:bulb: Improving Doxygen documentation.

Fix some Doxygen parsing errors.
Improve hooks documentation.

26 files changed, 2168 insertions, 1258 deletions

diff --git a/Zotlabs/Access/PermissionRoles.php b/Zotlabs/Access/PermissionRoles.php
index 49d478c5c..b335bf825 100644
--- a/Zotlabs/Access/PermissionRoles.php
+++ b/Zotlabs/Access/PermissionRoles.php
@@ -1,12 +1,21 @@
 <?php
 
-
 namespace Zotlabs\Access;
 
-use Zotlabs\Lib as Zlib;
-
+/**
+ * @brief PermissionRoles class.
+ *
+ * @see Permissions
+ */
 class PermissionRoles {
 
+	/**
+	 * @brief PermissionRoles version.
+	 *
+	 * This must match the version in Permissions.php before permission updates can run.
+	 *
+	 * @return number
+	 */
 	static public function version() {
 		return 2;
 	}
@@ -23,12 +32,13 @@ class PermissionRoles {
 				$ret['default_collection'] = false;
 				$ret['directory_publish'] = true;
 				$ret['online'] = true;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments', 
-					'post_mail', 'chat', 'post_like', 'republish' ];
-
+					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments',
+					'post_mail', 'chat', 'post_like', 'republish'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
+
 				break;
 
 			case 'social_restricted':
@@ -36,11 +46,11 @@ class PermissionRoles {
 				$ret['default_collection'] = true;
 				$ret['directory_publish'] = true;
 				$ret['online'] = true;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments', 
-					'post_mail', 'chat', 'post_like' ];
-
+					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments',
+					'post_mail', 'chat', 'post_like'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 
 				break;
@@ -50,10 +60,11 @@ class PermissionRoles {
 				$ret['default_collection'] = true;
 				$ret['directory_publish'] = false;
 				$ret['online'] = false;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments', 
-					'post_mail', 'post_like' ];
+					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments',
+					'post_mail', 'post_like'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 				$ret['limits']['view_contacts'] = PERMS_SPECIFIC;
 				$ret['limits']['view_storage'] = PERMS_SPECIFIC;
@@ -65,12 +76,13 @@ class PermissionRoles {
 				$ret['default_collection'] = false;
 				$ret['directory_publish'] = true;
 				$ret['online'] = false;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
 					'view_pages', 'view_wiki', 'post_wall', 'post_comments', 'tag_deliver',
-					'post_mail', 'post_like' , 'republish', 'chat' ];
-
+					'post_mail', 'post_like' , 'republish', 'chat'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
+
 				break;
 
 			case 'forum_restricted':
@@ -78,11 +90,10 @@ class PermissionRoles {
 				$ret['default_collection'] = true;
 				$ret['directory_publish'] = true;
 				$ret['online'] = false;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
 					'view_pages', 'view_wiki', 'post_wall', 'post_comments', 'tag_deliver',
 					'post_mail', 'post_like' , 'chat' ];
-
 				$ret['limits'] = PermissionLimits::Std_Limits();
 
 				break;
@@ -92,12 +103,11 @@ class PermissionRoles {
 				$ret['default_collection'] = true;
 				$ret['directory_publish'] = false;
 				$ret['online'] = false;
-
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
 					'view_pages', 'view_wiki', 'post_wall', 'post_comments',
-					'post_mail', 'post_like' , 'chat' ];
-
+					'post_mail', 'post_like' , 'chat'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 				$ret['limits']['view_profile']  = PERMS_SPECIFIC;
 				$ret['limits']['view_contacts'] = PERMS_SPECIFIC;
@@ -112,12 +122,11 @@ class PermissionRoles {
 				$ret['default_collection'] = false;
 				$ret['directory_publish'] = true;
 				$ret['online'] = false;
-
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments', 
-					'post_mail', 'post_like' , 'republish' ];
-	
+					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments',
+					'post_mail', 'post_like' , 'republish'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 
 				break;
@@ -127,11 +136,11 @@ class PermissionRoles {
 				$ret['default_collection'] = true;
 				$ret['directory_publish'] = false;
 				$ret['online'] = false;
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments', 
-					'post_mail', 'post_like' , 'republish' ];
-
+					'view_pages', 'view_wiki', 'send_stream', 'post_wall', 'post_comments',
+					'post_mail', 'post_like' , 'republish'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 
 				break;
@@ -141,11 +150,10 @@ class PermissionRoles {
 				$ret['default_collection'] = false;
 				$ret['directory_publish'] = true;
 				$ret['online'] = false;
-
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
-					'view_pages', 'view_wiki', 'post_like' , 'republish' ];
-
+					'view_pages', 'view_wiki', 'post_like' , 'republish'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
 
 				break;
@@ -155,13 +163,13 @@ class PermissionRoles {
 				$ret['default_collection'] = false;
 				$ret['directory_publish'] = true;
 				$ret['online'] = false;
-
-				$ret['perms_connect'] = [ 
+				$ret['perms_connect'] = [
 					'view_stream', 'view_profile', 'view_contacts', 'view_storage',
 					'view_pages', 'view_wiki', 'write_storage', 'write_pages', 'post_wall', 'post_comments', 'tag_deliver',
-					'post_mail', 'post_like' , 'republish', 'chat', 'write_wiki' ];
-
+					'post_mail', 'post_like' , 'republish', 'chat', 'write_wiki'
+				];
 				$ret['limits'] = PermissionLimits::Std_Limits();
+
 				break;
 
 			case 'custom':
@@ -170,11 +178,15 @@ class PermissionRoles {
 		}
 
 		$x = get_config('system','role_perms');
-		// let system settings over-ride any or all 
+		// let system settings over-ride any or all
 		if($x && is_array($x) && array_key_exists($role,$x))
 			$ret = array_merge($ret,$x[$role]);
 
-		call_hooks('get_role_perms',$ret);
+		/**
+		 * @hooks get_role_perms
+		 *   * \e array
+		 */
+		call_hooks('get_role_perms', $ret);
 
 		return $ret;
 	}
@@ -187,10 +199,10 @@ class PermissionRoles {
 		//     \Zotlabs\Access\PermissionLimits::Set($uid,$perm,1);
 
 		if($perm === 'view_wiki')
-		     \Zotlabs\Access\PermissionLimits::Set($uid,$perm,PERMS_PUBLIC);
+			\Zotlabs\Access\PermissionLimits::Set($uid, $perm, PERMS_PUBLIC);
 
 		if($perm === 'write_wiki')
-		     \Zotlabs\Access\PermissionLimits::Set($uid,$perm,PERMS_SPECIFIC);
+			\Zotlabs\Access\PermissionLimits::Set($uid, $perm, PERMS_SPECIFIC);
 
 
 		// set autoperms here if applicable
@@ -213,8 +225,6 @@ class PermissionRoles {
 			if($c) {
 				set_abconfig($uid,$c['channel_hash'],'autoperms',$perm,$value);
 			}
-
-
 		}
 
 		// now set something for all existing connections.
@@ -242,38 +252,44 @@ class PermissionRoles {
 		}
 	}
 
-
+	/**
+	 * @brief Array with translated role names and grouping.
+	 *
+	 * Return an associative array with grouped role names that can be used
+	 * to create select groups like in \e field_select_grouped.tpl.
+	 *
+	 * @return array
+	 */
 	static public function roles() {
-	    $roles = [
+		$roles = [
 			t('Social Networking') => [
-				'social' => t('Social - Mostly Public'), 
-				'social_restricted' => t('Social - Restricted'), 
+				'social' => t('Social - Mostly Public'),
+				'social_restricted' => t('Social - Restricted'),
 				'social_private' => t('Social - Private')
 			],
 
 			t('Community Forum') => [
-				'forum' => t('Forum - Mostly Public'), 
-				'forum_restricted' => t('Forum - Restricted'), 
+				'forum' => t('Forum - Mostly Public'),
+				'forum_restricted' => t('Forum - Restricted'),
 				'forum_private' => t('Forum - Private')
 			],
 
 			t('Feed Republish') => [
-				'feed' => t('Feed - Mostly Public'), 
+				'feed' => t('Feed - Mostly Public'),
 				'feed_restricted' => t('Feed - Restricted')
 			],
 
 			t('Special Purpose') => [
-				'soapbox' => t('Special - Celebrity/Soapbox'), 
+				'soapbox' => t('Special - Celebrity/Soapbox'),
 				'repository' => t('Special - Group Repository')
 			],
 
 			t('Other') => [
 				'custom' => t('Custom/Expert Mode')
 			]
-    
 		];
 
-    	return $roles;
+		return $roles;
 	}
 
 }
\ No newline at end of file
diff --git a/Zotlabs/Access/Permissions.php b/Zotlabs/Access/Permissions.php
index 62c4af0ff..20ce21238 100644
--- a/Zotlabs/Access/Permissions.php
+++ b/Zotlabs/Access/Permissions.php
@@ -33,19 +33,22 @@ use Zotlabs\Lib as Zlib;
  */
 class Permissions {
 
+	/**
+	 * @brief Permissions version.
+	 *
+	 * This must match the version in PermissionRoles.php before permission updates can run.
+	 *
+	 * @return number
+	 */
 	static public function version() {
-		// This must match the version in PermissionRoles.php before permission updates can run.
 		return 2;
 	}
 
 	/**
 	 * @brief Return an array with Permissions.
 	 *
-	 * @hooks permissions_list
-	 *   * \e array \b permissions
-	 *   * \e string \b filter
-	 * @param string $filter (optional) only passed to hook permission_list
-	 * @return Associative array with permissions and short description.
+	 * @param string $filter (optional) only passed to hook permissions_list
+	 * @return array Associative array with permissions and short description.
 	 */
 	static public function Perms($filter = '') {
 
@@ -74,6 +77,11 @@ class Permissions {
 			'permissions' => $perms,
 			'filter' => $filter
 		];
+		/**
+		 * @hooks permissions_list
+		 *   * \e array \b permissions
+		 *   * \e string \b filter
+		 */
 		call_hooks('permissions_list', $x);
 
 		return($x['permissions']);
@@ -84,9 +92,7 @@ class Permissions {
 	 *
 	 * e.g. you must be authenticated.
 	 *
-	 * @hooks write_perms
-	 *   * \e array \b permissions
-	 * @return Associative array with permissions and short description.
+	 * @return array Associative array with permissions and short description.
 	 */
 	static public function BlockedAnonPerms() {
 
@@ -99,6 +105,10 @@ class Permissions {
 		}
 
 		$x = ['permissions' => $res];
+		/**
+		 * @hooks write_perms
+		 *   * \e array \b permissions
+		 */
 		call_hooks('write_perms', $x);
 
 		return($x['permissions']);
@@ -138,7 +148,7 @@ class Permissions {
 	 * to [ 0 => ['name' => 'view_stream', 'value' => 1], ... ]
 	 *
 	 * @param array $arr associative perms array 'view_stream' => 1
-	 * @return Indexed array with elements that look like
+	 * @return array Indexed array with elements that look like
 	 *   * \e string \b name the perm name (e.g. view_stream)
 	 *   * \e int \b value the value of the perm (e.g. 1)
 	 */
@@ -197,11 +207,10 @@ class Permissions {
 	 * @brief
 	 *
 	 * @param int $channel_id A channel id
-	 * @return associative array
+	 * @return array Associative array with
 	 *   * \e array \b perms Permission array
 	 *   * \e int \b automatic 0 or 1
 	 */
-
 	static public function connect_perms($channel_id) {
 
 		$my_perms = [];
diff --git a/Zotlabs/Extend/Hook.php b/Zotlabs/Extend/Hook.php
index c6f9ea850..81260ead6 100644
--- a/Zotlabs/Extend/Hook.php
+++ b/Zotlabs/Extend/Hook.php
@@ -2,7 +2,12 @@
 
 namespace Zotlabs\Extend;
 
+use App;
 
+/**
+ * @brief Hook class.
+ *
+ */
 class Hook {
 
 	static public function register($hook,$file,$function,$version = 1,$priority = 0) {
@@ -64,11 +69,14 @@ class Hook {
 		return $r;
 	}
 
-	// unregister all hooks with this file component. 
-	// Useful for addon upgrades where you want to clean out old interfaces.
-
+	/**
+	 * @brief Unregister all hooks with this file component.
+	 *
+	 * Useful for addon upgrades where you want to clean out old interfaces.
+	 *
+	 * @param string $file
+	 */
 	static public function unregister_by_file($file) {
-
 		$r = q("DELETE FROM hook WHERE file = '%s' ",
 			dbesc($file)
 		);
@@ -76,7 +84,6 @@ class Hook {
 		return $r;
 	}
 
-
 	/**
 	 * @brief Inserts a hook into a page request.
 	 *
@@ -98,7 +105,6 @@ class Hook {
 	 * @param int $priority
 	 *     currently not implemented in this function, would require the hook array to be resorted
 	 */
-
 	static public function insert($hook, $fn, $version = 0, $priority = 0) {
 		if(is_array($fn)) {
 			$fn = serialize($fn);
diff --git a/Zotlabs/Lib/ActivityStreams.php b/Zotlabs/Lib/ActivityStreams.php
index 379e78a59..2e9bb0703 100644
--- a/Zotlabs/Lib/ActivityStreams.php
+++ b/Zotlabs/Lib/ActivityStreams.php
@@ -2,6 +2,11 @@
 
 namespace Zotlabs\Lib;
 
+/**
+ * @brief ActivityStreams class.
+ *
+ * Parses an ActivityStream JSON string.
+ */
 class ActivityStreams {
 
 	public $data;
@@ -19,9 +24,16 @@ class ActivityStreams {
 	public $recips = null;
 	public $raw_recips = null;
 
+	/**
+	 * @brief Constructor for ActivityStreams.
+	 *
+	 * Takes a JSON string as parameter, decodes it and sets up this object.
+	 *
+	 * @param string $string
+	 */
 	function __construct($string) {
 
-		$this->data = json_decode($string,true);
+		$this->data = json_decode($string, true);
 		if($this->data) {
 			$this->valid = true;
 		}
@@ -50,6 +62,11 @@ class ActivityStreams {
 		}
 	}
 
+	/**
+	 * @brief Return if instantiated ActivityStream is valid.
+	 *
+	 * @return boolean Return true if the JSON string could be decoded.
+	 */
 	function is_valid() {
 		return $this->valid;
 	}
@@ -58,18 +75,26 @@ class ActivityStreams {
 		$this->saved_recips = $arr;
 	}
 
-	function collect_recips($base = '',$namespace = '') {
+	/**
+	 * @brief Collects all recipients.
+	 *
+	 * @param string $base
+	 * @param string $namespace (optional) default empty
+	 * @return array
+	 */
+	function collect_recips($base = '', $namespace = '') {
 		$x = [];
-		$fields = [ 'to','cc','bto','bcc','audience'];
+		$fields = [ 'to', 'cc', 'bto', 'bcc', 'audience'];
 		foreach($fields as $f) {
-			$y = $this->get_compound_property($f,$base,$namespace);
+			$y = $this->get_compound_property($f, $base, $namespace);
 			if($y) {
-				$x = array_merge($x,$y);
+				$x = array_merge($x, $y);
 				if(! is_array($this->raw_recips))
 					$this->raw_recips = [];
+
 				$this->raw_recips[$f] = $x;
 			}
-		}						
+		}
 // not yet ready for prime time
 //		$x = $this->expand($x,$base,$namespace);
 		return $x;
@@ -96,23 +121,30 @@ class ActivityStreams {
 			}
 		}
 
-		// @fixme de-duplicate
+		/// @fixme de-duplicate
 
 		return $ret;
 	}
 
-	function get_namespace($base,$namespace) {
+	/**
+	 * @brief
+	 *
+	 * @param array $base
+	 * @param string $namespace if not set return empty string
+	 * @return string|NULL
+	 */
+	function get_namespace($base, $namespace) {
 
 		if(! $namespace)
 			return '';
 
 		$key = null;
 
-
 		foreach( [ $this->data, $base ] as $b ) {
 			if(! $b)
 				continue;
-			if(array_key_exists('@context',$b)) {
+
+			if(array_key_exists('@context', $b)) {
 				if(is_array($b['@context'])) {
 					foreach($b['@context'] as $ns) {
 						if(is_array($ns)) {
@@ -135,19 +167,35 @@ class ActivityStreams {
 				}
 			}
 		}
+
 		return $key;
 	}
 
-
-	function get_property_obj($property,$base = '',$namespace = '' ) {
-		$prefix = $this->get_namespace($base,$namespace);
+	/**
+	 * @brief
+	 *
+	 * @param string $property
+	 * @param array $base (optional)
+	 * @param string $namespace (optional) default empty
+	 * @return NULL|mixed
+	 */
+	function get_property_obj($property, $base = '', $namespace = '') {
+		$prefix = $this->get_namespace($base, $namespace);
 		if($prefix === null)
-			return null;	
+			return null;
+
 		$base = (($base) ? $base : $this->data);
 		$propname = (($prefix) ? $prefix . ':' : '') . $property;
-		return ((array_key_exists($propname,$base)) ? $base[$propname] : null);
+
+		return ((array_key_exists($propname, $base)) ? $base[$propname] : null);
 	}
 
+	/**
+	 * @brief Fetches a property from an URL.
+	 *
+	 * @param string $url
+	 * @return NULL|mixed
+	 */
 	function fetch_property($url) {
 		$redirects = 0;
 		if(! check_siteallowed($url)) {
@@ -155,44 +203,70 @@ class ActivityStreams {
 			return null;
 		}
 
-		$x = z_fetch_url($url,true,$redirects,
+		$x = z_fetch_url($url, true, $redirects,
 			['headers' => [ 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams", application/activity+json' ]]);
 		if($x['success'])
-			return json_decode($x['body'],true);
+			return json_decode($x['body'], true);
+
 		return null;
 	}
 
-	function get_compound_property($property,$base = '',$namespace = '') {
-		$x = $this->get_property_obj($property,$base,$namespace);
+	/**
+	 * @brief
+	 *
+	 * @param string $property
+	 * @param array $base
+	 * @param string $namespace (optional) default empty
+	 * @return NULL|mixed
+	 */
+	function get_compound_property($property, $base = '', $namespace = '') {
+		$x = $this->get_property_obj($property, $base, $namespace);
 		if($this->is_url($x)) {
-			$x = $this->fetch_property($x); 	
+			$x = $this->fetch_property($x);
 		}
+
 		return $x;
 	}
 
+	/**
+	 * @brief Check if string starts with http.
+	 *
+	 * @param string $url
+	 * @return boolean
+	 */
 	function is_url($url) {
-		if(($url) && (! is_array($url)) && (strpos($url,'http') === 0)) {
+		if(($url) && (! is_array($url)) && (strpos($url, 'http') === 0)) {
 			return true;
 		}
+
 		return false;
 	}
 
-	function get_primary_type($base = '',$namespace = '') {
+	/**
+	 * @brief Gets the type property.
+	 *
+	 * @param array $base
+	 * @param string $namespace (optional) default empty
+	 * @return NULL|mixed
+	 */
+	function get_primary_type($base = '', $namespace = '') {
 		if(! $base)
 			$base = $this->data;
-		$x = $this->get_property_obj('type',$base,$namespace);
+
+		$x = $this->get_property_obj('type', $base, $namespace);
 		if(is_array($x)) {
 			foreach($x as $y) {
-				if(strpos($y,':') === false) {
+				if(strpos($y, ':') === false) {
 					return $y;
 				}
 			}
 		}
+
 		return $x;
 	}
 
 	function debug() {
-		$x = var_export($this,true);
+		$x = var_export($this, true);
 		return $x;
 	}
 
diff --git a/Zotlabs/Lib/Chatroom.php b/Zotlabs/Lib/Chatroom.php
index e1a9a10b3..e762620ae 100644
--- a/Zotlabs/Lib/Chatroom.php
+++ b/Zotlabs/Lib/Chatroom.php
@@ -2,22 +2,18 @@
 namespace Zotlabs\Lib;
 
 /**
- * @brief Chat related functions.
+ * @brief A class with chatroom related static methods.
  */
-
-
-
 class Chatroom {
 	/**
 	 * @brief Creates a chatroom.
 	 *
 	 * @param array $channel
 	 * @param array $arr
-	 * @return An associative array containing:
-	 *  - success: A boolean
-	 *  - message: (optional) A string
+	 * @return array An associative array containing:
+	 *   * \e boolean \b success - A boolean success status
+	 *   * \e string \b message - (optional) A string
 	 */
-
 	static public function create($channel, $arr) {
 
 		$ret = array('success' => false);
@@ -150,8 +146,8 @@ class Chatroom {
 		}
 
 		if(intval($x[0]['cr_expire'])) {
-			$r = q("delete from chat where created < %s - INTERVAL %s and chat_room = %d", 
-				db_utcnow(), 
+			$r = q("delete from chat where created < %s - INTERVAL %s and chat_room = %d",
+				db_utcnow(),
 				db_quoteinterval( intval($x[0]['cr_expire']) . ' MINUTE' ),
 				intval($x[0]['cr_id'])
 			);
@@ -225,10 +221,16 @@ class Chatroom {
 	}
 
 	/**
-	 * create a chat message via API.
+	 * @brief Create a chat message via API.
+	 *
 	 * It is the caller's responsibility to enter the room.
- 	*/
-
+	 *
+	 * @param int $uid
+	 * @param int $room_id
+	 * @param string $xchan
+	 * @param string $text
+	 * @return array
+	 */
 	static public function message($uid, $room_id, $xchan, $text) {
 
 		$ret = array('success' => false);
@@ -245,12 +247,18 @@ class Chatroom {
 		if(! $r)
 			return $ret;
 
