
+ *       "app":"",
+ *       "verb":"post",
+ *       "object_type":"",
+ *       "target_type":"",
+ *       "permalink":"",
+ *       "location":"",
+ *       "longlat":"",
+ *       "owner":{
+ *         "name":"Indigo",
+ *         "address":"indigo@podunk.edu",
+ *         "url":"http:\/\/podunk.edu",
+ *         "photo":{
+ *           "mimetype":"image\/jpeg",
+ *           "src":"http:\/\/podunk.edu\/photo\/profile\/m\/5"
+ *         },
+ *         "guid":"kgVFf_...",
+ *         "guid_sig":"PT9-TAp...",
  *       },
- *       "guid":"kgVFf_...",
- *       "guid_sig":"PT9-TAp..."
+ *       "author":{
+ *         "name":"Indigo",
+ *         "address":"indigo@podunk.edu",
+ *         "url":"http:\/\/podunk.edu",
+ *         "photo":{
+ *           "mimetype":"image\/jpeg",
+ *           "src":"http:\/\/podunk.edu\/photo\/profile\/m\/5"
+ *         },
+ *         "guid":"kgVFf_...",
+ *         "guid_sig":"PT9-TAp..."
+ *       }
  *     }
  *   }
  * }
- *} 
+ * \endcode
  *
- * Currently defined message types are 'activity', 'mail', 'profile', 'location' and 'channel_sync', 
- * which each have different content schemas.
+ * Currently defined message types are 'activity', 'mail', 'profile', 'location'
+ * and 'channel_sync', which each have different content schemas.
  *
  * Ping packet:
- * A ping packet does not require any parameters except the type. It may or may not be encrypted.
- * 
+ * A ping packet does not require any parameters except the type. It may or may
+ * not be encrypted.
+ *
+ * \code{.json}
  * {
- *  "type": "ping"
+ *   "type": "ping"
  * }
- * 
+ * \endcode
+ *
  * On receipt of a ping packet a ping response will be returned:
  *
+ * \code{.json}
  * {
  *   "success" : 1,
  *   "site" {
- *       "url":"http:\/\/podunk.edu",
- *       "url_sig":"T8Bp7j5...",
- *       "sitekey": "-----BEGIN PUBLIC KEY-----
- *                  MIICIjANBgkqhkiG9w0BAQE..."
- *    }
+ *     "url": "http:\/\/podunk.edu",
+ *     "url_sig": "T8Bp7j5...",
+ *     "sitekey": "-----BEGIN PUBLIC KEY-----
+ *                 MIICIjANBgkqhkiG9w0BAQE..."
+ *   }
  * }
- * 
+ * \endcode
+ *
  * The ping packet can be used to verify that a site has not been re-installed, and to 
  * initiate corrective action if it has. The url_sig is signed with the site private key
  * and base64url encoded - and this should verify with the enclosed sitekey. Failure to
@@ -479,21 +482,19 @@ function post_init(&$a) {
  * If you have no records which match this url_sig and key - no corrective action should
  * be taken as this packet may have been returned by an imposter.  
  *
+ * @param[in,out] App &$a
  */
-
-	
 function post_post(&$a) {
 
-
 	$encrypted_packet = false;
 	$ret = array('success' => false);
 
 	$data = json_decode($_REQUEST['data'],true);
 
-
-	/**
-	 * Many message packets will arrive encrypted. The existence of an 'iv' element 
-	 * tells us we need to unencapsulate the AES-256-CBC content using the site private key
+	/*
+	 * Many message packets will arrive encrypted. The existence of an 'iv'
+	 * element tells us we need to unencapsulate the AES-256-CBC content using
+	 * the site private key.
 	 */
 
 	if($data && array_key_exists('iv',$data)) {
@@ -539,12 +540,11 @@ function post_post(&$a) {
 
 	if($msgtype === 'pickup') {
 
-		/**
+		/*
 		 * The 'pickup' message arrives with a tracking ID which is associated with a particular outq_hash
 		 * First verify that that the returned signatures verify, then check that we have an outbound queue item
 		 * with the correct hash.
 		 * If everything verifies, find any/all outbound messages in the queue for this hubloc and send them back
-		 *
 		 */
 
 		if((! $data['secret']) || (! $data['secret_sig'])) {
@@ -597,7 +597,7 @@ function post_post(&$a) {
 			json_return_and_die($ret);
 		}
 
-		/**
+		/*
 		 * If we made it to here, the signatures verify, but we still don't know if the tracking ID is valid.
 		 * It wouldn't be an error if the tracking ID isn't found, because we may have sent this particular
 		 * queue item with another pickup (after the tracking ID for the other pickup  was verified). 
@@ -613,7 +613,7 @@ function post_post(&$a) {
 			json_return_and_die($ret);
 		}
 
-		/**
+		/*
 		 * Everything is good if we made it here, so find all messages that are going to this location
 		 * and send them all.
 		 */
@@ -651,33 +651,31 @@ function post_post(&$a) {
 		$encrypted = crypto_encapsulate(json_encode($ret),$sitekey);
 		json_return_and_die($encrypted);
 
-		/** pickup: end */
+		/* pickup: end */
 	}
 
 
-
-
-	/**
+	/*
 	 * All other message types require us to verify the sender. This is a generic check, so we 
 	 * will do it once here and bail if anything goes wrong.
 	 */
 
-	if(array_key_exists('sender',$data)) {
+	if (array_key_exists('sender',$data)) {
 		$sender = $data['sender'];
-	}	
+	}
 
-	/** Check if the sender is already verified here */
+	/* Check if the sender is already verified here */
 
 	$hub = zot_gethub($sender);
 
-	if(! $hub) {
+	if (! $hub) {
 
-		/** Have never seen this guid or this guid coming from this location. Check it and register it. */
+		/* Have never seen this guid or this guid coming from this location. Check it and register it. */
 
 		// (!!) this will validate the sender
 		$result = zot_register_hub($sender);
 
-		if((! $result['success']) || (! ($hub = zot_gethub($sender)))) {
+		if ((! $result['success']) || (! ($hub = zot_gethub($sender)))) {
 			$ret['message'] = 'Hub not available.';
 			logger('mod_zot: no hub');
 			json_return_and_die($ret);
@@ -695,12 +693,12 @@ function post_post(&$a) {
 
 	// a dead hub came back to life - reset any tombstones we might have
 
-	if($hub['hubloc_status'] & HUBLOC_OFFLINE) {
+	if ($hub['hubloc_status'] & HUBLOC_OFFLINE) {
 		q("update hubloc set hubloc_status = (hubloc_status & ~%d) where hubloc_id = %d",
 			intval(HUBLOC_OFFLINE),
 			intval($hub['hubloc_id'])		
 		);
-		if($r[0]['hubloc_flags'] & HUBLOC_FLAGS_ORPHANCHECK) {
+		if ($r[0]['hubloc_flags'] & HUBLOC_FLAGS_ORPHANCHECK) {
 			q("update hubloc set hubloc_flags = (hubloc_flags & ~%d) where hubloc_id = %d",
 				intval(HUBLOC_FLAGS_ORPHANCHECK),
 				intval($hub['hubloc_id'])
@@ -711,15 +709,13 @@ function post_post(&$a) {
 			intval(XCHAN_FLAGS_ORPHAN),
 			dbesc($hub['hubloc_hash'])
 		);
-	} 
-
+	}
 
 
-	/** 
+	/*
 	 * This hub has now been proven to be valid.
 	 * Any hub with the same URL and a different sitekey cannot be valid.
 	 * Get rid of them (mark them deleted). There's a good chance they were re-installs.
-	 *
 	 */
 
 	q("update hubloc set hubloc_flags = ( hubloc_flags | %d ) where hubloc_url = '%s' and hubloc_sitekey != '%s' ",
@@ -728,15 +724,15 @@ function post_post(&$a) {
 		dbesc($hub['hubloc_sitekey'])
 	);
 
-	// TODO: check which hub is primary and take action if mismatched
+	/** @TODO check which hub is primary and take action if mismatched */
 
-	if(array_key_exists('recipients',$data))
+	if (array_key_exists('recipients', $data))
 		$recipients = $data['recipients'];
 