-		$arr = array(
+		$arr = [
 			'chat_room' => $room_id,
 			'chat_xchan' => $xchan,
 			'chat_text' => $text
-		);
-
+		];
+		/**
+		 * @hooks chat_message
+		 *   Called to create a chat message.
+		 *   * \e int \b chat_room
+		 *   * \e string \b chat_xchan
+		 *   * \e string \b chat_text
+		 */
 		call_hooks('chat_message', $arr);
 
 		$x = q("insert into chat ( chat_room, chat_xchan, created, chat_text )
diff --git a/Zotlabs/Lib/Config.php b/Zotlabs/Lib/Config.php
index 6e042feba..f9f22ba3a 100644
--- a/Zotlabs/Lib/Config.php
+++ b/Zotlabs/Lib/Config.php
@@ -1,4 +1,4 @@
-<?php /** @file */
+<?php
 
 namespace Zotlabs\Lib;
 
@@ -14,7 +14,6 @@ class Config {
 	 * @param string $family
 	 *  The category of the configuration value
 	 */
-
 	static public function Load($family) {
 		if(! array_key_exists($family, \App::$config))
 			\App::$config[$family] = array();
@@ -30,7 +29,7 @@ class Config {
 				}
 				\App::$config[$family]['config_loaded'] = true;
 			}
-		} 
+		}
 	}
 
 	/**
@@ -47,8 +46,7 @@ class Config {
 	 * @return mixed
 	 *  Return the set value, or false if the database update failed
 	 */
-
-	static public function Set($family,$key,$value) {
+	static public function Set($family, $key, $value) {
 		// manage array value
 		$dbvalue = ((is_array($value))  ? serialize($value) : $value);
 		$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue)  : $dbvalue);
@@ -76,8 +74,8 @@ class Config {
 			\App::$config[$family][$key] = $value;
 			$ret = $value;
 		}
-		return $ret;
 
+		return $ret;
 	}
 
 	/**
@@ -88,25 +86,25 @@ class Config {
 	 * $key from a cached storage in App::$config[$family]. If a key is found in the
 	 * DB but does not exist in local config cache, pull it into the cache so we
 	 * do not have to hit the DB again for this item.
-	 * 
+	 *
 	 * Returns false if not set.
 	 *
 	 * @param string $family
 	 *  The category of the configuration value
 	 * @param string $key
 	 *  The configuration key to query
+	 * @param string $default (optional) default false
 	 * @return mixed Return value or false on error or if not set
 	 */
-
-	static public function Get($family,$key,$default = false) {
+	static public function Get($family, $key, $default = false) {
 		if((! array_key_exists($family, \App::$config)) || (! array_key_exists('config_loaded', \App::$config[$family])))
 			self::Load($family);
 
 		if(array_key_exists('config_loaded', \App::$config[$family])) {
 			if(! array_key_exists($key, \App::$config[$family])) {
-				return $default;		
+				return $default;
 			}
-			return ((! is_array(\App::$config[$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$family][$key])) 
+			return ((! is_array(\App::$config[$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$family][$key]))
 				? unserialize(\App::$config[$family][$key])
 				: \App::$config[$family][$key]
 			);
@@ -127,17 +125,18 @@ class Config {
 	 *  The configuration key to delete
 	 * @return mixed
 	 */
-
-	static public function Delete($family,$key) {
+	static public function Delete($family, $key) {
 
 		$ret = false;
 
 		if(array_key_exists($family, \App::$config) && array_key_exists($key, \App::$config[$family]))
 			unset(\App::$config[$family][$key]);
-			$ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s'",
+
+		$ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s'",
 			dbesc($family),
 			dbesc($key)
 		);
+
 		return $ret;
 	}
 
@@ -154,12 +153,12 @@ class Config {
 	 *  The configuration key to query
 	 * @return mixed
 	 */
-
 	static private function get_from_storage($family,$key) {
 		$ret = q("SELECT * FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
 			dbesc($family),
 			dbesc($key)
 		);
+
 		return $ret;
 	}
 
diff --git a/Zotlabs/Lib/PConfig.php b/Zotlabs/Lib/PConfig.php
index 2a0b18aac..ec0792ce1 100644
--- a/Zotlabs/Lib/PConfig.php
+++ b/Zotlabs/Lib/PConfig.php
@@ -1,8 +1,21 @@
-<?php /** @file */
+<?php
 
 namespace Zotlabs\Lib;
 
-
+/**
+ * @brief Class for handling channel specific configurations.
+ *
+ * <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{.php}$var = Zotlabs\Lib\PConfig::Get('uid', 'category', 'key');
+ * // with default value for non existent key
+ * $var = Zotlabs\Lib\PConfig::Get('uid', 'category', 'unsetkey', 'defaultvalue');@endcode
+ *
+ * The old (deprecated?) way to access a PConfig value is:
+ * @code{.php}$var = get_pconfig(local_channel(), 'category', 'key');@endcode
+ */
 class PConfig {
 
 	/**
@@ -13,9 +26,8 @@ class PConfig {
 	 *
 	 * @param string $uid
 	 *  The channel_id
-	 * @return void|false Nothing or false if $uid is false
+	 * @return void|false Nothing or false if $uid is null or false
 	 */
-
 	static public function Load($uid) {
 		if(is_null($uid) || $uid === false)
 			return false;
@@ -64,11 +76,11 @@ class PConfig {
 	 *  The category of the configuration value
 	 * @param string $key
 	 *  The configuration key to query
-	 * @param boolean $instore (deprecated, without function)
+	 * @param mixed $default (optional, default false)
+	 *  Default value to return if key does not exist
 	 * @return mixed Stored value or false if it does not exist
 	 */
-
-	static public function Get($uid,$family,$key,$default = false) {
+	static public function Get($uid, $family, $key, $default = false) {
 
 		if(is_null($uid) || $uid === false)
 			return $default;
@@ -79,11 +91,10 @@ class PConfig {
 		if((! array_key_exists($family, \App::$config[$uid])) || (! array_key_exists($key, \App::$config[$uid][$family])))
 			return $default;
 
-		return ((! is_array(\App::$config[$uid][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$uid][$family][$key])) 
+		return ((! is_array(\App::$config[$uid][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$uid][$family][$key]))
 			? unserialize(\App::$config[$uid][$family][$key])
 			: \App::$config[$uid][$family][$key]
 		);
-
 	}
 
 	/**
@@ -102,12 +113,11 @@ class PConfig {
 	 *  The value to store
 	 * @return mixed Stored $value or false
 	 */
-
 	static public function Set($uid, $family, $key, $value) {
 
-		// this catches subtle errors where this function has been called 
+		// this catches subtle errors where this function has been called
 		// with local_channel() when not logged in (which returns false)
-		// and throws an error in array_key_exists below. 
+		// and throws an error in array_key_exists below.
 		// we provide a function backtrace in the logs so that we can find
 		// and fix the calling function.
 
@@ -132,7 +142,6 @@ class PConfig {
 				dbesc($key),
 				dbesc($dbvalue)
 			);
-
 		}
 		else {
 
@@ -142,7 +151,6 @@ class PConfig {
 				dbesc($family),
 				dbesc($key)
 			);
-
 		}
 
 		// keep a separate copy for all variables which were
@@ -178,7 +186,6 @@ class PConfig {
 	 *  The configuration key to delete
 	 * @return mixed
 	 */
- 
 	static public function Delete($uid, $family, $key) {
 
 		if(is_null($uid) || $uid === false)
@@ -186,12 +193,12 @@ class PConfig {
 
 		$ret = false;
 
-		if(array_key_exists($uid,\App::$config) 
-			&& is_array(\App::$config['uid']) 
-			&& array_key_exists($family,\App::$config['uid']) 
+		if(array_key_exists($uid,\App::$config)
+			&& is_array(\App::$config['uid'])
+			&& array_key_exists($family,\App::$config['uid'])
 			&& array_key_exists($key, \App::$config[$uid][$family]))
 			unset(\App::$config[$uid][$family][$key]);
-			
+
 		$ret = q("DELETE FROM pconfig WHERE uid = %d AND cat = '%s' AND k = '%s'",
 			intval($uid),
 			dbesc($family),
@@ -202,4 +209,3 @@ class PConfig {
 	}
 
 }
-		
\ No newline at end of file
diff --git a/Zotlabs/Lib/SConfig.php b/Zotlabs/Lib/SConfig.php
index ca0d133b2..ab6f49025 100644
--- a/Zotlabs/Lib/SConfig.php
+++ b/Zotlabs/Lib/SConfig.php
@@ -2,8 +2,11 @@
 
 namespace Zotlabs\Lib;
 
-// account configuration storage is built on top of the under-utilised xconfig
-
+/**
+ * @brief Account configuration storage is built on top of the under-utilised xconfig.
+ *
+ * @see XConfig
+ */
 class SConfig {
 
 	static public function Load($server_id) {
diff --git a/Zotlabs/Lib/XConfig.php b/Zotlabs/Lib/XConfig.php
index bf78c360f..c5a108ac9 100644
--- a/Zotlabs/Lib/XConfig.php
+++ b/Zotlabs/Lib/XConfig.php
@@ -2,7 +2,26 @@
 
 namespace Zotlabs\Lib;
 
-
+/**
+ * @brief Class for handling observer's config.
+ *
+ * <b>XConfig</b> is comparable to <i>PConfig</i>, except that it uses <i>xchan</i>
+ * (an observer hash) as an identifier.
+ *
+ * <b>XConfig</b> is used for observer specific configurations and takes a
+ * <i>xchan</i> as identifier.
+ * The storage is of size MEDIUMTEXT.
+ *
+ * @code{.php}$var = Zotlabs\Lib\XConfig::Get('xchan', 'category', 'key');
+ * // with default value for non existent key
+ * $var = Zotlabs\Lib\XConfig::Get('xchan', 'category', 'unsetkey', 'defaultvalue');@endcode
+ *
+ * The old (deprecated?) way to access a XConfig value is:
+ * @code{.php}$observer = App::get_observer_hash();
+ * if ($observer) {
+ *     $var = get_xconfig($observer, 'category', 'key');
+ * }@endcode
+ */
 class XConfig {
 
 	/**
@@ -15,7 +34,6 @@ class XConfig {
 	 *  The observer's hash
 	 * @return void|false Returns false if xchan is not set
 	 */
-
 	static public function Load($xchan) {
 
 		if(! $xchan)
@@ -56,9 +74,9 @@ class XConfig {
 	 *  The category of the configuration value
 	 * @param string $key
 	 *  The configuration key to query
+	 * @param boolean $default (optional) default false
 	 * @return mixed Stored $value or false if it does not exist
 	 */
-
 	static public function Get($xchan, $family, $key, $default = false) {
 
 		if(! $xchan)
@@ -70,7 +88,7 @@ class XConfig {
 		if((! array_key_exists($family, \App::$config[$xchan])) || (! array_key_exists($key, \App::$config[$xchan][$family])))
 			return $default;
 
-		return ((! is_array(\App::$config[$xchan][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$xchan][$family][$key])) 
+		return ((! is_array(\App::$config[$xchan][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$xchan][$family][$key]))
 			? unserialize(\App::$config[$xchan][$family][$key])
 			: \App::$config[$xchan][$family][$key]
 		);
@@ -82,7 +100,6 @@ class XConfig {
 	 * Stores a config value ($value) in the category ($family) under the key ($key)
 	 * for the observer's $xchan hash.
 	 *
-	 *
 	 * @param string $xchan
 	 *  The observer's hash
 	 * @param string $family
@@ -93,7 +110,6 @@ class XConfig {
 	 *  The value to store
 	 * @return mixed Stored $value or false
 	 */
-
 	static public function Set($xchan, $family, $key, $value) {
 
 		// manage array value
@@ -106,7 +122,7 @@ class XConfig {
 			if(! array_key_exists($family, \App::$config[$xchan]))
 				\App::$config[$xchan][$family] = array();
 
-			$ret = q("INSERT INTO xconfig ( xchan, cat, k, v ) VALUES ( '%s', '%s', '%s', '%s' ) ",
+			$ret = q("INSERT INTO xconfig ( xchan, cat, k, v ) VALUES ( '%s', '%s', '%s', '%s' )",
 				dbesc($xchan),
 				dbesc($family),
 				dbesc($key),
@@ -126,6 +142,7 @@ class XConfig {
 
 		if($ret)
 			return $value;
+
 		return $ret;
 	}
 
@@ -143,11 +160,11 @@ class XConfig {
 	 *  The configuration key to delete
 	 * @return mixed
 	 */
-
 	static public function Delete($xchan, $family, $key) {
 
 		if(x(\App::$config[$xchan][$family], $key))
 			unset(\App::$config[$xchan][$family][$key]);
+
 		$ret = q("DELETE FROM xconfig WHERE xchan = '%s' AND cat = '%s' AND k = '%s'",
 			dbesc($xchan),
 			dbesc($family),
diff --git a/Zotlabs/Render/Comanche.php b/Zotlabs/Render/Comanche.php
index 78ca870a7..cd06e11a8 100644
--- a/Zotlabs/Render/Comanche.php
+++ b/Zotlabs/Render/Comanche.php
@@ -5,10 +5,20 @@ namespace Zotlabs\Render;
 require_once('include/security.php');
 require_once('include/menu.php');
 
-
+/**
+ * @brief Comanche Page Description Language.
+ *
+ * Comanche is a markup language similar to bbcode with which to create elaborate
+ * and complex web pages by assembling them from a series of components - some of
+ * which are pre-built and others which can be defined on the fly. Comanche uses
+ * a Page Decription Language to create these pages.
+ *
+ * Comanche primarily chooses what content will appear in various regions of the
+ * page. The various regions have names and these names can change depending on
+ * what layout template you choose.
+ */
 class Comanche {
 
-
 	function parse($s, $pass = 0) {
 		$matches = array();
 
@@ -18,13 +28,13 @@ class Comanche {
 				$s = str_replace($mtch[0], '', $s);
 			}
 		}
-		
+
 		/*
-		 * This section supports the "switch" statement of the form given by the following 
-		 * example. The [default][/default] block must be the last in the arbitrary 
+		 * This section supports the "switch" statement of the form given by the following
+		 * example. The [default][/default] block must be the last in the arbitrary
 		 * list of cases. The first case that matches the switch variable is used
 		 * and the rest are not evaluated.
-		 * 
+		 *
 		 * [switch observer.language]
 		 * [case de]
 		 *   [block]german-content[/block]
@@ -37,7 +47,7 @@ class Comanche {
 		 * [/default]
 		 * [/switch]
 		 */
-		
+
 		$cnt = preg_match_all("/\[switch (.*?)\](.*?)\[default\](.*?)\[\/default\]\s*\[\/switch\]/ism", $s, $matches, PREG_SET_ORDER);
 		if($cnt) {
 			foreach($matches as $mtch) {
@@ -60,7 +70,7 @@ class Comanche {
 				}
 			}
 		}
-		
+
 		$cnt = preg_match_all("/\[if (.*?)\](.*?)\[else\](.*?)\[\/if\]/ism", $s, $matches, PREG_SET_ORDER);
 		if($cnt) {
 			foreach($matches as $mtch) {
@@ -89,7 +99,6 @@ class Comanche {
 			$this->parse_pass0($s);
 		else
 			$this->parse_pass1($s);
-
 	}
 
 	function parse_pass0($s) {
@@ -103,7 +112,7 @@ class Comanche {
 		$cnt = preg_match("/\[template=(.*?)\](.*?)\[\/template\]/ism", $s, $matches);
 		if($cnt) {
 			\App::$page['template'] = trim($matches[2]);
-			\App::$page['template_style'] = trim($matches[2]) . '_' . $matches[1]; 
+			\App::$page['template_style'] = trim($matches[2]) . '_' . $matches[1];
 		}
 
 		$cnt = preg_match("/\[template\](.*?)\[\/template\]/ism", $s, $matches);
@@ -145,20 +154,23 @@ class Comanche {
 	}
 
 	/**
+	 * @brief Replace conditional variables with real values.
+	 *
 	 * Currently supported condition variables:
+	 *   * $config.xxx.yyy - get_config with cat = xxx and k = yyy
+	 *   * $request - request uri for this page
+	 *   * $observer.language - viewer's preferred language (closest match)
+	 *   * $observer.address - xchan_addr or false
+	 *   * $observer.name - xchan_name or false
+	 *   * $observer - xchan_hash of observer or empty string
+	 *   * $local_channel - logged in channel_id or false
 	 *
-	 * $config.xxx.yyy - get_config with cat = xxx and k = yyy
-	 * $request - request uri for this page
-	 * $observer.language - viewer's preferred language (closest match)
-	 * $observer.address - xchan_addr or false
-	 * $observer.name - xchan_name or false
-	 * $observer - xchan_hash of observer or empty string
-	 * $local_channel - logged in channel_id or false
+	 * @param string $v The conditional variable name
+	 * @return string|boolean
 	 */
-
 	function get_condition_var($v) {
 		if($v) {
-			$x = explode('.',$v);
+			$x = explode('.', $v);
 			if($x[0] == 'config')
 				return get_config($x[1],$x[2]);
 			elseif($x[0] === 'request')
@@ -179,6 +191,7 @@ class Comanche {
 						return $y['xchan_name'];
 					elseif($x[1] == 'webname')
 						return substr($y['xchan_addr'],0,strpos($y['xchan_addr'],'@'));
+
 					return false;
 				}
 				return get_observer_hash();
@@ -186,30 +199,39 @@ class Comanche {
 			else
 				return false;
 		}
+
 		return false;
 	}
 
+	/**
+	 * @brief Test for Conditional Execution conditions.
+	 *
+	 * This is extensible. The first version of variable testing supports tests of the forms:
+	 *
+	 * - [if $config.system.foo ~= baz] which will check if get_config('system','foo') contains the string 'baz';
+	 * - [if $config.system.foo == baz] which will check if get_config('system','foo') is the string 'baz';
+	 * - [if $config.system.foo != baz] which will check if get_config('system','foo') is not the string 'baz';
+	 * - [if $config.system.foo >= 3] which will check if get_config('system','foo') is greater than or equal to 3;
+	 * - [if $config.system.foo > 3] which will check if get_config('system','foo') is greater than 3;
+	 * - [if $config.system.foo <= 3] which will check if get_config('system','foo') is less than or equal to 3;
+	 * - [if $config.system.foo < 3] which will check if get_config('system','foo') is less than 3;
+	 *
+	 * - [if $config.system.foo {} baz] which will check if 'baz' is an array element in get_config('system','foo')
+	 * - [if $config.system.foo {*} baz] which will check if 'baz' is an array key in get_config('system','foo')
+	 * - [if $config.system.foo] which will check for a return of a true condition for get_config('system','foo');
+	 *
+	 * The values 0, '', an empty array, and an unset value will all evaluate to false.
+	 *
+	 * @param int|string $s
+	 * @return boolean
+	 */
 	function test_condition($s) {
-		// This is extensible. The first version of variable testing supports tests of the forms:
-
-		// [if $config.system.foo ~= baz] which will check if get_config('system','foo') contains the string 'baz';
-		// [if $config.system.foo == baz] which will check if get_config('system','foo') is the string 'baz';
-		// [if $config.system.foo != baz] which will check if get_config('system','foo') is not the string 'baz';
-		// [if $config.system.foo >= 3] which will check if get_config('system','foo') is greater than or equal to 3;
-		// [if $config.system.foo > 3] which will check if get_config('system','foo') is greater than 3;
-
-		// [if $config.system.foo <= 3] which will check if get_config('system','foo') is less than or equal to 3;
-		// [if $config.system.foo < 3] which will check if get_config('system','foo') is less than 3;
-
-		// [if $config.system.foo {} baz] which will check if 'baz' is an array element in get_config('system','foo')
-		// [if $config.system.foo {*} baz] which will check if 'baz' is an array key in get_config('system','foo')
-		// [if $config.system.foo] which will check for a return of a true condition for get_config('system','foo');
-		// The values 0, '', an empty array, and an unset value will all evaluate to false.
 
 		if(preg_match('/[\$](.*?)\s\~\=\s(.*?)$/',$s,$matches)) {
 			$x = $this->get_condition_var($matches[1]);
 			if(stripos($x,trim($matches[2])) !== false)
 				return true;
+
 			return false;
 		}
 
@@ -217,6 +239,7 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if($x == trim($matches[2]))
 				return true;
+
 			return false;
 		}
 
@@ -224,6 +247,7 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if($x != trim($matches[2]))
 				return true;
+
 			return false;
 		}
 
@@ -231,24 +255,31 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if($x >= trim($matches[2]))
 				return true;
+
 			return false;
 		}
+
 		if(preg_match('/[\$](.*?)\s\<\=\s(.*?)$/',$s,$matches)) {
 			$x = $this->get_condition_var($matches[1]);
 			if($x <= trim($matches[2]))
 				return true;
+
 			return false;
 		}
+
 		if(preg_match('/[\$](.*?)\s\>\s(.*?)$/',$s,$matches)) {
 			$x = $this->get_condition_var($matches[1]);
 			if($x > trim($matches[2]))
 				return true;
+
 			return false;
 		}
+
 		if(preg_match('/[\$](.*?)\s\>\s(.*?)$/',$s,$matches)) {
 			$x = $this->get_condition_var($matches[1]);
 			if($x < trim($matches[2]))
 				return true;
+
 			return false;
 		}
 
@@ -256,6 +287,7 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if(is_array($x) && in_array(trim($matches[2]),$x))
 				return true;
+
 			return false;
 		}
 
@@ -263,6 +295,7 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if(is_array($x) && array_key_exists(trim($matches[2]),$x))
 				return true;
+
 			return false;
 		}
 