 
-	if($msgtype === 'auth_check') {
+	if ($msgtype === 'auth_check') {
 
-		/**
+		/*
 		 * Requestor visits /magic/?dest=somewhere on their own site with a browser
 		 * magic redirects them to $destsite/post [with auth args....]
 		 * $destsite sends an auth_check packet to originator site
@@ -751,12 +747,12 @@ function post_post(&$a) {
 		 */
 		logger('mod_zot: auth_check', LOGGER_DEBUG);
 
-		if(! $encrypted_packet) {
+		if (! $encrypted_packet) {
 			logger('mod_zot: auth_check packet was not encrypted.');
 			$ret['message'] .= 'no packet encryption' . EOL;
 			json_return_and_die($ret);
 		}
-		
+
 		$arr = $data['sender'];
 		$sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']);
 
@@ -774,7 +770,7 @@ function post_post(&$a) {
 		// First verify their signature. We will have obtained a zot-info packet from them as part of the sender
 		// verification. 
 
-		if((! $y) || (! rsa_verify($data['secret'],base64url_decode($data['secret_sig']),$y[0]['xchan_pubkey']))) {
+		if ((! $y) || (! rsa_verify($data['secret'], base64url_decode($data['secret_sig']),$y[0]['xchan_pubkey']))) {
 			logger('mod_zot: auth_check: sender not found or secret_sig invalid.');
 			$ret['message'] .= 'sender not found or sig invalid ' . print_r($y,true) . EOL;
 			json_return_and_die($ret);
@@ -784,14 +780,14 @@ function post_post(&$a) {
 
 		$ret['message'] .= 'recipients ' . print_r($recipients,true) . EOL;
 
-		if($data['recipients']) {
+		if ($data['recipients']) {
 
 			$arr = $data['recipients'][0];
-			$recip_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']);
+			$recip_hash = make_xchan_hash($arr['guid'], $arr['guid_sig']);
 			$c = q("select channel_id, channel_account_id, channel_prvkey from channel where channel_hash = '%s' limit 1",
 				dbesc($recip_hash)
 			);
-			if(! $c) {
+			if (! $c) {
 				logger('mod_zot: auth_check: recipient channel not found.');
 				$ret['message'] .= 'recipient not found.' . EOL;
 				json_return_and_die($ret);
@@ -807,7 +803,7 @@ function post_post(&$a) {
 				dbesc($data['secret']),
 				dbesc($data['sender']['url'])
 			);
-			if(! $z) {
+			if (! $z) {
 				logger('mod_zot: auth_check: verification key not found.');
 				$ret['message'] .= 'verification key not found' . EOL;
 				json_return_and_die($ret);
@@ -823,70 +819,66 @@ function post_post(&$a) {
 			logger('mod_zot: auth_check: success', LOGGER_DEBUG);
 			$ret['success'] = true;
 			$ret['confirm'] = $confirm;
-			if($u && $u[0]['account_service_class'])
+			if ($u && $u[0]['account_service_class'])
 				$ret['service_class'] = $u[0]['account_service_class'];
 
 			// Set "do not track" flag if this site or this channel's profile is restricted
 			// in some way
 
-			if(intval(get_config('system','block_public')))
+			if (intval(get_config('system','block_public')))
 				$ret['DNT'] = true;
-			if(! perm_is_allowed($c[0]['channel_id'],'','view_profile'))
+			if (! perm_is_allowed($c[0]['channel_id'],'','view_profile'))
 				$ret['DNT'] = true;
-			if(get_pconfig($c[0]['channel_id'],'system','do_not_track'))
+			if (get_pconfig($c[0]['channel_id'],'system','do_not_track'))
 				$ret['DNT'] = true;
-			if(get_pconfig($c[0]['channel_id'],'system','hide_online_status'))
+			if (get_pconfig($c[0]['channel_id'],'system','hide_online_status'))
 				$ret['DNT'] = true;
 
 			json_return_and_die($ret);
-
 		}
 		json_return_and_die($ret);
 	}
 
-	if($msgtype === 'request') {
+	if ($msgtype === 'request') {
 		// request a particular post/conversation by message_id
 		$x = zot_process_message_request($data);
 		json_return_and_die($x);		
 	}
 
-
-	if($msgtype === 'purge') {
-		if($recipients) {
+	if ($msgtype === 'purge') {
+		if ($recipients) {
 			// basically this means "unfriend"
-			foreach($recipients as $recip) {
+			foreach ($recipients as $recip) {
 				$r = q("select channel.*,xchan.* from channel 
 					left join xchan on channel_hash = xchan_hash
 					where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
 					dbesc($recip['guid']),
 					dbesc($recip['guid_sig'])
 				);
-				if($r) {
+				if ($r) {
 					$r = q("select abook_id from abook where uid = %d and abook_xchan = '%s' limit 1",
 						intval($r[0]['channel_id']),
 						dbesc(make_xchan_hash($sender['guid'],$sender['guid_sig']))
 					);
-					if($r) {
+					if ($r) {
 						contact_remove($r[0]['channel_id'],$r[0]['abook_id']);
 					}
 				}
 			}
-		}
-		else {
+		} else {
 			// Unfriend everybody - basically this means the channel has committed suicide
 			$arr = $data['sender'];
 			$sender_hash = make_xchan_hash($arr['guid'],$arr['guid_sig']);
-		
+
 			require_once('include/Contact.php');
 			remove_all_xchan_resources($sender_hash);	
 
 			$ret['success'] = true;
 			json_return_and_die($ret);
-
 		}
 	}
 
-	if(($msgtype === 'refresh') || ($msgtype === 'force_refresh')) {
+	if (($msgtype === 'refresh') || ($msgtype === 'force_refresh')) {
 
 		// remote channel info (such as permissions or photo or something)
 		// has been updated. Grab a fresh copy and sync it.
@@ -894,11 +886,11 @@ function post_post(&$a) {
 		// force_refresh unconditionally creates a directory update record,
 		// even if no changes were detected upon processing.
 
-		if($recipients) {
+		if ($recipients) {
 
 			// This would be a permissions update, typically for one connection
 
-			foreach($recipients as $recip) {	
+			foreach ($recipients as $recip) {
 				$r = q("select channel.*,xchan.* from channel 
 					left join xchan on channel_hash = xchan_hash
 					where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
@@ -910,44 +902,37 @@ function post_post(&$a) {
 						'xchan_guid'     => $sender['guid'], 
 						'xchan_guid_sig' => $sender['guid_sig'],
 						'hubloc_url'     => $sender['url']
-				),$r[0], (($msgtype === 'force_refresh') ? true : false));
+				), $r[0], (($msgtype === 'force_refresh') ? true : false));
 			}
-		}
-		else {
+		} else {
 
 			// system wide refresh
-				
+
 			$x = zot_refresh(array(
 				'xchan_guid'     => $sender['guid'], 
 				'xchan_guid_sig' => $sender['guid_sig'],
 				'hubloc_url'     => $sender['url']
-			),null,(($msgtype === 'force_refresh') ? true : false));
+			), null, (($msgtype === 'force_refresh') ? true : false));
 		}
 		$ret['success'] = true;
 		json_return_and_die($ret);
 	}
 
-	if($msgtype === 'notify') {
+	if ($msgtype === 'notify') {
 		$async = get_config('system','queued_fetch');
 
-		if($async) {
+		if ($async) {
 			// add to receive queue
 			// qreceive_add($data);
-		}
-		else {
+		} else {
 			$x = zot_fetch($data);
 			$ret['delivery_report'] = $x;
 		}
 
 		$ret['success'] = true;
 		json_return_and_die($ret);
-
 	}
 
-
 	// catchall
 	json_return_and_die($ret);
-
-
 }
-
diff --git a/mod/randprof.php b/mod/randprof.php
index bddb3251a..9817685c8 100644
--- a/mod/randprof.php
+++ b/mod/randprof.php
@@ -6,6 +6,7 @@ function randprof_init(&$a) {
 	$x = random_profile();
 	if($x)
 		goaway(chanlink_url($x));
-	// FIXME this doesn't work at the moment as a fallback
+
+	/** FIXME this doesn't work at the moment as a fallback */
 	goaway($a->get_baseurl() . '/profile');
 }
diff --git a/mod/regdir.php b/mod/regdir.php
index 5331c1dd4..025be220b 100644
--- a/mod/regdir.php
+++ b/mod/regdir.php
@@ -1,18 +1,17 @@
 <?php
 