@@ -270,13 +303,21 @@ class Comanche {
 			$x = $this->get_condition_var($matches[1]);
 			if($x)
 				return true;
+
 			return false;
 		}
-		return false;
 
+		return false;
 	}
 
-
+	/**
+	 * @brief Return rendered menu for current channel_id.
+	 *
+	 * @see menu_render()
+	 * @param string $s
+	 * @param string $class (optional) default empty
+	 * @return string
+	 */
 	function menu($s, $class = '') {
 
 		$channel_id = $this->get_channel_id();
@@ -291,7 +332,7 @@ class Comanche {
 		}
 
 		if($channel_id) {
-			$m = menu_fetch($name,$channel_id, get_observer_hash());
+			$m = menu_fetch($name, $channel_id, get_observer_hash());
 			return menu_render($m, $class, $edit = false, $var);
 		}
 	}
@@ -309,9 +350,8 @@ class Comanche {
 	 * 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
+	 * @return int channel_id
 	 */
-
 	function get_channel_id() {
 		$channel_id = ((is_array(\App::$profile)) ? \App::$profile['profile_uid'] : 0);
 
@@ -321,6 +361,13 @@ class Comanche {
 		return $channel_id;
 	}
 
+	/**
+	 * @brief Returns a parsed block.
+	 *
+	 * @param string $s
+	 * @param string $class (optional) default empty
+	 * @return string parsed HTML of block
+	 */
 	function block($s, $class = '') {
 		$var = array();
 		$matches = array();
@@ -339,7 +386,7 @@ class Comanche {
 		$channel_id = $this->get_channel_id();
 
 		if($channel_id) {
-			$r = q("select * from item inner join iconfig on iconfig.iid = item.id and item.uid = %d 
+			$r = q("select * from item inner join iconfig on iconfig.iid = item.id and item.uid = %d
 				and iconfig.cat = 'system' and iconfig.k = 'BUILDBLOCK' and iconfig.v = '%s' limit 1",
 				intval($channel_id),
 				dbesc($name)
@@ -381,6 +428,12 @@ class Comanche {
 		return $o;
 	}
 
+	/**
+	 * @brief Include JS depending on framework.
+	 *
+	 * @param string $s
+	 * @return string
+	 */
 	function js($s) {
 
 		switch($s) {
@@ -401,9 +454,14 @@ class Comanche {
 			$ret .= $init;
 
 		return $ret;
-
 	}
 
+	/**
+	 * @brief Include CSS depending on framework.
+	 *
+	 * @param string $s
+	 * @return string
+	 */
 	function css($s) {
 
 		switch($s) {
@@ -418,17 +476,22 @@ class Comanche {
 		$ret = '<link rel="stylesheet" href="' . z_root() . '/' . $path . '" type="text/css" media="screen">';
 
 		return $ret;
-
 	}
 
-	// This doesn't really belong in Comanche, but it could also be argued that it is the perfect place.
-	// We need to be able to select what kind of template and decoration to use for the webpage at the heart of our content.
-	// For now we'll allow an '[authored]' element which defaults to name and date, or 'none' to remove these, and perhaps
-	// 'full' to provide a social network style profile photo.
-	// But leave it open to have richer templating options and perhaps ultimately discard this one, once we have a better idea
-	// of what template and webpage options we might desire. 
-
-	function webpage(&$a,$s) {
+	/**
+	 * This doesn't really belong in Comanche, but it could also be argued that it is the perfect place.
+	 * We need to be able to select what kind of template and decoration to use for the webpage at the heart of our content.
+	 * For now we'll allow an '[authored]' element which defaults to name and date, or 'none' to remove these, and perhaps
+	 * 'full' to provide a social network style profile photo.
+	 *
+	 * But leave it open to have richer templating options and perhaps ultimately discard this one, once we have a better idea
+	 * of what template and webpage options we might desire.
+	 *
+	 * @param[in,out] array $a
+	 * @param string $s
+	 * @return array
+	 */
+	function webpage(&$a, $s) {
 		$ret = array();
 		$matches = array();
 
@@ -438,22 +501,20 @@ class Comanche {
 				$ret['authored'] = $mtch[1];
 			}
 		}
+
 		return $ret;
 	}
 
-
 	/**
-	 * Render a widget
+	 * @brief Render a widget.
 	 *
 	 * @param string $name
 	 * @param string $text
 	 */
-
 	function widget($name, $text) {
 		$vars = array();
 		$matches = array();
 
-
 		$cnt = preg_match_all("/\[var=(.*?)\](.*?)\[\/var\]/ism", $text, $matches, PREG_SET_ORDER);
 		if ($cnt) {
 			foreach ($matches as $mtch) {
@@ -480,7 +541,7 @@ class Comanche {
 			if(method_exists($x,$f)) {
 				return $x->$f($vars);
 			}
-		} 
+		}
 
 		$func = 'widget_' . trim($name);
 
@@ -563,9 +624,9 @@ class Comanche {
 	}
 
 
-	/*
-	 * @function register_page_template($arr)
-	 *   Registers a page template/variant for use by Comanche selectors
+	/**
+	 * @brief Registers a page template/variant for use by Comanche selectors.
+	 *
 	 * @param array $arr
 	 *    'template' => template name
 	 *    'variant' => array(
@@ -577,8 +638,6 @@ class Comanche {
 	 *           )
 	 *    )
 	 */
-
-
 	function register_page_template($arr) {
 		\App::$page_layouts[$arr['template']] = array($arr['variant']);
 		return;
diff --git a/Zotlabs/Web/Router.php b/Zotlabs/Web/Router.php
index 9486130cb..12ef315d4 100644
--- a/Zotlabs/Web/Router.php
+++ b/Zotlabs/Web/Router.php
@@ -2,6 +2,8 @@
 
 namespace Zotlabs\Web;
 
+use Exception;
+
 /**
  *
  * We have already parsed the server path into App::$argc and App::$argv
@@ -34,7 +36,7 @@ class Router {
 	private $controller = null;
 
 	/**
-	 * @brief Router constructor
+	 * @brief Router constructor.
 	 *
 	 * @param[in,out] App &$a
 	 * @throws Exception module not found
@@ -98,15 +100,23 @@ class Router {
 				}
 			}
 
-			/*
-			 * This provides a place for plugins to register module handlers which don't otherwise exist
-			 * on the system, or to completely over-ride an existing module.
-			 * If the plugin sets 'installed' to true we won't throw a 404 error for the specified module even if
-			 * there is no specific module file or matching plugin name.
-			 * The plugin should catch at least one of the module hooks for this URL.
+			$x = [
+					'module' => $module,
+					'installed' => \App::$module_loaded,
+					'controller' => $this->controller
+			];
+			/**
+			 * @hooks module_loaded
+			 *   Called when a module has been successfully locate to server a URL request.
+			 *   This provides a place for plugins to register module handlers which don't otherwise exist
+			 *   on the system, or to completely over-ride an existing module.
+			 *   If the plugin sets 'installed' to true we won't throw a 404 error for the specified module even if
+			 *   there is no specific module file or matching plugin name.
+			 *   The plugin should catch at least one of the module hooks for this URL.
+			 *   * \e string \b module
+			 *   * \e boolean \b installed
+			 *   * \e mixed \b controller - The initialized module object
 			 */
-
-			$x = array('module' => $module, 'installed' => \App::$module_loaded, 'controller' => $this->controller);
 			call_hooks('module_loaded', $x);
 			if($x['installed']) {
 				\App::$module_loaded = true;
@@ -131,14 +141,14 @@ class Router {
 					}
 				}
 
-				$x = [ 
-					'module' => $module, 
-					'installed' => \App::$module_loaded, 
+				$x = [
+					'module' => $module,
+					'installed' => \App::$module_loaded,
 					'controller' => $this->controller
 				];
 				call_hooks('page_not_found',$x);
 
-				// Stupid browser tried to pre-fetch our Javascript img template. 
+				// Stupid browser tried to pre-fetch our Javascript img template.
 				// Don't log the event or return anything - just quietly exit.
 
 				if((x($_SERVER, 'QUERY_STRING')) && preg_match('/{[0-9]}/', $_SERVER['QUERY_STRING']) !== 0) {
@@ -147,8 +157,8 @@ class Router {
 
 				if(get_config('system','log_404',true)) {
 					logger("Module {$module} not found.", LOGGER_DEBUG, LOG_WARNING);
-					logger('index.php: page not found: ' . $_SERVER['REQUEST_URI'] 
-						. ' ADDRESS: ' . $_SERVER['REMOTE_ADDR'] . ' QUERY: ' 
+					logger('index.php: page not found: ' . $_SERVER['REQUEST_URI']
+						. ' ADDRESS: ' . $_SERVER['REMOTE_ADDR'] . ' QUERY: '
 						. $_SERVER['QUERY_STRING'], LOGGER_DEBUG);
 				}
 
diff --git a/Zotlabs/Zot/Verify.php b/Zotlabs/Zot/Verify.php
index 1d9e6de3f..7abe38d17 100644
--- a/Zotlabs/Zot/Verify.php
+++ b/Zotlabs/Zot/Verify.php
@@ -26,12 +26,11 @@ class Verify {
 			q("delete from verify where id = %d",
 				intval($r[0]['id'])
 			);
-			return true; 
+			return true;
 		}
 		return false;
 	}
 
-
 	function get_meta($type,$channel_id,$token) {
 		$r = q("select id, meta from verify where vtype = '%s' and channel = %d and token = '%s' limit 1",
 			dbesc($type),
@@ -42,12 +41,18 @@ class Verify {
 			q("delete from verify where id = %d",
 				intval($r[0]['id'])
 			);
-			return $r[0]['meta']; 
+			return $r[0]['meta'];
 		}
 		return false;
 	}
 
-	function purge($type,$interval) {
+	/**
+	 * @brief Purge entries of a verify-type older than interval.
+	 *
+	 * @param string $type Verify type
+	 * @param string $interval SQL compatible time interval
+	 */
+	function purge($type, $interval) {
 		q("delete from verify where vtype = '%s' and created < %s - INTERVAL %s",
 			dbesc($type),
 			db_utcnow(),
diff --git a/boot.php b/boot.php
index 9238b38f0..d3989acd3 100755
--- a/boot.php
+++ b/boot.php
@@ -1,7 +1,8 @@
 <?php
-/** @file boot.php
+/**
+ * @file boot.php
  *
- * This file defines some global constants and includes the central App class.
+ * @brief This file defines some global constants and includes the central App class.
  */
 
 /**
@@ -95,10 +96,9 @@ $DIRECTORY_FALLBACK_SERVERS = array(
  * App::$config['system']['jpeg_quality'] = n;
  * in .htconfig.php, where n is netween 1 and 100, and with very poor results
  * below about 50
- *
  */
-
 define ( 'JPEG_QUALITY',            100  );
+
 /**
  * App::$config['system']['png_quality'] from 0 (uncompressed) to 9
  */
@@ -107,7 +107,6 @@ define ( 'PNG_QUALITY',             8  );
 /**
  * Language detection parameters
  */
-
 define ( 'LANGUAGE_DETECT_MIN_LENGTH',     128 );
 define ( 'LANGUAGE_DETECT_MIN_CONFIDENCE', 0.01 );
 
@@ -264,7 +263,6 @@ define ( 'NETWORK_LINKEDIN',         'lnkd');    // LinkedIn
 define ( 'NETWORK_XMPP',             'xmpp');    // XMPP
 define ( 'NETWORK_MYSPACE',          'mysp');    // MySpace
 define ( 'NETWORK_GPLUS',            'goog');    // Google+
-
 define ( 'NETWORK_PHANTOM',          'unkn');    // Place holder
 
 
@@ -455,8 +453,8 @@ define ( 'NAMESPACE_STATUSNET',       'http://status.net/schema/api/1/' );
 define ( 'NAMESPACE_ATOM1',           'http://www.w3.org/2005/Atom' );
 define ( 'NAMESPACE_YMEDIA',          'http://search.yahoo.com/mrss/' );
 
-// We should be using versioned jsonld contexts so that signatures will be slightly more reliable. 
-// Why signatures are unreliable by design is a problem nobody seems to care about 
+// We should be using versioned jsonld contexts so that signatures will be slightly more reliable.
+// Why signatures are unreliable by design is a problem nobody seems to care about
 // "because it's a proposed W3C standard". .
 
 // Anyway, if you use versioned contexts, communication with Mastodon fails. Have not yet investigated
@@ -642,7 +640,7 @@ function sys_boot() {
 
 		unset($db_host, $db_port, $db_user, $db_pass, $db_data, $db_type);
 
-		/**
+		/*
 		 * Load configs from db. Overwrite configs from .htconfig.php
 		 */
 
@@ -652,20 +650,21 @@ function sys_boot() {
 		App::$session = new Zotlabs\Web\Session();
 		App::$session->init();
 		load_hooks();
+		/**
+		 * @hooks init_1
+		 */
 		call_hooks('init_1');
 	}
-
 }
 
 
 /**
+ * @brief Reverse the effect of magic_quotes_gpc if it is enabled.
  *
- * Reverse the effect of magic_quotes_gpc if it is enabled.
  * Please disable magic_quotes_gpc so we don't have to do this.
  * See http://php.net/manual/en/security.magicquotes.disabling.php
  *
  */
-
 function startup() {
 	error_reporting(E_ERROR | E_WARNING | E_PARSE);
 
@@ -709,20 +708,18 @@ function startup() {
  * which is now static (although currently constructed at startup). We are only converting
  * 'system' config settings.
  */
-
 class miniApp {
 	public $config = array('system' => array());
 
 	public function convert() {
 		if($this->config['system']) {
-		    foreach($this->config['system'] as $k => $v)
-		        App::$config['system'][$k] = $v;
+			foreach($this->config['system'] as $k => $v)
+				App::$config['system'][$k] = $v;
 		}
 	}
 }
 
 
-
 /**
  * class: App
  *
@@ -886,11 +883,11 @@ class App {
 
 			if(x($_SERVER,'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443)
 				self::$hostname .= ':' . $_SERVER['SERVER_PORT'];
-			/**
+
+			/*
 			 * Figure out if we are running at the top of a domain
 			 * or in a sub-directory and adjust accordingly
 			 */
-
 			$path = trim(dirname($_SERVER['SCRIPT_NAME']),'/\\');
 			if(isset($path) && strlen($path) && ($path != self::$path))
 				self::$path = $path;
@@ -922,7 +919,7 @@ class App {
 		 *
 		 * There will always be one argument. If provided a naked domain
 		 * URL, self::$argv[0] is set to "home".
-		 * 
+		 *
 		 * If $argv[0] has a period in it, for example foo.json; rewrite
 		 * to module = 'foo' and set $_REQUEST['module_format'] = 'json';
 		 */
@@ -1147,7 +1144,12 @@ class App {
 		head_add_link(['rel' => 'shortcut icon', 'href' => head_get_icon()]);
 
 		$x = [ 'header' => '' ];
-		call_hooks('build_pagehead',$x);
+		/**
+		 * @hooks build_pagehead
+		 *   Called when creating the HTML page header.
+		 *   * \e string \b header - Return the HTML header which should be added
+		 */
+		call_hooks('build_pagehead', $x);
 
 		/* put the head template at the beginning of page['htmlhead']
 		 * since the code added by the modules frequently depends on it
@@ -1178,8 +1180,10 @@ class App {
 	}
 
 	/**
-	* register template engine class
-	* if $name is "", is used class static property $class::$name
+	* @brief Register template engine class.
+	*
+	* If $name is "", is used class static property $class::$name.
+	*
 	* @param string $class
 	* @param string $name
 	*/
@@ -1198,8 +1202,9 @@ class App {
 	}
 
 	/**
-	* return template engine instance. If $name is not defined,
-	* return engine defined by theme, or default
+	* @brief Return template engine instance.
+	*
+	* If $name is not defined, return engine defined by theme, or default.
 	*
 	* @param string $name Template engine name
 	*
@@ -1302,8 +1307,11 @@ function x($s, $k = null) {
 }
 
 
-// called from db initialisation if db is dead.
-
+/**
+ * @brief Called from db initialisation if db is dead.
+ *
+ * @ref include/system_unavailable.php will handle everything further.
+ */
 function system_unavailable() {
 	include('include/system_unavailable.php');
 	system_down();
@@ -1359,7 +1367,12 @@ function os_mkdir($path, $mode = 0777, $recursive = false) {
 }
 
 
-// recursively delete a directory
+/**
+ * @brief Recursively delete a directory.
+ *
+ * @param string $path
+ * @return boolean
+ */
 function rrmdir($path) {
 	if(is_dir($path) === true) {
 		$files = array_diff(scandir($path), array('.', '..'));
@@ -1386,10 +1399,11 @@ function is_ajax() {
 }
 
 
-// Primarily involved with database upgrade, but also sets the
-// base url for use in cmdline programs which don't have
-// $_SERVER variables, and synchronising the state of installed plugins.
-
+/**
+ * Primarily involved with database upgrade, but also sets the
+ * base url for use in cmdline programs which don't have
+ * $_SERVER variables, and synchronising the state of installed plugins.
+ */
 function check_config() {
 
 	$saved = get_config('system','urlverify');
@@ -1600,15 +1614,23 @@ function fix_system_urls($oldurl, $newurl) {
 			);
 		}
 	}
-
 }
 
 
-// wrapper for adding a login box. If $register == true provide a registration
-// link. This will most always depend on the value of App::$config['system']['register_policy'].
-// returns the complete html for inserting into the page
-
-function login($register = false, $form_id = 'main-login', $hiddens=false, $login_page = true) {
+/**
+ * @brief Wrapper for adding a login box.
+ *
+ * If $register == true provide a registration link. This will most always depend
+ * on the value of App::$config['system']['register_policy'].
+ * Returns the complete html for inserting into the page
+ *
+ * @param boolean $register (optional) default false
+ * @param string $form_id (optional) default \e main-login
+ * @param boolean $hiddens (optional) default false
+ * @param boolean $login_page (optional) default true
+ * @return string Parsed HTML code.
+ */
+function login($register = false, $form_id = 'main-login', $hiddens = false, $login_page = true) {
 	$o = '';
 	$reg = false;
 	$reglink = get_config('system', 'register_link');
@@ -1648,6 +1670,11 @@ function login($register = false, $form_id = 'main-login', $hiddens=false, $logi
 		'$lostlink'     => t('Password Reset'),
 	));
 
+	/**
+	 * @hooks login_hook
+	 *   Called when generating the login form.
+	 *   * \e string with parsed HTML
+	 */
 	call_hooks('login_hook', $o);
 
 	return $o;
@@ -1736,9 +1763,13 @@ function remote_channel() {
 }
 
 /**
+ * @brief Show an error or alert text on next page load.
+ *
  * Contents of $s are displayed prominently on the page the next time
  * a page is loaded. Usually used for errors or alerts.
  *
+ * For informational text use info().
+ *
  * @param string $s Text to display
  */
 function notice($s) {
@@ -1751,18 +1782,20 @@ function notice($s) {
 	// - typically seen as multiple 'permission denied' messages
 	// as a result of auto-reloading a protected page with &JS=1
 
-	if(in_array($s,$_SESSION['sysmsg']))
+	if(in_array($s, $_SESSION['sysmsg']))
 		return;
 
 	if(App::$interactive) {
 		$_SESSION['sysmsg'][] = $s;
 	}
-
 }
 
 /**
+ * @brief Show an information text on next page load.
+ *
  * Contents of $s are displayed prominently on the page the next time a page is
  * loaded. Usually used for information.
+ *
  * For error and alerts use notice().
  *
  * @param string $s Text to display
@@ -1777,7 +1810,7 @@ function info($s) {
 }
 
 /**
- * @brief Wrapper around config to limit the text length of an incoming message
+ * @brief Wrapper around config to limit the text length of an incoming message.
  *
  * @return int
  */
@@ -1787,15 +1820,15 @@ function get_max_import_size() {
 
 
 /**
- *
- * Wrap calls to proc_close(proc_open()) and call hook
+ * @brief Wrap calls to proc_close(proc_open()) and call hook
  * so plugins can take part in process :)
  *
  * args:
  * $cmd program to run
  *  next args are passed as $cmd command line
  *
- * e.g.: proc_run("ls","-la","/tmp");
+ * e.g.:
+ * @code{.php}proc_run("ls", "-la", "/tmp");@endcode
  *
  * $cmd and string args are surrounded with ""
  */
@@ -1810,8 +1843,16 @@ function proc_run(){
 
 	$args = flatten_array_recursive($args);
 
-	$arr = array('args' => $args, 'run_cmd' => true);
-
+	$arr =  [
+			'args' => $args,
+			'run_cmd' => true
+	];
+	/**
+	 * @hooks proc_run
+	 *   Called when invoking PHP sub processes.
+	 *   * \e array \b args
+	 *   * \e boolean \b run_cmd
+	 */
 	call_hooks('proc_run', $arr);
 
 	if(! $arr['run_cmd'])
@@ -1873,7 +1914,6 @@ function is_windows() {
  *
  * @return bool true if user is an admin
  */
-
 function is_site_admin() {
 
 	if(! session_id())
@@ -1943,7 +1983,6 @@ function load_contact_links($uid) {
  *
  * @return string
  */
-
 function build_querystring($params, $name = null) {
 	$ret = '';
 	foreach($params as $key => $val) {
@@ -1962,12 +2001,14 @@ function build_querystring($params, $name = null) {
 			}
 		}
 	}
+
 	return $ret;
 }
 