-
 /**
- * With args, register a directory server for this realm
- * With no args, return a JSON array of directory servers for this realm
-
- * FIXME: Not yet implemented: Some realms may require authentication to join their realm.
- * The RED_GLOBAL realm does not require authentication.  
+ * With args, register a directory server for this realm.
+ * With no args, return a JSON array of directory servers for this realm.
+ *
+ * @FIXME Not yet implemented: Some realms may require authentication to join their realm.
+ * The RED_GLOBAL realm does not require authentication.
  * We would then need a flag in the site table to indicate that they've been
  * validated by the PRIMARY directory for that realm. Sites claiming to be PRIMARY
- * but are not the realm PRIMARY will be marked invalid. 
+ * but are not the realm PRIMARY will be marked invalid.
+ * 
+ * @param App &$a
  */
-
-
 function regdir_init(&$a) {
 
 	$result = array('success' => false);
@@ -31,8 +30,7 @@ function regdir_init(&$a) {
 
 	if($realm === DIRECTORY_REALM) {
 		$valid = 1;
-	}
-	else {
+	} else {
 		$token = get_config('system','realm_token');
 		if($token && $access_token != $token) {
 			$result['message'] = 'This realm requires an access token';
@@ -40,19 +38,19 @@ function regdir_init(&$a) {
 		}
 		$valid = 1;
 	}
-	
+
 	$dirmode = intval(get_config('system','directory_mode'));
 
-	if($dirmode == DIRECTORY_MODE_NORMAL) {
+	if ($dirmode == DIRECTORY_MODE_NORMAL) {
 		$ret['message'] = t('This site is not a directory server');
 		json_return_and_die($ret);
 	}
 
 	$m = null;
-	if($url) {
+	if ($url) {
 		$m = parse_url($url);
 
-		if((! $m) || (! @dns_get_record($m['host'], DNS_A + DNS_CNAME + DNS_PTR)) || (! filter_var($m['host'], FILTER_VALIDATE_IP) )) {
+		if ((! $m) || (! @dns_get_record($m['host'], DNS_A + DNS_CNAME + DNS_PTR)) || (! filter_var($m['host'], FILTER_VALIDATE_IP) )) {
 			$result['message'] = 'unparseable url';
 			json_return_and_die($result);
 		}
@@ -75,31 +73,28 @@ function regdir_init(&$a) {
 		);
 
 		json_return_and_die($result);
-	}
-	else {
+	} else {
 
 		// We can put this in the sql without the condition after 31 april 2015 assuming
 		// most directory servers will have updated by then
 		// This just makes sure it happens if I forget
 
 		$sql_extra = ((datetime_convert() > datetime_convert('UTC','UTC','2015-04-31')) ? ' and site_valid = 1 ' : '' );
-		if($dirmode == DIRECTORY_MODE_STANDALONE) {
+		if ($dirmode == DIRECTORY_MODE_STANDALONE) {
 			$r = array(array('site_url' => z_root()));
-		}
-		else {
+		} else {
 			$r = q("select site_url from site where site_flags in ( 1, 2 ) and site_realm = '%s' $sql_extra ",
 				dbesc(get_directory_realm())
 			);
 		}
-		if($r) {
+		if ($r) {
 			$result['success'] = true;
 			$result['directories'] = array();
-			foreach($r as $rr)
+			foreach ($r as $rr)
 				$result['directories'][] = $rr['site_url'];
+
 			json_return_and_die($result);
 		}
 	}
 	json_return_and_die($result);
-		
-
-}			
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/mod/share.php b/mod/share.php
index 923971694..d5a389bdf 100644
--- a/mod/share.php
+++ b/mod/share.php
@@ -13,7 +13,6 @@ function share_init(&$a) {
 	if(! (local_channel() || remote_channel()))
 		killme();
 
-
 	$r = q("SELECT * from item left join xchan on author_xchan = xchan_hash WHERE id = %d  LIMIT 1",
 		intval($post_id)
 	);
@@ -30,13 +29,12 @@ function share_init(&$a) {
 	if(! $r)
 		killme();
 