 
-// much better way of dealing with c-style args
-
+/*
+ * @brief Much better way of dealing with c-style args.
+ */
 function argc() {
 	return App::$argc;
 }
@@ -1986,9 +2027,8 @@ function dba_timer() {
 /**
  * @brief Returns xchan_hash from the observer.
  *
- * @return empty string if no observer, otherwise xchan_hash from observer
+ * @return string xchan_hash from observer, otherwise empty string if no observer
  */
-
 function get_observer_hash() {
 	$observer = App::get_observer();
 	if(is_array($observer))
@@ -1999,19 +2039,24 @@ function get_observer_hash() {
 
 
 /**
- * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
+ * @brief Returns the complete URL of the current page, e.g.: http(s)://something.com/network
  *
  * Taken from http://webcheatsheet.com/php/get_current_page_url.php
+ *
+ * @return string
  */
 function curPageURL() {
 	$pageURL = 'http';
-	if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
+	if ($_SERVER["HTTPS"] == "on") {
+		$pageURL .= "s";
+	}
 	$pageURL .= "://";
 	if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
 		$pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
 	} else {
 		$pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
 	}
+
 	return $pageURL;
 }
 
@@ -2022,7 +2067,6 @@ function curPageURL() {
  *
  * @todo not fully implemented yet
  *
- * @param App $a global application object
  * @param string $navname
  *
  * @return mixed
@@ -2046,8 +2090,17 @@ function load_pdl() {
 
 	if (! count(App::$layout)) {
 
-		$arr = array('module' => App::$module, 'layout' => '');
-		call_hooks('load_pdl',$arr);
+		$arr = [
+				'module' => App::$module,
+				'layout' => ''
+		];
+		/**
+		 * @hooks load_pdl
+		 *   Called when we load a PDL file or description.
+		 *   * \e string \b module
+		 *   * \e string \b layout
+		 */
+		call_hooks('load_pdl', $arr);
 		$layout = $arr['layout'];
 
 		$n = 'mod_' . App::$module . '.pdl' ;
@@ -2096,7 +2149,7 @@ function construct_page() {
 	if($uid) {
 		$navbar = get_pconfig($uid,'system','navbar',$navbar);
 	}
-	
+
 	if($comanche && App::$layout['navbar']) {
 		$navbar = App::$layout['navbar'];
 	}
@@ -2150,7 +2203,17 @@ function construct_page() {
 	// layout completely with a new layout definition, or replace/remove existing content.
 
 	if($comanche) {
-		$arr = array('module' => App::$module, 'layout' => App::$layout);
+		$arr = [
+				'module' => App::$module,
+				'layout' => App::$layout
+		];
+		/**
+		 * @hooks construct_page
+		 *   General purpose hook to provide content to certain page regions.
+		 *   Called when constructing the Comanche page.
+		 *   * \e string \b module
+		 *   * \e string \b layout
+		 */
 		call_hooks('construct_page', $arr);
 		App::$layout = $arr['layout'];
 
@@ -2294,10 +2357,13 @@ function get_directory_primary() {
 
 
 /**
- * @brief return relative date of last completed poller execution.
+ * @brief Return relative date of last completed poller execution.
+ *
+ * @return string relative date of last completed poller execution
  */
 function get_poller_runtime() {
 	$t = get_config('system', 'lastpoll');
+
 	return relative_date($t);
 }
 
@@ -2307,6 +2373,7 @@ function z_get_upload_dir() {
 		$upload_dir = ini_get('upload_tmp_dir');
 	if(! $upload_dir)
 		$upload_dir = sys_get_temp_dir();
+
 	return $upload_dir;
 }
 
@@ -2314,16 +2381,22 @@ function z_get_temp_dir() {
 	$temp_dir = get_config('system','tempdir');
 	if(! $temp_dir)
 		$temp_dir = sys_get_temp_dir();
+
 	return $upload_dir;
 }
 
-function z_check_cert() {
 
-	if(strpos(z_root(),'https://') !== false) {
+/**
+ * @brief Check if server certificate is valid.
+ *
+ * Notify admin if not.
+ */
+function z_check_cert() {
+	if(strpos(z_root(), 'https://') !== false) {
 		$x = z_fetch_url(z_root() . '/siteinfo.json');
 		if(! $x['success']) {
 			$recurse = 0;
-			$y = z_fetch_url(z_root() . '/siteinfo.json',false,$recurse,array('novalidate' => true));
+			$y = z_fetch_url(z_root() . '/siteinfo.json', false, $recurse, ['novalidate' => true]);
 			if($y['success'])
 				cert_bad_email();
 		}
@@ -2336,7 +2409,6 @@ function z_check_cert() {
  *
  * If a hub is available over https it must have a publicly valid certificate.
  */
-
 function cert_bad_email() {
 	return z_mail(
 		[
@@ -2345,7 +2417,7 @@ function cert_bad_email() {
 			'textVersion'    => replace_macros(get_intltext_template('cert_bad_eml.tpl'),
 				[
 					'$sitename' => App::$config['system']['sitename'],
-					'$siteurl'  =>  z_root(),
+					'$siteurl'  => z_root(),
 					'$error'    => t('Website SSL certificate is not valid. Please correct.')
 				]
 			)
@@ -2407,7 +2479,6 @@ function check_for_new_perms() {
 									\Zotlabs\Access\PermissionLimits::Set($cc['channel_id'],$p,0);
 								}
 
-
 								$set = ((array_key_exists('perms_connect',$rp) && in_array($p,$rp['perms_connect'])) ? 1 : 0);
 								// foreach connection set to the perms_connect value
 								if($x) {
@@ -2426,11 +2497,9 @@ function check_for_new_perms() {
 	// We should probably call perms_refresh here, but this should get pushed in 24 hours and there is no urgency
 	if($found_new_perm)
 		set_config('system','perms',$pcurrent);
-
 }
 
 
-
 /**
  * @brief Send warnings every 3-5 days if cron is not running.
  */
@@ -2479,11 +2548,15 @@ function check_cron_broken() {
 }
 
 
-
+/**
+ * @brief
+ *
+ * @param boolean $allow_account (optional) default false
+ * @return boolean
+ */
 function observer_prohibited($allow_account = false) {
-
 	if($allow_account)
-		return (((get_config('system','block_public')) && (! get_account_id()) && (! remote_channel())) ? true : false );
-	return (((get_config('system','block_public')) && (! local_channel()) && (! remote_channel())) ? true : false );
+		return (((get_config('system', 'block_public')) && (! get_account_id()) && (! remote_channel())) ? true : false );
 
+	return (((get_config('system', 'block_public')) && (! local_channel()) && (! remote_channel())) ? true : false );
 }
diff --git a/include/acl_selectors.php b/include/acl_selectors.php
index 09c24f82c..4e203074b 100644
--- a/include/acl_selectors.php
+++ b/include/acl_selectors.php
@@ -110,7 +110,7 @@ function fixacl(&$item) {
 *
 * @param array   $defaults Optional access control list for the initial state of the dialog.
 * @param boolean $show_jotnets Whether plugins for federated networks should be included in the permissions dialog
-* @param PermissionDescription $emptyACL_description - An optional description for the permission implied by selecting an empty ACL. Preferably an instance of PermissionDescription.
+* @param \Zotlabs\Lib\PermissionDescription $emptyACL_description - An optional description for the permission implied by selecting an empty ACL. Preferably an instance of PermissionDescription.
 * @param string  $dialog_description Optional message to include at the top of the dialog. E.g. "Warning: Post permissions cannot be changed once sent".
 * @param string  $context_help Allows the dialog to present a help icon. E.g. "acl_dialog_post"
 * @param boolean $readonly Not implemented yet. When implemented, the dialog will use acl_readonly.tpl instead, so that permissions may be viewed for posts that can no longer have their permissions changed.
@@ -172,7 +172,7 @@ function populate_acl($defaults = null,$show_jotnets = true, $emptyACL_descripti
 	if(count($allow_cid) === 1 && $channel && $allow_cid[0] = $channel['channel_hash'] && (! $allow_gid) && (! $deny_gid) && (! $deny_cid)) {
 		$just_me = true;
 		$custom = false;
-	}	
+	}
 
 	$r = q("SELECT id, profile_guid, profile_name from profile where is_default = 0 and uid = %d order by profile_name",
 		intval(local_channel())
diff --git a/include/attach.php b/include/attach.php
index 78e133b03..bfe3d5d46 100644
--- a/include/attach.php
+++ b/include/attach.php
@@ -21,7 +21,7 @@ require_once('include/group.php');
  * This function takes a file name and guess the mimetype from the
  * filename extension.
  *
- * @param $filename a string filename
+ * @param string $filename a string filename
  * @return string The mimetype according to a file ending.
  */
 function z_mime_content_type($filename) {
@@ -412,6 +412,10 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 
 	require_once('include/photos.php');
 
+	/**
+	 * @hooks photo_upload_begin
+	 *   Called when attempting to upload a photo.
+	 */
 	call_hooks('photo_upload_begin', $arr);
 
 	$ret = array('success' => false);
@@ -486,14 +490,36 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 			$x = attach_mkdir($channel,$observer_hash,$arr);
 			if($x['message'])
 				logger('import_directory: ' . $x['message']);
+
 			return;
 		}
 	}
 	elseif($options !== 'update') {
-		$f = array('src' => '', 'filename' => '', 'filesize' => 0, 'type' => '');
-
-		call_hooks('photo_upload_file',$f);
-		call_hooks('attach_upload_file',$f);
+		$f = [
+				'src' => '',
+				'filename' => '',
+				'filesize' => 0,
+				'type' => ''
+		];
+
+		/**
+		 * @hooks photo_upload_file
+		 *   Called to generate alternate filenames for an upload.
+		 *   * \e string \b src - return value, default empty
+		 *   * \e string \b filename - return value, default empty
+		 *   * \e number \b filesize - return value, default 0
+		 *   * \e string \b type - return value, default empty
+		 */
+		call_hooks('photo_upload_file', $f);
+		/**
+		 * @hooks attach_upload_file
+		 *   Called when uploading a file.
+		 *   * \e string \b src - return value, default empty
+		 *   * \e string \b filename - return value, default empty
+		 *   * \e number \b filesize - return value, default 0
+		 *   * \e string \b type - return value, default empty
+		 */
+		call_hooks('attach_upload_file', $f);
 
 		if (x($f,'src') && x($f,'filesize')) {
 			$src      = $f['src'];
@@ -680,7 +706,13 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 			$ret['message'] = sprintf( t('File exceeds size limit of %d'), $maxfilesize);
 			if($remove_when_processed)
 				@unlink($src);
-			call_hooks('photo_upload_end',$ret);
+
+			/**
+			 * @hooks photo_upload_end
+			 *   Called when a photo upload has been processed.
+			 */
+			call_hooks('photo_upload_end', $ret);
+
 			return $ret;
 		}
 
@@ -695,7 +727,12 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 				if($remove_when_processed)
 					@unlink($src);
 
-				call_hooks('photo_upload_end',$ret);
+				/**
+				 * @hooks photo_upload_end
+				 *   Called when a photo upload has been processed.
+				 */
+				call_hooks('photo_upload_end', $ret);
+
 				return $ret;
 			}
 		}
@@ -773,7 +810,7 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 		);
 	}
 	elseif($options === 'update') {
-		$r = q("update attach set filename = '%s', filetype = '%s', folder = '%s', edited = '%s', os_storage = %d, is_photo = %d, os_path = '%s', 
+		$r = q("update attach set filename = '%s', filetype = '%s', folder = '%s', edited = '%s', os_storage = %d, is_photo = %d, os_path = '%s',
 			display_path = '%s', allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid  = '%s' where id = %d and uid = %d",
 			dbesc((array_key_exists('filename',$arr))  ? $arr['filename']  : $x[0]['filename']),
 			dbesc((array_key_exists('filetype',$arr))  ? $arr['filetype']  : $x[0]['filetype']),
@@ -862,7 +899,13 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 
 	if(! $r) {
 		$ret['message'] = t('File upload failed. Possible system limit or action terminated.');
-		call_hooks('photo_upload_end',$ret);
+
+		/**
+		 * @hooks photo_upload_end
+		 *   Called when a photo upload has been processed.
+		 */
+		call_hooks('photo_upload_end', $ret);
+
 		return $ret;
 	}
 
@@ -875,15 +918,25 @@ function attach_store($channel, $observer_hash, $options = '', $arr = null) {
 
 	if(! $r) {
 		$ret['message'] = t('Stored file could not be verified. Upload failed.');
-		call_hooks('photo_upload_end',$ret);
+
+		/**
+		 * @hooks photo_upload_end
+		 *   Called when a photo upload has been processed.
+		 */
+		call_hooks('photo_upload_end', $ret);
+
 		return $ret;
 	}
 
 	$ret['success'] = true;
 	$ret['data'] = $r[0];
 	if(! $is_photo) {
-		// This would've been called already with a success result in photos_upload() if it was a photo.
-		call_hooks('photo_upload_end',$ret);
+		/**
+		 * @hooks photo_upload_end
+		 *   Called when a photo upload has been processed.
+		 *   This would've been called already with a success result in photos_upload() if it was a photo.
+		 */
+		call_hooks('photo_upload_end', $ret);
 	}
 
 	if($dosync) {
@@ -986,7 +1039,7 @@ function attach_mkdir($channel, $observer_hash, $arr = null) {
 
 	$os_basepath = 'store/' . $channel['channel_address'];
 
-	logger('attach_mkdir: basepath: ' . $os_basepath);
+	logger('basepath: ' . $os_basepath);
 
 	if(! is_dir($os_basepath))
 		os_mkdir($os_basepath,STORAGE_DEFAULT_PERMISSIONS, true);
@@ -1055,7 +1108,7 @@ function attach_mkdir($channel, $observer_hash, $arr = null) {
 				return $ret;
 			}
 
-			$dpath = $r[0]['filename'] . (($dpath) ? '/' . $dpath : ''); 
+			$dpath = $r[0]['filename'] . (($dpath) ? '/' . $dpath : '');
 
 			if($lfile)
 				$lpath = $r[0]['hash'] . (($lpath) ? '/' . $lpath : '');
@@ -1154,7 +1207,7 @@ function attach_mkdirp($channel, $observer_hash, $arr = null) {
 
 	$basepath = 'store/' . $channel['channel_address'];
 
-	logger('attach_mkdirp: basepath: ' . $basepath);
+	logger('basepath: ' . $basepath);
 
 	if(! is_dir($basepath))
 		os_mkdir($basepath,STORAGE_DEFAULT_PERMISSIONS, true);
@@ -1180,6 +1233,7 @@ function attach_mkdirp($channel, $observer_hash, $arr = null) {
 	foreach($paths as $p) {
 		if(! $p)
 			continue;
+
 		$arx = array(
 			'filename' => $p,
 			'folder' => $current_parent,
@@ -1308,7 +1362,7 @@ function attach_delete($channel_id, $resource, $is_photo = 0) {
 	);
 
 	if(! $r) {
-		attach_drop_photo($channel_id,$resource);		
+		attach_drop_photo($channel_id,$resource);
 		return;
 	}
 
@@ -1501,6 +1555,13 @@ function find_folder_hash_by_attach_hash($channel_id, $attachHash, $recurse = fa
 	return $hash;
 }
 
+/**
+ * @brief Return the hash of an attachment's folder.
+ *
+ * @param int $channel_id
+ * @param string $path
+ * @return string
+ */
 function find_folder_hash_by_path($channel_id, $path) {
 
 	if(! $path)
@@ -1530,7 +1591,6 @@ function find_folder_hash_by_path($channel_id, $path) {
 		return '';
 
 	return $parent_hash;
-
 }
 
 /**
@@ -1557,9 +1617,11 @@ function find_filename_by_hash($channel_id, $attachHash) {
 }
 
 /**
+ * @brief Pipes $in to $out in 16MB chunks.
  *
- * @param $in
- * @param $out
+ * @param resource $in File pointer of input
+ * @param resource $out File pointer of output
+ * @return number with the size
  */
 function pipe_streams($in, $out) {
 	$size = 0;
@@ -1726,11 +1788,12 @@ function file_activity($channel_id, $object, $allow_cid, $allow_gid, $deny_cid,
 }
 
 /**
- * @brief Create file activity object
+ * @brief Create file activity object.
  *
  * @param int $channel_id
  * @param string $hash
- * @param string $cloudpath
+ * @param string $url
+ * @return array An associative array for the specified file.
  */
 function get_file_activity_object($channel_id, $hash, $url) {
 
@@ -2257,7 +2320,7 @@ function attach_move($channel_id, $resource_id, $new_folder_hash) {
 
 
 	if($r[0]['is_photo']) {
-		$t = q("update photo set album = '%s', filename = '%s', os_path = '%s', display_path = '%s' 
+		$t = q("update photo set album = '%s', filename = '%s', os_path = '%s', display_path = '%s'
 			where resource_id = '%s' and uid = %d",
 			dbesc($newdirname),
 			dbesc($filename),
@@ -2349,8 +2412,6 @@ function attach_syspaths($channel_id,$attach_hash) {
 	while($attach_hash);
 
 	return [ 'os_path' => $os_path, 'path' => $path ];
-
-
 }
 
 
@@ -2386,7 +2447,7 @@ function save_chunk($channel,$start,$end,$len) {
 	$tmp_path = $_FILES['files']['tmp_name'];
 	$new_base = 'store/[data]/' . $channel['channel_address'] . '/tmp';
 	os_mkdir($new_base,STORAGE_DEFAULT_PERMISSIONS,true);
-	
+
 	$new_path = $new_base . '/' . $_FILES['files']['name'];
 
 	if(! file_exists($new_path)) {
@@ -2417,20 +2478,19 @@ function save_chunk($channel,$start,$end,$len) {
 }
 
 
-/*
- * chunkloader
- * Submit handler for chunked uploads
- * 
+/**
+ * @brief Submit handler for chunked uploads.
+ *
+ * @param array $channel
+ * @param array $arr
+ * @return array
  */
-
-function chunkloader($channel,$arr) {
+function chunkloader($channel, $arr) {
 
 	logger('request: ' . print_r($arr,true), LOGGER_DEBUG);
 	logger('files: ' . print_r($_FILES,true), LOGGER_DEBUG);
-	
 
 	$result = [];
-		
 
 	$tmp_path = $_FILES['file']['tmp_name'];
 	$new_base = 'store/[data]/' . $channel['channel_address'] . '/tmp';
@@ -2439,7 +2499,7 @@ function chunkloader($channel,$arr) {
 	$new_path = $new_base . '/' . $arr['resumableFilename'];
 
 	rename($tmp_path,$new_path . '.' . intval($arr['resumableChunkNumber']));
-	
+
 	$missing_parts = false;
 	for($x = 1; $x <= intval($arr['resumableTotalChunks']); $x ++) {
 		if(! file_exists($new_path . '.' . $x)) {
@@ -2475,7 +2535,7 @@ function chunkloader($channel,$arr) {
 	$result['error'] = 0;
 	$result['size'] = $arr['resumableTotalSize'];
 	$result['complete'] = true;
-	return $result;
 
+	return $result;
 }
 
diff --git a/include/channel.php b/include/channel.php
index 399dff87e..6a6022aba 100644
--- a/include/channel.php
+++ b/include/channel.php
@@ -1,6 +1,7 @@
 <?php
 /**
  * @file include/channel.php
+ * @brief Channel related functions.
  */
 
 require_once('include/zot.php');
@@ -58,10 +59,8 @@ function identity_check_service_class($account_id) {
  * Plugins can set additional policies such as full name requirements, character
  * sets, multi-byte length, etc.
  *
- * @hooks validate_channelname
- *   * \e array \b name
  * @param string $name
- * @returns nil return if name is valid, or string describing the error state.
+ * @return string describing the error state, or nil return if name is valid
  */
 function validate_channelname($name) {
 
@@ -72,6 +71,12 @@ function validate_channelname($name) {
 		return t('Name too long');
 
 	$arr = ['name' => $name];
+	/**
+	 * @hooks validate_channelname
+	 *   Used to validate the names used by a channel.
+	 *   * \e string \b name
+	 *   * \e string \b message - return error message
+	 */
 	call_hooks('validate_channelname', $arr);
 
 	if (x($arr, 'message'))
@@ -259,7 +264,6 @@ function create_identity($arr) {
 			'channel_system'      => intval($system),
 			'channel_expire_days' => intval($expire),
 			'channel_timezone'    => App::$timezone
-
 		]
 	);
 
@@ -280,9 +284,19 @@ function create_identity($arr) {
 
 	$photo_type = null;
 
-	$z = [ 'account' => $a[0], 'channel' => $r[0], 'photo_url' => '' ];
-	call_hooks('create_channel_photo',$z);
- 
+	$z = [
+			'account' => $a[0],
+			'channel' => $r[0],
+			'photo_url' => ''
+	];
+	/**
+	 * @hooks create_channel_photo
+	 *   * \e array \b account
+	 *   * \e array \b channel
+	 *   * \e string \b photo_url - Return value
+	 */
+	call_hooks('create_channel_photo', $z);
+
 	if($z['photo_url']) {
 		$photo_type = import_channel_photo_from_url($z['photo_url'],$arr['account_id'],$r[0]['channel_id']);
 	}
@@ -322,7 +336,7 @@ function create_identity($arr) {
 		]
 	);
 	if(! $r)
-		logger('create_identity: Unable to store hub location');
+		logger('Unable to store hub location');
 
 	$newuid = $ret['channel']['channel_id'];
 
@@ -454,12 +468,18 @@ function create_identity($arr) {
 			require_once('include/follow.php');
 			if(! is_array($accts))
 				$accts = array($accts);
+
 			foreach($accts as $acct) {
 				if(trim($acct))
 					new_contact($newuid,trim($acct),$ret['channel'],false);
 			}
 		}
 
+		/**
+		 * @hooks create_identity
+		 *   Called when creating a channel.
+		 *   * \e int - The UID of the created identity
+		 */
 		call_hooks('create_identity', $newuid);
 
 		Zotlabs\Daemon\Master::Summon(array('Directory', $ret['channel']['channel_id']));
@@ -576,14 +596,14 @@ function channel_change_address($channel,$new_address) {
 	$old_address = $channel['channel_address'];
 
 	if($new_address === 'sys') {
-        $ret['message'] = t('Reserved nickname. Please choose another.');
-        return $ret;
-    }
+		$ret['message'] = t('Reserved nickname. Please choose another.');
+		return $ret;
+	}
 
-    if(check_webbie(array($new_address)) !== $new_address) {
-        $ret['message'] = t('Nickname has unsupported characters or is already being used on this site.');
-        return $ret;
-    }
+	if(check_webbie(array($new_address)) !== $new_address) {
+		$ret['message'] = t('Nickname has unsupported characters or is already being used on this site.');
+		return $ret;
+	}
 
 	$r = q("update channel set channel_address = '%s' where channel_id = %d",
 		dbesc($new_address),
@@ -644,7 +664,7 @@ function channel_change_address($channel,$new_address) {
 				);
 			}
 		}
-	}		
+	}
 
 	Zotlabs\Daemon\Master::Summon(array('Notifier', 'refresh_all', $channel['channel_id']));
 
@@ -653,10 +673,6 @@ function channel_change_address($channel,$new_address) {
 }
 
 
-
-
-
-
 /**
  * @brief Set default channel to be used on login.
  *
@@ -664,9 +680,9 @@ function channel_change_address($channel,$new_address) {
  *       login account
  * @param int $channel_id
  *       channel id to set as default for this account
- * @param boolean $force
- *       if true, set this default unconditionally
- *       if $force is false only do this if there is no existing default
+ * @param boolean $force (optional) default true
+ *       - if true, set this default unconditionally
+ *       - if $force is false only do this if there is no existing default
  */
 function set_default_login_identity($account_id, $channel_id, $force = true) {
 	$r = q("select account_default_channel from account where account_id = %d limit 1",
@@ -685,8 +701,6 @@ function set_default_login_identity($account_id, $channel_id, $force = true) {
 /**
  * @brief Return an array with default list of sections to export.
  *
- * @hooks get_default_export_sections
- *   * \e array \b sections
  * @return array with default section names to export
  */
 function get_default_export_sections() {
@@ -703,6 +717,11 @@ function get_default_export_sections() {
 	];
 
 	$cb = [ 'sections' => $sections ];
+	/**
+	 * @hooks get_default_export_sections
+	 *   Called to get the default list of functional data groups to export in identity_basic_export().
+	 *   * \e array \b sections - return value
+	 */
 	call_hooks('get_default_export_sections', $cb);
 
 	return $cb['sections'];
@@ -714,15 +733,11 @@ function get_default_export_sections() {
  * which would be necessary to create a nomadic identity clone. This includes
  * most channel resources and connection information with the exception of content.
  *
- * @hooks identity_basic_export
- *   * \e int \b channel_id
- *   * \e array \b sections
- *   * \e array \b data
  * @param int $channel_id
  *     Channel_id to export
  * @param array $sections (optional)
  *     Which sections to include in the export, default see get_default_export_sections()
- * @returns array
+ * @return array
  *     See function for details
  */
 function identity_basic_export($channel_id, $sections = null) {
@@ -967,7 +982,7 @@ function identity_basic_export($channel_id, $sections = null) {
 		}
 	}
 
-	if(in_array('items',$sections)) {
+	if(in_array('items', $sections)) {
 		/** @warning this may run into memory limits on smaller systems */
 
 		/** export three months of posts. If you want to export and import all posts you have to start with
@@ -991,22 +1006,42 @@ function identity_basic_export($channel_id, $sections = null) {
 		}
 	}
 
-	$addon = [ 'channel_id' => $channel_id, 'sections' => $sections, 'data' => $ret];
-	call_hooks('identity_basic_export',$addon);
+	$addon = [
+			'channel_id' => $channel_id,
+			'sections' => $sections,
+			'data' => $ret
+	];
+	/**
+	 * @hooks identity_basic_export
+	 *   Called when exporting a channel's basic information for backup or transfer.
+	 *   * \e number \b channel_id - The channel ID
+	 *   * \e array \b sections
+	 *   * \e array \b data - The data will get returned
+	 */
+	call_hooks('identity_basic_export', $addon);
 	$ret = $addon['data'];
 
 	return $ret;
 }
 
-
-function identity_export_year($channel_id,$year,$month = 0) {
+/**
+ * @brief Export items for a year, or a month of a year.
+ *
+ * @param int $channel_id The channel ID
+ * @param number $year YYYY
+ * @param number $month (optional) 0-12, default 0 complete year
+ * @return array An associative array
+ *   * \e array \b relocate - (optional)
+ *   * \e array \b item - array with items encoded_item()
+ */
+function identity_export_year($channel_id, $year, $month = 0) {
 
 	if(! $year)
 		return array();
 
 	if($month && $month <= 12) {
-		$target_month = sprintf('%02d',$month);
-		$target_month_plus = sprintf('%02d',$month+1);
+		$target_month = sprintf('%02d', $month);
+		$target_month_plus = sprintf('%02d', $month+1);
 	}
 	else
 		$target_month = '01';
@@ -1017,13 +1052,13 @@ function identity_export_year($channel_id,$year,$month = 0) {
 	if($ch) {
 		$ret['relocate'] = [ 'channel_address' => $ch['channel_address'], 'url' => z_root()];
 	}
-	$mindate = datetime_convert('UTC','UTC',$year . '-' . $target_month . '-01 00:00:00');
+	$mindate = datetime_convert('UTC', 'UTC', $year . '-' . $target_month . '-01 00:00:00');
 	if($month && $month < 12)
-		$maxdate = datetime_convert('UTC','UTC',$year . '-' . $target_month_plus . '-01 00:00:00');
+		$maxdate = datetime_convert('UTC', 'UTC', $year . '-' . $target_month_plus . '-01 00:00:00');
 	else
-		$maxdate = datetime_convert('UTC','UTC',$year+1 . '-01-01 00:00:00');
+		$maxdate = datetime_convert('UTC', 'UTC', $year+1 . '-01-01 00:00:00');
 
-	$r = q("select * from item where ( item_wall = 1 or item_type != %d ) and item_deleted = 0 and uid = %d and created >= '%s' and created < '%s'  and resource_type = '' order by created",
+	$r = q("select * from item where ( item_wall = 1 or item_type != %d ) and item_deleted = 0 and uid = %d and created >= '%s' and created < '%s' and resource_type = '' order by created",
 		intval(ITEM_TYPE_POST),
 		intval($channel_id),
 		dbesc($mindate),
@@ -1033,9 +1068,9 @@ function identity_export_year($channel_id,$year,$month = 0) {
 	if($r) {
 		$ret['item'] = array();
 		xchan_query($r);
-		$r = fetch_post_tags($r,true);
+		$r = fetch_post_tags($r, true);
 		foreach($r as $rr)
-			$ret['item'][] = encode_item($rr,true);
+			$ret['item'][] = encode_item($rr, true);
 	}
 
 	return $ret;
@@ -1274,6 +1309,7 @@ function profile_edit_menu($uid) {
 			foreach($r as $rr) {
 				if(!($multi_profiles || $rr['is_default']))
 					 continue;
+
 				$ret['menu']['entries'][] = array(
 					'photo'                => $rr['thumb'],
 					'id'                   => $rr['id'],
@@ -1298,8 +1334,8 @@ function profile_edit_menu($uid) {
  *
  * @param array $profile
  * @param int $block
- * @param boolean $show_connect
- * @param mixed $zcard
+ * @param boolean $show_connect (optional) default true
+ * @param mixed $zcard (optional) default false
  *
  * @return HTML string suitable for sidebar inclusion
  * Exceptions: Returns empty string if passed $profile is wrong type or not populated
@@ -1327,6 +1363,10 @@ function profile_sidebar($profile, $block = 0, $show_connect = true, $zcard = fa
 
 	$profile['picdate'] = urlencode($profile['picdate']);
 
+	/**
+	 * @hooks profile_sidebar_enter
+	 *   Called before generating the 'channel sidebar' or mini-profile.
+	 */
 	call_hooks('profile_sidebar_enter', $profile);
 
 	if($show_connect) {
@@ -1409,22 +1449,30 @@ function profile_sidebar($profile, $block = 0, $show_connect = true, $zcard = fa
 		'$reddress'      => $reddress,
 		'$rating'        => '',
 		'$contact_block' => $contact_block,
-		'$editmenu'	 => profile_edit_menu($profile['uid'])
+		'$editmenu'      => profile_edit_menu($profile['uid'])
 	));
 
-	$arr = array('profile' => $profile, 'entry' => $o);
+	$arr = [
+			'profile' => $profile,
+			'entry' => $o
+	];
 
+	/**
+	 * @hooks profile_sidebar
+	 *   Called when generating the 'channel sidebar' or mini-profile.
+	 *   * \e array \b profile
+	 *   * \e string \b entry - The parsed HTML template
+	 */
 	call_hooks('profile_sidebar', $arr);
 
 	return $arr['entry'];
-
 }
 
 function gender_icon($gender) {
 
 //	logger('gender: ' . $gender);
 
-	// This can easily get throw off if the observer language is different 
+	// This can easily get throw off if the observer language is different
 	// than the channel owner language.
 
 	if(strpos(strtolower($gender),strtolower(t('Female'))) !== false)
@@ -1622,16 +1670,21 @@ function get_my_address() {
  * 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.
- *
- * @hooks zid_init
- *   * \e string \b zid - their zid
- *   * \e string \b url - the destination url
  */
 function zid_init() {
 	$tmp_str = get_my_address();
 	if(validate_email($tmp_str)) {
-		$arr = array('zid' => $tmp_str, 'url' => App::$cmd);
-		call_hooks('zid_init',$arr);
+		$arr = [
+				'zid' => $tmp_str,
+				'url' => App::$cmd
+		];
+		/**
+		* @hooks zid_init
+		*   * \e string \b zid - their zid
+		*   * \e string \b url - the destination url
+		*/
+		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)
@@ -1641,7 +1694,8 @@ function zid_init() {
 			}
 			if($r && remote_channel() && remote_channel() === $r[0]['hubloc_hash'])
 				return;
-			logger('zid_init: not authenticated. Invoking reverse magic-auth for ' . $tmp_str);
+
+			logger('Not authenticated. Invoking reverse magic-auth for ' . $tmp_str);
 			// try to avoid recursion - but send them home to do a proper magic auth
 			$query = App::$query_string;
 			$query = str_replace(array('?zid=','&zid='),array('?rzid=','&rzid='),$query);
@@ -1650,7 +1704,7 @@ function zid_init() {
 				goaway($r[0]['hubloc_url'] . '/magic' . '?f=&rev=1&owa=1&dest=' . z_root() . $dest);
 			}
 			else
-				logger('zid_init: no hubloc found.');
+				logger('No hubloc found.');
 		}
 	}
 }
@@ -1673,21 +1727,23 @@ function zat_init() {
 }
 
 
-
-
-// Used from within PCSS themes to set theme parameters. If there's a
-// puid request variable, that is the "page owner" and normally their theme
-// settings take precedence; unless a local user sets the "always_my_theme"
-// system pconfig, which means they don't want to see anybody else's theme
-// settings except their own while on this site.
-
+/**
+ * @brief Used from within PCSS themes to set theme parameters.
+ *
+ * If there's a puid request variable, that is the "page owner" and normally
+ * their theme settings take precedence; unless a local user sets the "always_my_theme"
+ * system pconfig, which means they don't want to see anybody else's theme
+ * settings except their own while on this site.
+ *
+ * @return int
+ */
 function get_theme_uid() {
 	$uid = (($_REQUEST['puid']) ? intval($_REQUEST['puid']) : 0);
 	if(local_channel()) {
 		if((get_pconfig(local_channel(),'system','always_my_theme')) || (! $uid))
 			return local_channel();
 	}
-	if(! $uid) {
+	if(! $uierd) {
 		$x = get_sys_channel();
 		if($x)
 			return $x['channel_id'];
@@ -1700,9 +1756,9 @@ function get_theme_uid() {
 * @brief Retrieves the path of the default_profile_photo for this system
 * with the specified size.
 *
-* @param int $size
-*  one of (300, 80, 48)
-* @returns string with path to profile photo
+* @param int $size (optional) default 300
+*   one of (300, 80, 48)
+* @return string with path to profile photo
 */
 function get_default_profile_photo($size = 300) {
 	$scheme = get_config('system','default_profile_photo');
@@ -1715,9 +1771,9 @@ function get_default_profile_photo($size = 300) {
 /**
  * @brief Test whether a given identity is NOT a member of the Hubzilla.
  *
- * @param string $s;
+ * @param string $s
  *    xchan_hash of the identity in question
- * @returns boolean true or false
+ * @return boolean true or false
  */
 function is_foreigner($s) {
 	return((strpbrk($s, '.:@')) ? true : false);
@@ -1726,14 +1782,21 @@ function is_foreigner($s) {
 /**
  * @brief Test whether a given identity is a member of the Hubzilla.
  *
- * @param string $s;
+ * @param string $s
  *    xchan_hash of the identity in question
- * @returns boolean true or false
+ * @return boolean true or false
  */
 function is_member($s) {
 	return((is_foreigner($s)) ? false : true);
 }
 
+/**
+ * @brief Get chatpresence status for nick.
+ *
+ * @param string $nick
+ * @return array An associative array with
+ *   * \e bool \b result
+ */
 function get_online_status($nick) {
 
 	$ret = array('result' => false);
@@ -1748,6 +1811,7 @@ function get_online_status($nick) {
 		$hide = get_pconfig($r[0]['channel_id'],'system','hide_online_status');
 		if($hide)
 			return $ret;
+
 		$x = q("select cp_status from chatpresence where cp_xchan = '%s' and cp_room = 0 limit 1",
 			dbesc($r[0]['channel_hash'])
 		);
@@ -1759,6 +1823,12 @@ function get_online_status($nick) {
 }
 
 
+/**
+ * @brief
+ *
+ * @param string $webbie
+ * @return array|boolean|string
+ */
 function remote_online_status($webbie) {
 
 	$result = false;
@@ -1782,11 +1852,10 @@ function remote_online_status($webbie) {
 
 
 /**
- * @brief
+ * @brief Return the parsed identity selector HTML template.
  *
- * @return string
+ * @return string with parsed HTML channel_id_selet template
  */
-
 function identity_selector() {
 	if(local_channel()) {
 		$r = q("select channel.*, xchan.* from channel left join xchan on channel.channel_hash = xchan.xchan_hash where channel.channel_account_id = %d and channel_removed = 0 order by channel_name ",
@@ -1798,6 +1867,7 @@ function identity_selector() {
 				'$channels' => $r,
 				'$selected' => local_channel()
 			));
+
 			return $o;
 		}
 	}
@@ -1809,14 +1879,17 @@ function identity_selector() {
 function is_public_profile() {
 	if(! local_channel())
 		return false;
+
 	if(intval(get_config('system','block_public')))
 		return false;
+
 	$channel = App::get_channel();
 	if($channel) {
 		$perm = \Zotlabs\Access\PermissionLimits::Get($channel['channel_id'],'view_profile');
 		if($perm == PERMS_PUBLIC)
 			return true;
 	}
+
 	return false;
 }
 
@@ -1861,7 +1934,7 @@ function get_profile_fields_advanced($filter = 0) {
  *
  * @param int $channel_id
  *    The channel to disable notifications for
- * @returns int
+ * @return int
  *    Current notification flag value. Send this to notifications_on() to restore the channel settings when finished
  *    with the activity requiring notifications_off();
  */
@@ -1993,13 +2066,14 @@ function get_cover_photo($channel_id,$format = 'bbcode', $res = PHOTO_RES_COVER_
 	return $output;
 }
 
+
 /**
- * @brief
+ * @brief Return parsed HTML zcard template.
  *
  * @param array $channel
- * @param string $observer_hash
- * @param array $args
- * @return string
+ * @param string $observer_hash (optional)
+ * @param array $args (optional)
+ * @return string parsed HTML from \e zcard template
  */
 function get_zcard($channel, $observer_hash = '', $args = array()) {
 
@@ -2067,6 +2141,14 @@ function get_zcard($channel, $observer_hash = '', $args = array()) {
 }
 
 
+/**
+ * @brief Return parsed HTML embed zcard template.
+ *
+ * @param array $channel
+ * @param string $observer_hash (optional)
+ * @param array $args (optional)
+ * @return string parsed HTML from \e zcard_embed template
+ */
 function get_zcard_embed($channel, $observer_hash = '', $args = array()) {
 
 	logger('get_zcard_embed');
@@ -2133,10 +2215,12 @@ function get_zcard_embed($channel, $observer_hash = '', $args = array()) {
 }
 
 /**
- * @brief
+ * @brief Get a channel array from a channel nickname.
  *
- * @param string $nick
- * @return mixed
+ * @param string $nick - A channel_address nickname
+ * @return array|boolean
+ *   - array with channel entry
+ *   - false if no channel with $nick was found
  */
 function channelx_by_nick($nick) {
 	$r = q("SELECT * FROM channel left join xchan on channel_hash = xchan_hash WHERE channel_address = '%s'  and channel_removed = 0 LIMIT 1",
@@ -2147,10 +2231,10 @@ function channelx_by_nick($nick) {
 }
 
 /**
- * @brief
+ * @brief Get a channel array by a channel_hash.
  *
  * @param string $hash
- * @return mixed
+ * @return array|boolean false if channel ID not found, otherwise the channel array
  */
 function channelx_by_hash($hash) {
 	$r = q("SELECT * FROM channel left join xchan on channel_hash = xchan_hash WHERE channel_hash = '%s' and channel_removed = 0 LIMIT 1",
@@ -2161,13 +2245,13 @@ function channelx_by_hash($hash) {
 }
 
 /**
- * @brief
+ * @brief Get a channel array by a channel ID.
  *
- * @param int $id
- * @return mixed
+ * @param int $id A channel ID
+ * @return array|boolean false if channel ID not found, otherwise the channel array
  */
 function channelx_by_n($id) {
-	$r = q("SELECT * FROM channel left join xchan on channel_hash = xchan_hash WHERE channel_id = %d and channel_removed = 0 LIMIT 1",
+	$r = q("SELECT * FROM channel LEFT JOIN xchan ON channel_hash = xchan_hash WHERE channel_id = %d AND channel_removed = 0 LIMIT 1",
 		dbesc($id)
 	);
 
@@ -2177,7 +2261,7 @@ function channelx_by_n($id) {
 /**
  * @brief
  *
- * @param string $channel
+ * @param array $channel
  * @return string
  */
 function channel_reddress($channel) {
@@ -2188,67 +2272,77 @@ function channel_reddress($channel) {
 }
 
 
+/**
+ * @brief Get manual channel conversation update config.
+ *
+ * Check the channel config \e manual_conversation_update, if not set fall back
+ * to global system config, defaults to 1 if nothing set.
+ *
+ * @param int $channel_id
+ * @return int
+ */
 function channel_manual_conv_update($channel_id) {
 
-	$x = get_pconfig($channel_id, 'system','manual_conversation_update');
+	$x = get_pconfig($channel_id, 'system', 'manual_conversation_update');
 	if($x === false)
-		$x = get_config('system','manual_conversation_update', 1);
+		$x = get_config('system', 'manual_conversation_update', 1);
 
 	return intval($x);
 }
 
 
+/**
+ * @brief Return parsed HTML remote_login template.
+ *
+ * @return string with parsed HTML from \e remote_login template
+ */
 function remote_login() {
+	$o = replace_macros(get_markup_template('remote_login.tpl'),array(
+		'$title' => t('Remote Authentication'),
+		'$desc' => t('Enter your channel address (e.g. channel@example.com)'),
+		'$submit' => t('Authenticate')
+	));
 