-	// FIXME - we only share bbcode
+	/** @FIXME we only share bbcode */
 
 	if($r[0]['mimetype'] !== 'text/bbcode')
 		killme();
 
-	// FIXME - eventually we want to post remotely via rpost
-	// on your home site.
+	/** @FIXME eventually we want to post remotely via rpost on your home site */
 	// When that works remove this next bit:
 
 	if(! local_channel())
@@ -64,20 +62,20 @@ function share_init(&$a) {
 		echo $o;
 		killme();
 	}
-	
+
 	$observer = $a->get_observer();
 	$parsed = $observer['xchan_url'];
 	if($parsed) {
 		$post_url = $parsed['scheme'] . ':' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : '')
 			. '/rpost';
-		// FIXME - we were probably called from JS
-		// so we don't know the return page.
-		// in fact we won't be able to load the remote page.
-		// we might need an iframe
+
+		/**
+		 * @FIXME we were probably called from JS so we don't know the return page.
+		 * In fact we won't be able to load the remote page.
+		 * we might need an iframe
+		 */
 
 		$x = z_post_url($post_url, array('f' => '', 'body' => $o ));
 		killme();
 	}
-	
-
 }
diff --git a/mod/thing.php b/mod/thing.php
index 4ec10f5a6..c6b70fbb4 100644
--- a/mod/thing.php
+++ b/mod/thing.php
@@ -1,4 +1,8 @@
-<?php /** @file */
+<?php
+/**
+ * @file mod/thing.php
+ * @brief
+ */
 
 require_once('include/items.php');
 require_once('include/contact_selectors.php');
@@ -9,9 +13,6 @@ function thing_init(&$a) {
 	if(! local_channel())
 		return;
 
-
-
-
 	$account_id = $a->get_account();
 	$channel    = $a->get_channel();
 
@@ -26,19 +27,18 @@ function thing_init(&$a) {
 
 	$hash = random_string();
 
-
 	$verbs = obj_verbs();
 
-	/** 
+	/**
 	 * verbs: [0] = first person singular, e.g. "I want", [1] = 3rd person singular, e.g. "Bill wants" 
 	 * We use the first person form when creating an activity, but the third person for use in activities
-	 * FIXME: There is no accounting for verb gender for languages where this is significant. We may eventually
+	 * @FIXME There is no accounting for verb gender for languages where this is significant. We may eventually
 	 * require obj_verbs() to provide full conjugations and specify which form to use in the $_REQUEST params to this module.
 	 */
 
 	$translated_verb = $verbs[$verb][1];
 
-	/** 
+	/*
 	 * The site administrator can do things that normals cannot.
 	 * This is restricted because it will likely cause
 	 * an activitystreams protocol violation and the activity might
@@ -50,14 +50,14 @@ function thing_init(&$a) {
 	if(! $translated_verb) {
 		if(is_site_admin())
 			$translated_verb = $verb;
-	} 
-	
-	/**
+	}
+
+	/*
 	 * Things, objects: We do not provide definite (a, an) or indefinite (the) articles or singular/plural designators
 	 * That needs to be specified in your thing. e.g. Mike has "a carrot", Greg wants "balls", Bob likes "the Boston Red Sox".  
 	 */
 
-	/**
+	/*
 	 * Future work on this module might produce more complex activities with targets, e.g. Phillip likes Karen's moustache
 	 * and to describe other non-thing objects like channels, such as Karl wants Susan - where Susan represents a channel profile.
 	 */
@@ -65,8 +65,6 @@ function thing_init(&$a) {
 	if((! $name) || (! $translated_verb))
 		return;
 
-
-
 	if($term_hash) {
 		$t = q("select * from obj left join term on obj_obj = term_hash where term_hash != '' and obj_type = %d and term_hash = '%s' limit 1",
 			intval(TERM_OBJ_THING),
@@ -115,7 +113,6 @@ function thing_init(&$a) {
 		$local_photo_type = $arr[3];
 	}
 
-
 	$r = q("select * from term where uid = %d and otype = %d and type = %d and term = '%s' limit 1",
 		intval(local_channel()),
 		intval(TERM_OBJ_THING),
@@ -159,14 +156,12 @@ function thing_init(&$a) {
 
 	info( t('Thing added'));
 