-		$o = replace_macros(get_markup_template('remote_login.tpl'),array(
-			'$title' => t('Remote Authentication'),
-			'$desc' => t('Enter your channel address (e.g. channel@example.com)'),
-			'$submit' => t('Authenticate')
-		));
-		return $o;
-
+	return $o;
 }
 
 function channel_store_lowlevel($arr) {
-    $store = [
-        'channel_account_id'      => ((array_key_exists('channel_account_id',$arr))      ? $arr['channel_account_id']      : '0'),
-        'channel_primary'         => ((array_key_exists('channel_primary',$arr))         ? $arr['channel_primary']         : '0'),
-        'channel_name'            => ((array_key_exists('channel_name',$arr))            ? $arr['channel_name']            : ''),
-        'channel_address'         => ((array_key_exists('channel_address',$arr))         ? $arr['channel_address']         : ''),
-        'channel_guid'            => ((array_key_exists('channel_guid',$arr))            ? $arr['channel_guid']            : ''),
-        'channel_guid_sig'        => ((array_key_exists('channel_guid_sig',$arr))        ? $arr['channel_guid_sig']        : ''),
-        'channel_hash'            => ((array_key_exists('channel_hash',$arr))            ? $arr['channel_hash']            : ''),
-        'channel_timezone'        => ((array_key_exists('channel_timezone',$arr))        ? $arr['channel_timezone']        : 'UTC'),
-        'channel_location'        => ((array_key_exists('channel_location',$arr))        ? $arr['channel_location']        : ''),
-        'channel_theme'           => ((array_key_exists('channel_theme',$arr))           ? $arr['channel_theme']           : ''),
-        'channel_startpage'       => ((array_key_exists('channel_startpage',$arr))       ? $arr['channel_startpage']       : ''),
-        'channel_pubkey'          => ((array_key_exists('channel_pubkey',$arr))          ? $arr['channel_pubkey']          : ''),
-        'channel_prvkey'          => ((array_key_exists('channel_prvkey',$arr))          ? $arr['channel_prvkey']          : ''),
-        'channel_notifyflags'     => ((array_key_exists('channel_notifyflags',$arr))     ? $arr['channel_notifyflags']     : '65535'),
-        'channel_pageflags'       => ((array_key_exists('channel_pageflags',$arr))       ? $arr['channel_pageflags']       : '0'),
-        'channel_dirdate'         => ((array_key_exists('channel_dirdate',$arr))         ? $arr['channel_dirdate']         : NULL_DATE),
-        'channel_lastpost'        => ((array_key_exists('channel_lastpost',$arr))        ? $arr['channel_lastpost']        : NULL_DATE),
-        'channel_deleted'         => ((array_key_exists('channel_deleted',$arr))         ? $arr['channel_deleted']         : NULL_DATE),
-        'channel_max_anon_mail'   => ((array_key_exists('channel_max_anon_mail',$arr))   ? $arr['channel_max_anon_mail']   : '10'),
-        'channel_max_friend_req'  => ((array_key_exists('channel_max_friend_req',$arr))  ? $arr['channel_max_friend_req']  : '10'),
-        'channel_expire_days'     => ((array_key_exists('channel_expire_days',$arr))     ? $arr['channel_expire_days']     : '0'),
-        'channel_passwd_reset'    => ((array_key_exists('channel_passwd_reset',$arr))    ? $arr['channel_passwd_reset']    : ''),
-        'channel_default_group'   => ((array_key_exists('channel_default_group',$arr))   ? $arr['channel_default_group']   : ''),
-        'channel_allow_cid'       => ((array_key_exists('channel_allow_cid',$arr))       ? $arr['channel_allow_cid']       : ''),
-        'channel_allow_gid'       => ((array_key_exists('channel_allow_gid',$arr))       ? $arr['channel_allow_gid']       : ''),
-        'channel_deny_cid'        => ((array_key_exists('channel_deny_cid',$arr))        ? $arr['channel_deny_cid']        : ''),
-        'channel_deny_gid'        => ((array_key_exists('channel_deny_gid',$arr))        ? $arr['channel_deny_gid']        : ''),
-        'channel_removed'         => ((array_key_exists('channel_removed',$arr))         ? $arr['channel_removed']         : '0'),
-        'channel_system'          => ((array_key_exists('channel_system',$arr))          ? $arr['channel_system']          : '0'),
-
+	$store = [
+		'channel_account_id'      => ((array_key_exists('channel_account_id',$arr))      ? $arr['channel_account_id']      : '0'),
+		'channel_primary'         => ((array_key_exists('channel_primary',$arr))         ? $arr['channel_primary']         : '0'),
+		'channel_name'            => ((array_key_exists('channel_name',$arr))            ? $arr['channel_name']            : ''),
+		'channel_address'         => ((array_key_exists('channel_address',$arr))         ? $arr['channel_address']         : ''),
+		'channel_guid'            => ((array_key_exists('channel_guid',$arr))            ? $arr['channel_guid']            : ''),
+		'channel_guid_sig'        => ((array_key_exists('channel_guid_sig',$arr))        ? $arr['channel_guid_sig']        : ''),
+		'channel_hash'            => ((array_key_exists('channel_hash',$arr))            ? $arr['channel_hash']            : ''),
+		'channel_timezone'        => ((array_key_exists('channel_timezone',$arr))        ? $arr['channel_timezone']        : 'UTC'),
+		'channel_location'        => ((array_key_exists('channel_location',$arr))        ? $arr['channel_location']        : ''),
+		'channel_theme'           => ((array_key_exists('channel_theme',$arr))           ? $arr['channel_theme']           : ''),
+		'channel_startpage'       => ((array_key_exists('channel_startpage',$arr))       ? $arr['channel_startpage']       : ''),
+		'channel_pubkey'          => ((array_key_exists('channel_pubkey',$arr))          ? $arr['channel_pubkey']          : ''),
+		'channel_prvkey'          => ((array_key_exists('channel_prvkey',$arr))          ? $arr['channel_prvkey']          : ''),
+		'channel_notifyflags'     => ((array_key_exists('channel_notifyflags',$arr))     ? $arr['channel_notifyflags']     : '65535'),
+		'channel_pageflags'       => ((array_key_exists('channel_pageflags',$arr))       ? $arr['channel_pageflags']       : '0'),
+		'channel_dirdate'         => ((array_key_exists('channel_dirdate',$arr))         ? $arr['channel_dirdate']         : NULL_DATE),
+		'channel_lastpost'        => ((array_key_exists('channel_lastpost',$arr))        ? $arr['channel_lastpost']        : NULL_DATE),
+		'channel_deleted'         => ((array_key_exists('channel_deleted',$arr))         ? $arr['channel_deleted']         : NULL_DATE),
+		'channel_max_anon_mail'   => ((array_key_exists('channel_max_anon_mail',$arr))   ? $arr['channel_max_anon_mail']   : '10'),
+		'channel_max_friend_req'  => ((array_key_exists('channel_max_friend_req',$arr))  ? $arr['channel_max_friend_req']  : '10'),
+		'channel_expire_days'     => ((array_key_exists('channel_expire_days',$arr))     ? $arr['channel_expire_days']     : '0'),
+		'channel_passwd_reset'    => ((array_key_exists('channel_passwd_reset',$arr))    ? $arr['channel_passwd_reset']    : ''),
+		'channel_default_group'   => ((array_key_exists('channel_default_group',$arr))   ? $arr['channel_default_group']   : ''),
+		'channel_allow_cid'       => ((array_key_exists('channel_allow_cid',$arr))       ? $arr['channel_allow_cid']       : ''),
+		'channel_allow_gid'       => ((array_key_exists('channel_allow_gid',$arr))       ? $arr['channel_allow_gid']       : ''),
+		'channel_deny_cid'        => ((array_key_exists('channel_deny_cid',$arr))        ? $arr['channel_deny_cid']        : ''),
+		'channel_deny_gid'        => ((array_key_exists('channel_deny_gid',$arr))        ? $arr['channel_deny_gid']        : ''),
+		'channel_removed'         => ((array_key_exists('channel_removed',$arr))         ? $arr['channel_removed']         : '0'),
+		'channel_system'          => ((array_key_exists('channel_system',$arr))          ? $arr['channel_system']          : '0'),
 		'channel_moved'           => ((array_key_exists('channel_moved',$arr))           ? $arr['channel_moved']           : ''),
 		'channel_password'        => ((array_key_exists('channel_password',$arr))        ? $arr['channel_password']        : ''),
 		'channel_salt'            => ((array_key_exists('channel_salt',$arr))            ? $arr['channel_salt']            : '')
-
 	];
 
-	return create_table_from_array('channel',$store);
-
+	return create_table_from_array('channel', $store);
 }
 
 function profile_store_lowlevel($arr) {
@@ -2304,16 +2398,22 @@ function profile_store_lowlevel($arr) {
 }
 
 
-// Included here for completeness, but this is a very dangerous operation.
-// It is the caller's responsibility to confirm the requestor's intent and
-// authorisation to do this.
-
-function account_remove($account_id,$local = true,$unset_session = true) {
+/**
+ * Included here for completeness, but this is a very dangerous operation.
+ * It is the caller's responsibility to confirm the requestor's intent and
+ * authorisation to do this.
+ *
+ * @param int $account_id
+ * @param boolean $local (optional) default true
+ * @param boolean $unset_session (optional) default true
+ * @return boolean|array
+ */
+function account_remove($account_id, $local = true, $unset_session = true) {
 
 	logger('account_remove: ' . $account_id);
 
 	if(! intval($account_id)) {
-		logger('account_remove: no account.');
+		logger('No account.');
 		return false;
 	}
 
@@ -2334,7 +2434,7 @@ function account_remove($account_id,$local = true,$unset_session = true) {
 	$account_email=$r[0]['account_email'];
 
 	if(! $r) {
-		logger('account_remove: No account with id: ' . $account_id);
+		logger('No account with id: ' . $account_id);
 		return false;
 	}
 
@@ -2351,7 +2451,6 @@ function account_remove($account_id,$local = true,$unset_session = true) {
 		intval($account_id)
 	);
 
-
 	if ($unset_session) {
 		App::$session->nuke();
 		notice( sprintf(t('Account \'%s\' deleted'),$account_email) . EOL);
@@ -2364,8 +2463,6 @@ function account_remove($account_id,$local = true,$unset_session = true) {
 /**
  * @brief Removes a channel.
  *
- * @hooks channel_remove
- *   * \e array \b entry from channel tabel for $channel_id
  * @param int $channel_id
  * @param boolean $local default true
  * @param boolean $unset_session default false
@@ -2386,6 +2483,11 @@ function channel_remove($channel_id, $local = true, $unset_session = false) {
 
 	$channel = $r[0];
 
+	/**
+	 * @hooks channel_remove
+	 *   Called when removing a channel.
+	 *   * \e array with entry from channel tabel for $channel_id
+	 */
 	call_hooks('channel_remove', $r[0]);
 
 	if(! $local) {
@@ -2457,6 +2559,7 @@ function channel_remove($channel_id, $local = true, $unset_session = false) {
 			$rr = q("update account set account_default_channel = %d where account_id = %d",
 				intval($r[0]['channel_id']),
 				intval(App::$account['account_id']));
+
 			logger("Default channel deleted, changing default to channel_id " . $r[0]['channel_id']);
 		}
 		else {
@@ -2531,20 +2634,30 @@ function channel_codeallowed($channel_id) {
 		return true;
 
 	return false;
-
 }
 
 function anon_identity_init($reqvars) {
 
-	$x = [ 'request_vars' => $reqvars, 'xchan' => null, 'success' => 'unset' ];
-	call_hooks('anon_identity_init',$x);
+	$x = [
+			'request_vars' => $reqvars,
+			'xchan' => null,
+			'success' => 'unset'
+	];
+	/**
+	 * @hooks anon_identity_init
+	 *   * \e array \b request_vars
+	 *   * \e string \b xchan - return value
+	 *   * \e string|int \b success - Must be a number, so xchan return value gets used
+	 */
+	call_hooks('anon_identity_init', $x);
+
 	if($x['success'] !== 'unset' && intval($x['success']) && $x['xchan'])
 		return $x['xchan'];
 
-	// allow a captcha handler to over-ride 
+	// allow a captcha handler to over-ride
 	if($x['success'] !== 'unset' && (intval($x['success']) === 0))
-		return false;	
-	
+		return false;
+
 
 	$anon_name  = strip_tags(trim($reqvars['anonname']));
 	$anon_email = strip_tags(trim($reqvars['anonmail']));
@@ -2571,7 +2684,7 @@ function anon_identity_init($reqvars) {
 	);
 
 	if(! $x) {
-		xchan_store_lowlevel([ 
+		xchan_store_lowlevel([
 			'xchan_guid'    => $anon_email,
 			'xchan_hash'    => $hash,
 			'xchan_name'    => $anon_name,
@@ -2579,7 +2692,7 @@ function anon_identity_init($reqvars) {
 			'xchan_network' => 'unknown',
 			'xchan_name_date' => datetime_convert()
 		]);
-			
+
 
 		$x = q("select * from xchan where xchan_guid = '%s' and xchan_hash = '%s' and xchan_network = 'unknown' limit 1",
 			dbesc($anon_email),
@@ -2597,13 +2710,18 @@ function anon_identity_init($reqvars) {
 			dbesc($anon_email),
 			dbesc($hash)
 		);
-
 	}
 
 	return $x[0];
 }
 
 
+/**
+ * @brief Create a channel array from proxy channel (pchan).
+ *
+ * @param array $pchan The proxy channel
+ * @return array channel array
+ */
 function pchan_to_chan($pchan) {
 	$chan = $pchan;
 	$chan['channel_address'] = $pchan['pchan_guid'];
@@ -2611,5 +2729,7 @@ function pchan_to_chan($pchan) {
 	$chan['channel_pubkey']  = $pchan['pchan_pubkey'];
 	$chan['channel_prvkey']  = $pchan['pchan_prvkey'];
 	$chan['channel_name']    = $pchan['xchan_name'];
+
 	return $chan;
-}
\ No newline at end of file
+}
+
diff --git a/include/datetime.php b/include/datetime.php
index 85e87848b..0fcd957be 100644
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -8,6 +8,8 @@
 /**
  * @brief Two-level sort for timezones.
  *
+ * Can be used in usort() to sort timezones.
+ *
  * @param string $a
  * @param string $b
  * @return number
@@ -27,13 +29,14 @@ function timezone_cmp($a, $b) {
 function is_null_date($s) {
 	if($s === '0000-00-00 00:00:00' || $s === '0001-01-01 00:00:00')
 		return true;
+
 	return false;
 }
 
-
 /**
  * @brief Return timezones grouped (primarily) by continent.
  *
+ * @see timezone_cmp()
  * @return array
  */
 function get_timezones( ){
@@ -54,7 +57,7 @@ function get_timezones( ){
 			$city = $ex[0];
 			$continent = t('Miscellaneous');
 		}
-		$city = str_replace('_', ' ',  t($city));
+		$city = str_replace('_', ' ', t($city));
 
 		if (!x($continents, $ex[0])) $continents[$ex[0]] = array();
 		$continents[$continent][$value] = $city;
@@ -109,7 +112,7 @@ function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d
 	try {
 		$d = new DateTime($s, $from_obj);
 	} catch(Exception $e) {
-		logger('datetime_convert: exception: ' . $e->getMessage());
+		logger('exception: ' . $e->getMessage());
 		$d = new DateTime('now', $from_obj);
 	}
 
@@ -128,7 +131,7 @@ function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d
  * @brief Wrapper for date selector, tailored for use in birthday fields.
  *
  * @param string $dob Date of Birth
- * @return string
+ * @return string Parsed HTML with selector
  */
 function dob($dob) {
 
@@ -161,59 +164,62 @@ function dob($dob) {
 }
 
 /**
- * returns a date selector
- * @param $format
- *  format string, e.g. 'ymd' or 'mdy'. Not currently supported
- * @param $min
- *  unix timestamp of minimum date
- * @param $max
- *  unix timestap of maximum date
- * @param $default
- *  unix timestamp of default date
- * @param $id
- *  id and name of datetimepicker (defaults to "datetimepicker")
+ * @brief Returns a date selector.
+ *
+ * @see datetimesel()
+ * @param string $format
+ *   format string, e.g. 'ymd' or 'mdy'. Not currently supported
+ * @param DateTime $min
+ *   unix timestamp of minimum date
+ * @param DateTime $max
+ *   unix timestap of maximum date
+ * @param DateTime $default
+ *   unix timestamp of default date
+ * @param string $id
+ *   id and name of datetimepicker (defaults to "datetimepicker")
  */
 function datesel($format, $min, $max, $default, $id = 'datepicker') {
-	return datetimesel($format, $min, $max, $default, '', $id,true, false, '', '');
+	return datetimesel($format, $min, $max, $default, '', $id, true, false, '', '');
 }
 
 /**
- * returns a time selector
- * @param $format
- *  format string, e.g. 'ymd' or 'mdy'. Not currently supported
- * @param $h
- *  already selected hour
- * @param $m
+ * @brief Returns a time selector.
+ *
+ * @param string $format
+ *   format string, e.g. 'ymd' or 'mdy'. Not currently supported
+ * @param string $h
+ *   already selected hour
+ * @param string $m
  *  already selected minute
- * @param $id
+ * @param string $id
  *  id and name of datetimepicker (defaults to "timepicker")
  */
 function timesel($format, $h, $m, $id='timepicker') {
-	return datetimesel($format,new DateTime(),new DateTime(),new DateTime("$h:$m"),'', $id,false,true);
+	return datetimesel($format, new DateTime(), new DateTime(), new DateTime("$h:$m"), '', $id, false, true);
 }
 
 /**
  * @brief Returns a datetime selector.
  *
  * @param string $format
- *  format string, e.g. 'ymd' or 'mdy'. Not currently supported
- * @param $min
- *  unix timestamp of minimum date
- * @param $max
- *  unix timestap of maximum date
- * @param $default
- *  unix timestamp of default date
+ *   format string, e.g. 'ymd' or 'mdy'. Not currently supported
+ * @param DateTime $min
+ *   unix timestamp of minimum date
+ * @param DateTime $max
+ *   unix timestap of maximum date
+ * @param DateTime $default
+ *   unix timestamp of default date
  * @param string $label
  * @param string $id
- *  id and name of datetimepicker (defaults to "datetimepicker")
+ *   id and name of datetimepicker (defaults to "datetimepicker")
  * @param boolean $pickdate
- *  true to show date picker (default)
+ *   true to show date picker (default)
  * @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)
+ *   true to show time picker (default)
+ * @param DateTime $minfrom
+ *   set minimum date from picker with id $minfrom (none by default)
+ * @param DateTime $maxfrom
+ *   set maximum date from picker with id $maxfrom (none by default)
  * @param boolean $required default false
  * @param int $first_day (optional) default 0
  * @return string Parsed HTML output.
@@ -343,9 +349,6 @@ function plural_dates($k,$n) {
 	}
 }
 
-
-
-
 /**
  * @brief Returns timezone correct age in years.
  *
@@ -418,7 +421,7 @@ function get_dim($y, $m) {
  *
  * @param int $y Year
  * @param int $m Month (1=January, 12=December)
- * @return day 0 = Sunday through 6 = Saturday
+ * @return string day 0 = Sunday through 6 = Saturday
  */
 function get_first_dim($y, $m) {
 	$d = sprintf('%04d-%02d-01 00:00', intval($y), intval($m));
diff --git a/include/event.php b/include/event.php
index b56a5fb3e..282c1a9d7 100644
--- a/include/event.php
+++ b/include/event.php
@@ -1,15 +1,16 @@
 <?php
-use Sabre\VObject;
-
 /**
  * @file include/event.php
+ * @brief Event related functions.
  */
 
+use Sabre\VObject;
+
 /**
- * @brief Returns an event as HTML
+ * @brief Returns an event as HTML.
  *
  * @param array $ev
- * @return string
+ * @return string HTML formatted event
  */
 function format_event_html($ev) {
 
@@ -21,7 +22,7 @@ function format_event_html($ev) {
 
 	$bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8:01 AM
 
-	//todo: move this to template
+	/// @TODO move this to template
 
 	$o = '<div class="vevent">' . "\r\n";
 
@@ -29,27 +30,27 @@ function format_event_html($ev) {
 
 	$o .= '<div class="event-start"><span class="event-label">' . t('Starts:') . '</span>&nbsp;<span class="dtstart" title="'
 		. datetime_convert('UTC', 'UTC', $ev['dtstart'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
-		. '" >' 
-		. (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(), 
+		. '" >'
+		. (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(),
 			$ev['dtstart'] , $bd_format ))
-			:  day_translate(datetime_convert('UTC', 'UTC', 
+			:  day_translate(datetime_convert('UTC', 'UTC',
 			$ev['dtstart'] , $bd_format)))
 		. '</span></div>' . "\r\n";
 
 	if(! $ev['nofinish'])
 		$o .= '<div class="event-end" ><span class="event-label">' . t('Finishes:') . '</span>&nbsp;<span class="dtend" title="'
 			. datetime_convert('UTC','UTC',$ev['dtend'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
-			. '" >' 
-			. (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(), 
+			. '" >'
+			. (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(),
 				$ev['dtend'] , $bd_format ))
-				:  day_translate(datetime_convert('UTC', 'UTC', 
+				:  day_translate(datetime_convert('UTC', 'UTC',
 				$ev['dtend'] , $bd_format )))
 			. '</span></div>'  . "\r\n";
 
 	$o .= '<div class="event-description">' . zidify_links(smilies(bbcode($ev['description']))) .  '</div>' . "\r\n";
 
 	if(strlen($ev['location']))
-		$o .= '<div class="event-location"><span class="event-label"> ' . t('Location:') . '</span>&nbsp;<span class="location">' 
+		$o .= '<div class="event-location"><span class="event-label"> ' . t('Location:') . '</span>&nbsp;<span class="location">'
 			. zidify_links(smilies(bbcode($ev['location'])))
 			. '</span></div>' . "\r\n";
 
@@ -123,9 +124,9 @@ function format_event_ical($ev) {
 	$o .= "\r\nCREATED:" . datetime_convert('UTC','UTC', $ev['created'],'Ymd\\THis\\Z');
 	$o .= "\r\nLAST-MODIFIED:" . datetime_convert('UTC','UTC', $ev['edited'],'Ymd\\THis\\Z');
 	$o .= "\r\nDTSTAMP:" . datetime_convert('UTC','UTC', $ev['edited'],'Ymd\\THis\\Z');
-	if($ev['dtstart']) 
+	if($ev['dtstart'])
 		$o .= "\r\nDTSTART:" . datetime_convert('UTC','UTC', $ev['dtstart'],'Ymd\\THis' . (($ev['adjust']) ? '\\Z' : ''));
-	if($ev['dtend'] && ! $ev['nofinish']) 
+	if($ev['dtend'] && ! $ev['nofinish'])
 		$o .= "\r\nDTEND:" . datetime_convert('UTC','UTC', $ev['dtend'],'Ymd\\THis' . (($ev['adjust']) ? '\\Z' : ''));
 	if($ev['summary']) {
 		$o .= "\r\nSUMMARY:" . format_ical_text($ev['summary']);
@@ -143,7 +144,7 @@ function format_event_ical($ev) {
 		$o .= "\r\nPRIORITY:" . intval($ev['event_priority']);
 	$o .= "\r\nUID:" . $ev['event_hash'] ;
 	$o .= "\r\nEND:VEVENT\r\n";
-	
+
 	return $o;
 }
 
@@ -156,9 +157,9 @@ function format_todo_ical($ev) {
 	$o .= "\r\nCREATED:" . datetime_convert('UTC','UTC', $ev['created'],'Ymd\\THis\\Z');
 	$o .= "\r\nLAST-MODIFIED:" . datetime_convert('UTC','UTC', $ev['edited'],'Ymd\\THis\\Z');
 	$o .= "\r\nDTSTAMP:" . datetime_convert('UTC','UTC', $ev['edited'],'Ymd\\THis\\Z');
-	if($ev['dtstart']) 
+	if($ev['dtstart'])
 		$o .= "\r\nDTSTART:" . datetime_convert('UTC','UTC', $ev['dtstart'],'Ymd\\THis' . (($ev['adjust']) ? '\\Z' : ''));
-	if($ev['dtend'] && ! $ev['nofinish']) 
+	if($ev['dtend'] && ! $ev['nofinish'])
 		$o .= "\r\nDUE:" . datetime_convert('UTC','UTC', $ev['dtend'],'Ymd\\THis' . (($ev['adjust']) ? '\\Z' : ''));
 	if($ev['summary']) {
 		$o .= "\r\nSUMMARY:" . format_ical_text($ev['summary']);
@@ -170,8 +171,8 @@ function format_todo_ical($ev) {
 			$o .= "\r\nCOMPLETED:" . datetime_convert('UTC','UTC', $ev['event_status_date'],'Ymd\\THis\\Z');
 	}
 	if(intval($ev['event_percent']))
-		$o .= "\r\nPERCENT-COMPLETE:" . $ev['event_percent'];		
-	if(intval($ev['event_sequence'])) 
+		$o .= "\r\nPERCENT-COMPLETE:" . $ev['event_percent'];
+	if(intval($ev['event_sequence']))
 		$o .= "\r\nSEQUENCE:" . $ev['event_sequence'];
 	if($ev['location']) {
 		$o .= "\r\nLOCATION:" . format_ical_text($ev['location']);
@@ -196,12 +197,13 @@ function format_ical_text($s) {
 
 	$s = html2plain(bbcode($s));
 	$s = str_replace(["\r\n","\n"],["",""],$s);
-	return(wordwrap(str_replace(['\\',',',';'],['\\\\','\\,','\\;'],$s),72,"\r\n ",true));
 
+	return(wordwrap(str_replace(['\\',',',';'],['\\\\','\\,','\\;'],$s),72,"\r\n ",true));
 }
 
 function format_ical_sourcetext($s) {
 	$s = base64_encode($s);
+
 	return(wordwrap(str_replace(['\\',',',';'],['\\\\','\\,','\\;'],$s),72,"\r\n ",true));
 }
 
@@ -225,7 +227,7 @@ function format_event_bbcode($ev) {
 
 	if(($ev['dtend']) && (! $ev['nofinish']))
 		$o .= '[event-finish]' . $ev['dtend'] . '[/event-finish]';
- 
+
 	if($ev['location'])
 		$o .= '[event-location]' . $ev['location'] . '[/event-location]';
 
@@ -253,7 +255,6 @@ function bbtoevent($s) {
 
 	$ev = array();
 
-
 	$match = '';
 	if(preg_match("/\[event\](.*?)\[\/event\]/is",$s,$match)) {
 		// only parse one object per event tag
@@ -306,7 +307,7 @@ function bbtoevent($s) {
  *
  * @see ev_compare()
  * @param array $arr
- * @return sorted array
+ * @return array Date sorted array of events
  */
 function sort_by_date($arr) {
 	if (is_array($arr))
@@ -318,6 +319,8 @@ function sort_by_date($arr) {
 /**
  * @brief Compare function for events.
  *
+ * This function can be used in usort() to sort events by date.
+ *
  * @see sort_by_date()
  * @param array $a
  * @param array $b
@@ -375,8 +378,19 @@ function event_store_event($arr) {
 		}
 	}
 
-	$hook_info = [ 'event' => $arr, 'existing_event' => $existing_event, 'cancel' => false ];
-	call_hooks('event_store_event',$hook_info);
+	$hook_info = [
+			'event' => $arr,
+			'existing_event' => $existing_event,
+			'cancel' => false
+	];
+	/**
+	 * @hooks event_store_event
+	 *   Called when an event record is created or updated.
+	 *   * \e array \b event
+	 *   * \e array \b existing_event
+	 *   * \e boolean \b cancel - default false
+	 */
+	call_hooks('event_store_event', $hook_info);
 	if($hook_info['cancel'])
 		return false;
 
@@ -386,7 +400,7 @@ function event_store_event($arr) {
 	if($existing_event) {
 
 		if($existing_event['edited'] >= $arr['edited']) {
-			// Nothing has changed. 
+			// Nothing has changed.
 			return $existing_event;
 		}
 
@@ -444,7 +458,6 @@ function event_store_event($arr) {
 
 		// New event. Store it.
 
-
 		if(array_key_exists('external_id',$arr))
 			$hash = $arr['external_id'];
 		elseif(array_key_exists('event_hash',$arr))
@@ -531,7 +544,7 @@ function event_addtocal($item_id, $uid) {
 		}
 
 		if($ev->private)
-			$ev['allow_cid'] = '<' . $channel['channel_hash'] . '>'; 
+			$ev['allow_cid'] = '<' . $channel['channel_hash'] . '>';
 		else {
 			$acl = new Zotlabs\Access\AccessList($channel);
 			$x = $acl->get();
@@ -596,14 +609,12 @@ function ical_to_ev($s) {
 	date_default_timezone_set($saved_timezone);
 
 	return $ev;
-
 }
 
 
 
 function parse_vobject($ical, $type) {
 
-
 	$ev = [];
 
 	if(! isset($ical->DTSTART)) {
@@ -698,10 +709,8 @@ function parse_vobject($ical, $type) {
 
 
 
-
-
 function parse_ical_file($f,$uid) {
-require_once('vendor/autoload.php');
+	require_once('vendor/autoload.php');
 
 	$s = @file_get_contents($f);
 
@@ -731,6 +740,7 @@ require_once('vendor/autoload.php');
 
 	if($ical)
 		return true;
+
 	return false;
 }
 
@@ -779,7 +789,6 @@ function event_import_ical($ical, $uid) {
 		$ev['created'] = datetime_convert('UTC','UTC',$created->format(\DateTime::W3C));
 	}
 
-
 	if(isset($ical->{'LAST-MODIFIED'})) {
 		$edited = $ical->{'LAST-MODIFIED'}->getDateTime();
 		$ev['edited'] = datetime_convert('UTC','UTC',$edited->format(\DateTime::W3C));
@@ -814,7 +823,7 @@ function event_import_ical($ical, $uid) {
 		else
 			$ev['external_id'] = $evuid;
 	}
-		
+
 	if($ev['summary'] && $ev['dtstart']) {
 		$ev['event_xchan'] = $channel['channel_hash'];
 		$ev['uid']         = $channel['channel_id'];
@@ -822,7 +831,7 @@ function event_import_ical($ical, $uid) {
 		$ev['private']     = 1;
 		$ev['allow_cid']   = '<' . $channel['channel_hash'] . '>';
 
-		logger('storing event: ' . print_r($ev,true), LOGGER_ALL);		
+		logger('storing event: ' . print_r($ev,true), LOGGER_ALL);
 		$event = event_store_event($ev);
 		if($event) {
 			$item_id = event_store_item($ev,$event);
@@ -831,7 +840,6 @@ function event_import_ical($ical, $uid) {
 	}
 
 	return false;
-
 }
 
 function event_ical_get_sourcetext($s) {
@@ -931,7 +939,7 @@ function event_import_ical_task($ical, $uid) {
 	if(isset($ical->SEQUENCE)) {
 		$ev['event_sequence'] = (string) $ical->SEQUENCE;
 		// see if our stored event is more current than the one we're importing
-		if((intval($ev['event_sequence']) <= intval($stored_event['event_sequence'])) 
+		if((intval($ev['event_sequence']) <= intval($stored_event['event_sequence']))
 			&& ($ev['edited'] <= $stored_event['edited']))
 			return false;
 	}
@@ -958,7 +966,7 @@ function event_import_ical_task($ical, $uid) {
 		$ev['private']     = 1;
 		$ev['allow_cid']   = '<' . $channel['channel_hash'] . '>';
 
-		logger('storing event: ' . print_r($ev,true), LOGGER_ALL);		
+		logger('storing event: ' . print_r($ev,true), LOGGER_ALL);
 		$event = event_store_event($ev);
 		if($event) {
 			$item_id = event_store_item($ev,$event);
@@ -967,14 +975,10 @@ function event_import_ical_task($ical, $uid) {
 	}
 
 	return false;
-
 }
 
 
 
-
-
-
 function event_store_item($arr, $event) {
 
 	require_once('include/datetime.php');
@@ -995,7 +999,6 @@ function event_store_item($arr, $event) {
 	}
 
 
-
 	$item_arr = array();
 	$prefix = '';
 //	$birthday = false;
@@ -1008,9 +1011,9 @@ function event_store_item($arr, $event) {
 			$prefix =  t('This event has been added to your calendar.');
 //		$birthday = true;
 
-		// The event is created on your own site by the system, but appears to belong 
+		// 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 
+		// 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.
 
@@ -1048,9 +1051,10 @@ function event_store_item($arr, $event) {
 
 		$private = (($arr['allow_cid'] || $arr['allow_gid'] || $arr['deny_cid'] || $arr['deny_gid']) ? 1 : 0);
 
-		// @FIXME can only update sig if we have the author's channel on this site
-		// Until fixed, set it to nothing so it won't give us signature errors
-
+		/**
+		 * @FIXME can only update sig if we have the author's channel on this site
+		 * Until fixed, set it to nothing so it won't give us signature errors.
+		 */
 		$sig = '';
 
 		q("UPDATE item SET title = '%s', body = '%s', obj = '%s', allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s', edited = '%s', sig = '%s', item_flags = %d, item_private = %d, obj_type = '%s'  WHERE id = %d AND uid = %d",
@@ -1090,6 +1094,10 @@ function event_store_item($arr, $event) {
 		}
 
 		$item_id = $r[0]['id'];
+		/**
+		 * @hooks event_updated
+		 *   Called when an event record is modified.
+		 */
 		call_hooks('event_updated', $event['id']);
 
 		return $item_id;
@@ -1103,7 +1111,7 @@ function event_store_item($arr, $event) {
 
 		$item_wall = 0;
 		$item_origin = 0;
-		$item_thread_top = 0;				
+		$item_thread_top = 0;
 
 		if($item) {
 			$item_arr['id'] = $item['id'];
@@ -1196,6 +1204,10 @@ function event_store_item($arr, $event) {
 
 		$item_id = $res['item_id'];
 
+		/**
+		 * @hooks event_created
+		 *   Called when an event record is created.
+		 */
 		call_hooks('event_created', $event['id']);
 
 		return $item_id;
@@ -1216,25 +1228,24 @@ function todo_stat() {
 
 function tasks_fetch($arr) {
 
-   if(! local_channel())
-        return;
+	if(! local_channel())
+		return;
 
-    $ret = array();
-    $sql_extra = " and event_status != 'COMPLETED' ";
-    if($arr && $arr['all'] == 1)
-        $sql_extra = '';
+	$ret = array();
+	$sql_extra = " and event_status != 'COMPLETED' ";
+	if($arr && $arr['all'] == 1)
+		$sql_extra = '';
 
-    $r = q("select * from event where etype = 'task' and uid = %d $sql_extra order by created desc",
-        intval(local_channel())
-    );
+	$r = q("select * from event where etype = 'task' and uid = %d $sql_extra order by created desc",
+		intval(local_channel())
+	);
 
-    $ret['success'] = (($r) ? true : false);
-    if($r) {
-        $ret['tasks'] = $r;
-    }
+	$ret['success'] = (($r) ? true : false);
+	if($r) {
+		$ret['tasks'] = $r;
+	}
 
 	return $ret;
-
 }
 
 function cdav_principal($uri) {
diff --git a/include/feedutils.php b/include/feedutils.php
index 217da8188..1284c45a3 100644
--- a/include/feedutils.php
+++ b/include/feedutils.php
@@ -1,5 +1,8 @@
 <?php
-
+/**
+ * @file include/feedutils.php
+ * @brief Some functions to work with XML feeds.
+ */
 
 /**
  * @brief Return an Atom feed for channel.
@@ -57,7 +60,6 @@ function get_public_feed($channel, $params) {
  * @param array $params
  * @return string with an atom feed
  */
-
 function get_feed_for($channel, $observer_hash, $params) {
 
 	if(! $channel)
@@ -105,12 +107,28 @@ function get_feed_for($channel, $observer_hash, $params) {
 	));
 
 
-	$x = [ 'xml' => $atom, 'channel' => $channel, 'observer_hash' => $observer_hash, 'params' => $params ];
-	call_hooks('atom_feed_top',$x);
+	$x = [
+			'xml' => $atom,
+			'channel' => $channel,
+			'observer_hash' => $observer_hash,
+			'params' => $params
+	];
+	/**
+	 * @hooks atom_feed_top
+	 *   * \e string \b xml - the generated feed and what will get returned from the hook
+	 *   * \e array \b channel
+	 *   * \e string \b observer_hash
+	 *   * \e array \b params
+	 */
+	call_hooks('atom_feed_top', $x);
 
 	$atom = $x['xml'];
 
-	// a much simpler interface
+	/**
+	 * @hooks atom_feed
+	 *   A much simpler interface than atom_feed_top.
+	 *   * \e string - the feed after atom_feed_top hook
+	 */
 	call_hooks('atom_feed', $atom);
 
 	$items = items_fetch(
@@ -135,11 +153,14 @@ function get_feed_for($channel, $observer_hash, $params) {
 			if($item['item_private'])
 				continue;
 
-			/** @BUG $owner is undefined in this call */
 			$atom .= atom_entry($item, $type, null, $owner, true, '', $params['compat']);
 		}
 	}
 
+	/**
+	 * @hooks atom_feed_end
+	 *   \e string - The created XML feed as a string without closing tag
+	 */
 	call_hooks('atom_feed_end', $atom);
 
 	$atom .= '</feed>' . "\r\n";
@@ -344,6 +365,7 @@ function get_atom_elements($feed, $item, &$author) {
 		}
 	}
 
+
 	// check for a yahoo media element (github etc.)
 
 	if(! $author['author_photo']) {
@@ -356,7 +378,6 @@ function get_atom_elements($feed, $item, &$author) {
 
 	// No photo/profile-link on the item - look at the feed level
 
-
 	if((! (x($author,'author_link'))) || (! (x($author,'author_photo')))) {
 		$rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 		if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
@@ -396,7 +417,7 @@ function get_atom_elements($feed, $item, &$author) {
 		// new style
 		$ostatus_conversation = normalise_id(unxmlify($rawcnv[0]['attribs']['']['ref']));
 		if(! $ostatus_conversation) {
-			// old style 
+			// old style
 			$ostatus_conversation = normalise_id(unxmlify($rawcnv[0]['data']));
 		}
 		if($ostatus_conversation) {
@@ -406,7 +427,7 @@ function get_atom_elements($feed, $item, &$author) {
 	}
 
 	$ostatus_protocol = (($ostatus_conversation) ? true : false);
-	
+
 	$mastodon = (($item->get_item_tags('http://mastodon.social/schema/1.0','scope')) ? true : false);
 	if($mastodon) {
 		$ostatus_protocol = true;
@@ -645,7 +666,7 @@ function get_atom_elements($feed, $item, &$author) {
 			$res['attach'][] = array('href' => $link, 'length' => $len, 'type' => $type, 'title' => $title );
 		}
 	}
-	
+
 
 	$rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 
@@ -723,7 +744,6 @@ function get_atom_elements($feed, $item, &$author) {
 		$res['target'] = $obj;
 	}
 
-	
 
 	if(array_key_exists('verb',$res) && $res['verb'] === ACTIVITY_SHARE
 		&& array_key_exists('obj_type',$res) && in_array($res['obj_type'], [ ACTIVITY_OBJ_NOTE, ACTIVITY_OBJ_COMMENT, ACTIVITY_OBJ_ACTIVITY ] )) {
@@ -737,7 +757,13 @@ function get_atom_elements($feed, $item, &$author) {
 			'author' => $author,
 			'result' => $res
 	];
-
+	/**
+	 * @hooks parse_atom
+	 *    * \e SimplePie \b feed - The original SimplePie feed
+	 *    * \e array \b item
+	 *    * \e array \b author
+	 *    * \e array \b result - the result array that will also get returned
+	 */
 	call_hooks('parse_atom', $arr);
 
 	logger('author: ' .print_r($arr['author'], true), LOGGER_DATA);
@@ -782,7 +808,7 @@ function feed_get_reshare(&$res,$item) {
 			$share['avatar'] = z_root() . '/' . get_default_profile_photo(80);
 		if(! $share['profile'])
 			$share['profile'] = z_root();
-	
+
 		$child = $rawobj[0]['child'];
 
 
@@ -809,7 +835,7 @@ function feed_get_reshare(&$res,$item) {
 				$body = html2bbcode($body);
 			}
 		}
-	
+
 		$attach = $share['links'];
 
 		if($attach) {
@@ -845,16 +871,16 @@ function feed_get_reshare(&$res,$item) {
 				}
 			}
 		}
-	
+
 		if((! $body) && ($share['alternate'])) {
 			$body = $share['alternate'];
-		}			
+		}
 
-		$res['body'] = "[share author='" . urlencode($share['author']) . 
+		$res['body'] = "[share author='" . urlencode($share['author']) .
 			"' profile='"    . $share['profile'] .
 			"' avatar='"     . $share['avatar']  .
 			"' link='"       . $share['alternate']    .
-			"' posted='"     . $share['created'] . 
+			"' posted='"     . $share['created'] .
 			"' message_id='" . $share['message_id'] . "']";
 
 		$res['body'] .= $body;
@@ -864,7 +890,6 @@ function feed_get_reshare(&$res,$item) {
 }
 
 
-
 /**
  * @brief Encodes SimplePie_Item link arrays.
  *
@@ -940,7 +965,7 @@ function process_feed_tombstones($feed,$importer,$contact,$pass) {
  *
  * @param string $xml
  *   The (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
- * @param $importer
+ * @param array $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[in,out] array $contact
@@ -1103,7 +1128,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 				// Update content if 'updated' changes
 
 				if($r) {
-					if(activity_match($datarray['verb'],ACTIVITY_DELETE) 
+					if(activity_match($datarray['verb'],ACTIVITY_DELETE)
 						&& $datarray['author_xchan'] === $r[0]['author_xchan']) {
 						if(! intval($r[0]['item_deleted'])) {
 							logger('deleting item ' . $r[0]['id'] . ' mid=' . $datarray['mid'], LOGGER_DEBUG);
@@ -1147,6 +1172,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 						$datarray['parent_mid'] = $pmid;
 					}
 				}
+
 				if(($item_parent_mid) && (! $pmid)) {
 					logger('find_parent: matched in-reply-to: ' . $parent_mid, LOGGER_DEBUG);
 					$pmid = $item_parent_mid[0]['parent_mid'];
@@ -1172,7 +1198,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 								dbesc($parent_mid),
 								intval($importer['channel_id'])
 							);
-				
+
 							if($x) {
 								$item_parent_mid = $x;
 								$pmid = $x[0]['parent_mid'];
@@ -1205,7 +1231,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 					);
 					if($r) {
 						$parent_item = $r[0];
-						if(intval($parent_item['item_nocomment']) || $parent_item['comment_policy'] === 'none' 
+						if(intval($parent_item['item_nocomment']) || $parent_item['comment_policy'] === 'none'
 							|| ($parent_item['comments_closed'] > NULL_DATE && $parent_item['comments_closed'] < datetime_convert())) {
 							logger('comments disabled for post ' . $parent_item['mid']);
 							continue;
@@ -1215,7 +1241,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 					$allowed = false;
 
 					if($parent_item) {
-						if($parent_item['owner_xchan'] == $importer['channel_hash']) 
+						if($parent_item['owner_xchan'] == $importer['channel_hash'])
 							$allowed = perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'post_comments');
 						else
 							$allowed = true;
@@ -1230,16 +1256,17 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 						// interactive feeds (such as OStatus) downstream to our followers
 						// We do not want to set it for non-interactive feeds or conversations we do not own
 
-						if(array_key_exists('send_downstream',$importer) && intval($importer['send_downstream']) 
+						if(array_key_exists('send_downstream',$importer) && intval($importer['send_downstream'])
 							&& ($parent_item['owner_xchan'] == $importer['channel_hash'])) {
 							$send_downstream = true;
 						}
 					}
 					else {
 						if((! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream')) && (! $importer['system'])) {
-							// @fixme check for and process ostatus autofriend
-							// otherwise 
-
+							/**
+							 * @fixme check for and process ostatus autofriend
+							 * otherwise ignore this author.
+							 */
 							logger('Ignoring this author.');
 							continue;
 						}
@@ -1249,13 +1276,13 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 
 					// immediate parent wasn't found. Turn into a top-level post if permissions allow
 					// but save the thread_parent in case we need to refer to it later.
-  
+
 					if(! post_is_importable($datarray, $contact))
 						continue;
+
 					$datarray['parent_mid'] = $datarray['mid'];
 					set_iconfig($datarray,'system','parent_mid',$parent_mid,true);
 				}
-				
 