-
 	if($activity) {
 		$arr = array();
 		$links = array(array('rel' => 'alternate','type' => 'text/html', 'href' => $term['url']));
 		if($local_photo)
 			$links[] = array('rel' => 'photo', 'type' => $local_photo_type, 'href' => $local_photo);
 
-
 		$objtype = ACTIVITY_OBJ_THING;
 
 		$obj = json_encode(array(
@@ -182,9 +177,8 @@ function thing_init(&$a) {
 		$arr['owner_xchan']  = $channel['channel_hash'];
 		$arr['author_xchan'] = $channel['channel_hash'];
 
-
 		$arr['item_flags'] = ITEM_ORIGIN|ITEM_WALL|ITEM_THREAD_TOP;
-	
+
 		$ulink = '[zrl=' . $channel['xchan_url'] . ']' . $channel['channel_name'] . '[/zrl]';
 		$plink = '[zrl=' . $term['url'] . ']' . $term['term'] . '[/zrl]';
 
@@ -212,14 +206,14 @@ function thing_init(&$a) {
 			else
 				$arr['allow_cid'] = '<' . get_observer_hash() . '>';
 		}
-	
+
 		$ret = post_activity_item($arr);
 	}
 }
 
 
 function thing_content(&$a) {
-	
+
 	if(argc() == 2) {
 
 		$r = q("select * from obj left join term on obj_obj = term_hash where term_hash != '' and obj_type = %d and term_hash = '%s' limit 1",
@@ -249,12 +243,10 @@ function thing_content(&$a) {
 	}
 
 	$thing_hash = '';
-	
 
 	if(argc() == 3 && argv(1) === 'edit') {
 		$thing_hash = argv(2);
 
-
 		$r = q("select * from obj left join term on obj_obj = term_hash where term_hash != '' and obj_type = %d and term_hash = '%s' limit 1",
 			intval(TERM_OBJ_THING),
 			dbesc($thing_hash)
@@ -265,7 +257,6 @@ function thing_content(&$a) {
 			return '';
 		}
 
-
 		$o .= replace_macros(get_markup_template('thing_edit.tpl'),array(
 			'$thing_hdr' => t('Edit Thing'),
 			'$multiprof' => feature_enabled(local_channel(),'multi_profiles'),
@@ -300,7 +291,6 @@ function thing_content(&$a) {
 			return '';
 		}
 
-
 		$x = q("delete from obj where obj_obj = '%s' and obj_type = %d and obj_channel = %d",
 			dbesc($thing_hash),
 			intval(TERM_OBJ_THING),
@@ -310,6 +300,7 @@ function thing_content(&$a) {
 			dbesc($thing_hash),
 			intval(local_channel())
 		);
+
 		return $o;
 	}
 
@@ -328,6 +319,4 @@ function thing_content(&$a) {
 	));
 
 	return $o;
-
-
 }
diff --git a/util/Doxyfile b/util/Doxyfile
index 44fef3838..f700c2abe 100644
--- a/util/Doxyfile
+++ b/util/Doxyfile
@@ -1,4 +1,4 @@
-INPUT = index.php boot.php mod/ include/ setup/ util/ view/
+INPUT = README.md index.php boot.php mod/ include/ util/ view/ version.inc
 RECURSIVE = YES
 PROJECT_NAME = "The RedMatrix"
 PROJECT_LOGO = images/rm-64.png
@@ -12,9 +12,12 @@ GENERATE_LATEX = NO
 EXTRACT_ALL = YES
 EXTRACT_PRIVATE = YES
 GENERATE_TODOLIST = YES
-USE_MDFILE_AS_MAINPAGE = README
+USE_MDFILE_AS_MAINPAGE = README.md
 REFERENCED_BY_RELATION = YES
 GENERATE_TREEVIEW = YES
 HTML_FOOTER = util/Doxygen.footer
 ALIASES += "license=@par License:\n"
 ALIASES += "fixme=\xrefitem fixme \"Fixme\" \"Fixme List\""
+ALIASES += "FIXME=\fixme"
+ALIASES += "TODO=\todo"
+ALIASES += "BUG=\bug"