 				// allow likes of comments
 
@@ -1306,7 +1333,6 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 				}
 
 
-
 				// if we have everything but a photo, provide the default profile photo
 
 				if($author['author_name'] && $author['author_link'] && (! $author['author_photo']))
@@ -1364,7 +1390,7 @@ function consume_feed($xml, $importer, &$contact, $pass = 0) {
 				// Update content if 'updated' changes
 
 				if($r) {
-					if(activity_match($datarray['verb'],ACTIVITY_DELETE) 
+					if(activity_match($datarray['verb'],ACTIVITY_DELETE)
 						&& $datarray['author_xchan'] === $r[0]['author_xchan']) {
 						if(! intval($r[0]['item_deleted'])) {
 							logger('deleting item ' . $r[0]['id'] . ' mid=' . $datarray['mid'], LOGGER_DEBUG);
@@ -1426,12 +1452,12 @@ function feed_conversation_fetch($importer,$contact,$parent_link) {
 	// GNU-Social flavoured feeds
 	if(strpos($parent_link,'/notice/')) {
 		$link = str_replace('/notice/','/api/statuses/show/',$parent_link) . '.atom';
-	} 
+	}
 
 	// Mastodon flavoured feeds
 	if(strpos($parent_link,'/users/') && strpos($parent_link,'/updates/')) {
 		$link = $parent_link . '.atom';
-	} 
+	}
 
 	if(! $link)
 		return false;
@@ -1446,21 +1472,21 @@ function feed_conversation_fetch($importer,$contact,$parent_link) {
 	$data = $fetch['body'];
 
 	// We will probably receive an atom 'entry' and not an atom 'feed'. Unfortunately
-	// our parser is a bit strict about compliance so we'll insert just enough of a feed 
-	// tag to trick it into believing it's a compliant feed. 
+	// our parser is a bit strict about compliance so we'll insert just enough of a feed
+	// tag to trick it into believing it's a compliant feed.
 
 	if(! strstr($data,'<feed')) {
-		$data = str_replace('<entry ','<feed xmlns="http://www.w3.org/2005/Atom"><entry ',$data); 
+		$data = str_replace('<entry ','<feed xmlns="http://www.w3.org/2005/Atom"><entry ',$data);
 		$data .= '</feed>';
-	} 
- 
+	}
+
 	consume_feed($data,$importer,$contact,1);
 	consume_feed($data,$importer,$contact,2);
 
 	return true;
-	
 }
 
+
 /**
  * @brief Normalise an id.
  *
@@ -1479,7 +1505,7 @@ function normalise_id($id) {
  *
  * @param string $xml
  *   The (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
- * @param $importer
+ * @param array $importer (unused)
  *   The contact_record (joined to user_record) of the local user who owns this
  *   relationship. It is this person's stuff that is going to be updated.
  */
@@ -1617,6 +1643,7 @@ function feed_meta($xml) {
 	return $ret;
 }
 
+
 /**
  * @brief Not yet implemented function to update feed item.
  *
@@ -1627,6 +1654,7 @@ function update_feed_item($uid, $datarray) {
 	item_store_update($datarray);
 }
 
+
 /**
  * @brief Fetch the content of a feed and further consume it.
  *
@@ -1659,11 +1687,10 @@ function handle_feed($uid, $abook_id, $url) {
 	}
 }
 
+
 /**
  * @brief Return a XML tag with author information.
  *
- * @hooks \b atom_author Possibility to add further tags to returned XML string
- *   * \e string The created XML tag as a string without closing tag
  * @param string $tag The XML tag to create
  * @param string $nick preferred username
  * @param string $name displayed name of the author
@@ -1695,6 +1722,11 @@ function atom_author($tag, $nick, $name, $uri, $h, $w, $type, $photo) {
 	$o .= '  <poco:preferredUsername>' . $nick . '</poco:preferredUsername>' . "\r\n";
 	$o .= '  <poco:displayName>' . $name . '</poco:displayName>' . "\r\n";
 
+	/**
+	 * @hooks atom_author
+	 *  Possibility to add further tags to returned XML string
+	 *   * \e string - The created XML tag as a string without closing tag
+	 */
 	call_hooks('atom_author', $o);
 
 	$o .= "</$tag>\r\n";
@@ -1703,9 +1735,15 @@ function atom_author($tag, $nick, $name, $uri, $h, $w, $type, $photo) {
 }
 
 
-function atom_render_author($tag,$xchan) {
+/**
+ * @brief
+ *
+ * @param string $tag
+ * @param array $xchan
+ * @return string An xml tag
+ */
+function atom_render_author($tag, $xchan) {
 
-	
 	$nick = xmlify(substr($xchan['xchan_addr'],0,strpos($xchan['xchan_addr'],'@')));
 	$id   = xmlify($xchan['xchan_url']);
 	$name = xmlify($xchan['xchan_name']);
@@ -1724,13 +1762,15 @@ function atom_render_author($tag,$xchan) {
 	$o .= '  <poco:preferredUsername>' . $nick . '</poco:preferredUsername>' . "\r\n";
 	$o .= '  <poco:displayName>' . $name . '</poco:displayName>' . "\r\n";
 
+	/**
+	 * @hooks atom_render_author
+	 *   * \e string - The created XML tag as a string without closing tag
+	 */
 	call_hooks('atom_render_author', $o);
 
 	$o .= "</$tag>\r\n";
 
 	return $o;
-
-
 }
 
 function compat_photos_list($s) {
@@ -1740,7 +1780,7 @@ function compat_photos_list($s) {
 	$found = preg_match_all('/\[[zi]mg(.*?)\](.*?)\[/ism',$s,$matches,PREG_SET_ORDER);
 
 	if($found) {
-		foreach($matches as $match) {			
+		foreach($matches as $match) {
 			$ret[] = [
 				'href' => $match[2],
 				'length' => 0,
@@ -1754,7 +1794,6 @@ function compat_photos_list($s) {
 }
 
 
-
 /**
  * @brief Create an item for the Atom feed.
  *
@@ -1766,11 +1805,11 @@ function compat_photos_list($s) {
  * @param array $owner
  * @param string $comment default false
  * @param number $cid default 0
+ * @param boolean $compat default false
  * @return void|string
  */
 function atom_entry($item, $type, $author, $owner, $comment = false, $cid = 0, $compat = false) {
 
-
 	if(! $item['parent'])
 		return;
 
@@ -1922,9 +1961,17 @@ function atom_entry($item, $type, $author, $owner, $comment = false, $cid = 0, $
 		'abook_id' => $cid,
 		'entry'    => $o
 	];
-
+	/**
+	 * @hooks atom_entry
+	 *   * \e array \b item
+	 *   * \e string \b type
+	 *   * \e array \b author
+	 *   * \e array \b owner
+	 *   * \e string \b comment
+	 *   * \e number \b abook_id
+	 *   * \e string \b entry - The generated entry and what will get returned
+	 */
 	call_hooks('atom_entry', $x);
 
 	return $x['entry'];
 }
-
diff --git a/include/items.php b/include/items.php
index 08e53553b..3934f6194 100755
--- a/include/items.php
+++ b/include/items.php
@@ -1,6 +1,7 @@
 <?php
 /**
  * @file include/items.php
+ * @brief Items related functions.
  */
 
 use Zotlabs\Lib as Zlib;
@@ -208,7 +209,7 @@ function is_item_normal($item) {
 }
 
 /**
- * @brief
+ * @brief Decide if current observer has sufficient privileges to comment on item.
  *
  * 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()
@@ -224,10 +225,20 @@ function is_item_normal($item) {
  */
 function can_comment_on_post($observer_xchan, $item) {
 
-//	logger('can_comment_on_post: comment_policy: ' . $item['comment_policy'], LOGGER_DEBUG);
-
-	$x = [ 'observer_hash' => $observer_xchan, 'item' => $item, 'allowed' => 'unset' ];
-	call_hooks('can_comment_on_post',$x);
+//	logger('Comment_policy: ' . $item['comment_policy'], LOGGER_DEBUG);
+
+	$x = [
+			'observer_hash' => $observer_xchan,
+			'item' => $item,
+	];
+	/**
+	 * @hooks can_comment_on_post
+	 *   Called when deciding whether or not to present a comment box for a post.
+	 *   * \e string \b observer_hash
+	 *   * \e array \b item
+	 *   * \e boolean \b allowed - return value
+	 */
+	call_hooks('can_comment_on_post', $x);
 	if($x['allowed'] !== 'unset')
 		return $x['allowed'];
 
@@ -386,10 +397,14 @@ function post_activity_item($arr, $allow_code = false, $deliver = true) {
 
 	$_REQUEST['api_source'] = 1;
 
-	call_hooks('post_local',$arr);
+	/**
+	 * @hooks post_local
+	 *   Called when an item has been posted on this machine via mod/item.php (also via API).
+	 */
+	call_hooks('post_local', $arr);
 
-	if(x($arr,'cancel')) {
-		logger('post_activity_item: post cancelled by plugin.');
+	if(x($arr, 'cancel')) {
+		logger('Post cancelled by plugin.');
 		return $ret;
 	}
 
@@ -400,6 +415,12 @@ function post_activity_item($arr, $allow_code = false, $deliver = true) {
 		$ret['success'] = true;
 		$ret['item_id'] = $post_id;
 		$ret['activity'] = $post['item'];
+
+		/**
+		 * @hooks post_local_end
+		 *   Called after a local post operation has completed.
+		 *   * \e array - the item returned from item_store()
+		 */
 		call_hooks('post_local_end', $ret['activity']);
 	}
 
@@ -407,8 +428,8 @@ function post_activity_item($arr, $allow_code = false, $deliver = true) {
 		Zotlabs\Daemon\Master::Summon(array('Notifier','activity',$post_id));
 	}
 
-
 	$ret['success'] = true;
+
 	return $ret;
 }
 
@@ -430,7 +451,6 @@ function validate_item_elements($message,$arr) {
 		$result['success'] = true;
 
 	return $result;
-
 }
 
 
@@ -469,7 +489,7 @@ function limit_body_size($body) {
 
 				if( ($textlen + $img_start) > $maxlen ) {
 					if($textlen < $maxlen) {
-						logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG);
+						logger('The limit happens before an embedded image', LOGGER_DEBUG);
 						$new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 						$textlen = $maxlen;
 					}
@@ -799,8 +819,17 @@ function get_item_elements($x,$allow_code = false) {
 
 function import_author_xchan($x) {
 
-	$arr = array('xchan' => $x, 'xchan_hash' => '');
-	call_hooks('import_author_xchan',$arr);
+	$arr = [
+			'xchan' => $x,
+			'xchan_hash' => ''
+	];
+	/**
+	 * @hooks import_author_xchan
+	 *   Called when looking up an author of a post by xchan_hash to ensure they have an xchan record on our site.
+	 *   * \e array \b xchan
+	 *   * \e string \b xchan_hash - Thre returned value
+	 */
+	call_hooks('import_author_xchan', $arr);
 	if($arr['xchan_hash'])
 		return $arr['xchan_hash'];
 
@@ -823,7 +852,6 @@ function import_author_xchan($x) {
 	}
 
 	return($y);
-
 }
 
 /**
@@ -835,7 +863,6 @@ function import_author_xchan($x) {
  *   * \e string \b guid
  * @return boolean|string
  */
-
 function import_author_rss($x) {
 	if(! $x['url'])
 		return false;
@@ -844,7 +871,7 @@ function import_author_rss($x) {
 		dbesc($x['url'])
 	);
 	if($r) {
-		logger('import_author_rss: in cache' , LOGGER_DEBUG);
+		logger('In cache' , LOGGER_DEBUG);
 		return $r[0]['xchan_hash'];
 	}
 	$name = trim($x['name']);
@@ -883,7 +910,15 @@ function import_author_rss($x) {
 
 function import_author_unknown($x) {
 
-	$arr = [ 'author' => $x, 'result' => false ];
+	$arr = [
+			'author' => $x,
+			'result' => false
+	];
+	/**
+	 * @hooks import_author
+	 *   * \e array \b author
+	 *   * \e boolean|string \b result - Return value, default false
+	 */
 	call_hooks('import_author', $arr);
 	if($arr['result'])
 		return $arr['result'];
@@ -895,7 +930,7 @@ function import_author_unknown($x) {
 		dbesc($x['url'])
 	);
 	if($r) {
-		logger('import_author_unknown: in cache' , LOGGER_DEBUG);
+		logger('In cache' , LOGGER_DEBUG);
 		return $r[0]['xchan_hash'];
 	}
 
@@ -1469,8 +1504,11 @@ function get_profile_elements($x) {
 }
 
 
-
-
+/**
+ * @brief Signs an item body.
+ *
+ * @param[in,out] array $item
+ */
 function item_sign(&$item) {
 
 	if(array_key_exists('sig',$item) && $item['sig'])
@@ -1483,14 +1521,13 @@ function item_sign(&$item) {
 	if(! $r)
 		return;
 
-	$item['sig'] = base64url_encode(rsa_sign($item['body'],$r[0]['channel_prvkey']));
+	$item['sig'] = base64url_encode(rsa_sign($item['body'], $r[0]['channel_prvkey']));
 	$item['item_verified'] = 1;
-
 }
 
 
 /**
- * @brief
+ * @brief Stores an item type record.
  *
  * @param array $arr
  * @param boolean $allow_exec (optional) default false
@@ -1502,8 +1539,17 @@ function item_sign(&$item) {
  */
 function item_store($arr, $allow_exec = false, $deliver = true) {
 
-	$d = array('item' => $arr, 'allow_exec' => $allow_exec);
-	call_hooks('item_store', $d );
+	$d = [
+			'item' => $arr,
+			'allow_exec' => $allow_exec
+	];
+	/**
+	 * @hooks item_store
+	 *   Called when item_store() stores a record of type item.
+	 *   * \e array \b item
+	 *   * \e boolean \b allow_exec
+	 */
+	call_hooks('item_store', $d);
 	$arr = $d['item'];
 	$allow_exec = $d['allow_exec'];
 
@@ -1548,7 +1594,6 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 		return $ret;
 	}
 
-
 	$arr['title'] = ((array_key_exists('title',$arr) && strlen($arr['title']))  ? trim($arr['title']) : '');
 	$arr['body']  = ((array_key_exists('body',$arr) && strlen($arr['body']))    ? trim($arr['body'])  : '');
 
@@ -1566,7 +1611,6 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 	$arr['item_flags']    = ((x($arr,'item_flags'))    ? intval($arr['item_flags'])          : 0 );
 
 
-
 	$arr['lang'] = detect_language($arr['body']);
 
 	// apply the input filter here
@@ -1581,10 +1625,23 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 	$allowed_languages = get_pconfig($arr['uid'],'system','allowed_languages');
 
 	if((is_array($allowed_languages)) && ($arr['lang']) && (! array_key_exists($arr['lang'],$allowed_languages))) {
-		$translate = array('item' => $arr, 'from' => $arr['lang'], 'to' => $allowed_languages, 'translated' => false);
+		$translate = [
+				'item' => $arr,
+				'from' => $arr['lang'],
+				'to' => $allowed_languages,
+				'translated' => false
+		];
+		/**
+		 * @hooks item_translate
+		 *   Called from item_store and item_store_update after the post language has been autodetected.
+		 *   * \e array \b item
+		 *   * \e string \b from
+		 *   * \e string \b to
+		 *   * \e boolean \b translated
+		 */
 		call_hooks('item_translate', $translate);
 		if((! $translate['translated']) && (intval(get_pconfig($arr['uid'],'system','reject_disallowed_languages')))) {
-			logger('item_store: language ' . $arr['lang'] . ' not accepted for uid ' . $arr['uid']);
+			logger('language ' . $arr['lang'] . ' not accepted for uid ' . $arr['uid']);
 			$ret['message'] = 'language not accepted';
 			return $ret;
 		}
@@ -1776,18 +1833,26 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 		intval($arr['revision'])
 	);
 	if($r) {
-		logger('item_store: duplicate item ignored. ' . print_r($arr,true));
+		logger('duplicate item ignored. ' . print_r($arr,true));
 		$ret['message'] = 'duplicate post.';
 		return $ret;
 	}
 
-	call_hooks('item_store',$arr);
+	/**
+	 * @hooks item_store
+	 *   Called when item_store() stores a record of type item.
+	 */
+	call_hooks('item_store', $arr);
 
-	// This hook remains for backward compatibility.
-	call_hooks('post_remote',$arr);
+	/**
+	 * @hooks post_remote
+	 *   Called when an activity arrives from another site.
+	 *   This hook remains for backward compatibility.
+	 */
+	call_hooks('post_remote', $arr);
 
-	if(x($arr,'cancel')) {
-		logger('item_store: post cancelled by plugin.');
+	if(x($arr, 'cancel')) {
+		logger('Post cancelled by plugin.');
 		$ret['message'] = 'cancelled.';
 		return $ret;
 	}
@@ -1894,7 +1959,11 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 
 	$ret['item'] = $arr;
 
-	call_hooks('post_remote_end',$arr);
+	/**
+	 * @hooks post_remote_end
+	 *   Called after processing a remote post.
+	 */
+	call_hooks('post_remote_end', $arr);
 
 	// update the commented timestamp on the parent - unless this is potentially a clone of an older item
 	// which we don't wish to bring to the surface. As the queue only holds deliveries for 3 days, it's
@@ -1931,11 +2000,28 @@ function item_store($arr, $allow_exec = false, $deliver = true) {
 }
 
 
-
-function item_store_update($arr,$allow_exec = false, $deliver = true) {
-
-	$d = array('item' => $arr, 'allow_exec' => $allow_exec);
-	call_hooks('item_store_update', $d );
+/**
+ * @brief Update a stored item.
+ *
+ * @param array $arr an item
+ * @param boolean $allow_exec (optional) default false
+ * @param boolean $deliver (optional) default true
+ * @return array
+ */
+function item_store_update($arr, $allow_exec = false, $deliver = true) {
+
+	$d = [
+			'item' => $arr,
+			'allow_exec' => $allow_exec
+	];
+	/**
+	 * @hooks item_store_update
+	 *   Called when item_store_update() is called to update a stored item. It
+	 *   overwrites the function's parameters $arr and $allow_exec.
+	 *   * \e array \b item
+	 *   * \e boolean \b allow_exec
+	 */
+	call_hooks('item_store_update', $d);
 	$arr = $d['item'];
 	$allow_exec = $d['allow_exec'];
 
@@ -1947,12 +2033,12 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 	}
 
 	if(! intval($arr['uid'])) {
-		logger('item_store_update: no uid');
+		logger('no uid');
 		$ret['message'] = 'no uid.';
 		return $ret;
 	}
 	if(! intval($arr['id'])) {
-		logger('item_store_update: no id');
+		logger('no id');
 		$ret['message'] = 'no id.';
 		return $ret;
 	}
@@ -1965,7 +2051,7 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 		intval($uid)
 	);
 	if(! $orig) {
-		logger('item_store_update: original post not found: ' . $orig_post_id);
+		logger('Original post not found: ' . $orig_post_id);
 		$ret['message'] = 'no original';
 		return $ret;
 	}
@@ -1997,7 +2083,20 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 	$allowed_languages = get_pconfig($arr['uid'],'system','allowed_languages');
 
 	if((is_array($allowed_languages)) && ($arr['lang']) && (! array_key_exists($arr['lang'],$allowed_languages))) {
-		$translate = array('item' => $arr, 'from' => $arr['lang'], 'to' => $allowed_languages, 'translated' => false);
+		$translate = [
+				'item' => $arr,
+				'from' => $arr['lang'],
+				'to' => $allowed_languages,
+				'translated' => false
+		];
+		/**
+		 * @hooks item_translate
+		 *   Called from item_store() and item_store_update() after the post language has been autodetected.
+		 *   * \e array \b item - returned value
+		 *   * \e string \b from
+		 *   * \e string \b to
+		 *   * \e boolean \b translated - default false, set true if hook translated it and provide it in item
+		 */
 		call_hooks('item_translate', $translate);
 		if((! $translate['translated']) && (intval(get_pconfig($arr['uid'],'system','reject_disallowed_languages')))) {
 			logger('item_store: language ' . $arr['lang'] . ' not accepted for uid ' . $arr['uid']);
@@ -2097,18 +2196,20 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 	$arr['item_pending_remove']    = ((array_key_exists('item_pending_remove',$arr))    ? intval($arr['item_pending_remove'])          : $orig[0]['item_pending_remove'] );
 	$arr['item_blocked']    = ((array_key_exists('item_blocked',$arr))    ? intval($arr['item_blocked'])          : $orig[0]['item_blocked'] );
 
-
-
 	$arr['sig']           = ((x($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);
+	/**
+	 * @hooks post_remote_update
+	 *   Called when processing a remote post that involved an edit or update.
+	 */
+	call_hooks('post_remote_update', $arr);
 
-	if(x($arr,'cancel')) {
-		logger('item_store_update: post cancelled by plugin.');
+	if(x($arr, 'cancel')) {
+		logger('Post cancelled by plugin.');
 		$ret['message'] = 'cancelled.';
 		return $ret;
 	}
@@ -2145,9 +2246,9 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 	$r = dbq("update item set " . $str . " where id = " . $orig_post_id );
 
 	if($r)
-		logger('item_store_update: updated item ' . $orig_post_id, LOGGER_DEBUG);
+		logger('Updated item ' . $orig_post_id, LOGGER_DEBUG);
 	else {
-		logger('item_store_update: could not update item');
+		logger('Could not update item');
 		$ret['message'] = 'DB update failed.';
 		return $ret;
 	}
@@ -2194,7 +2295,11 @@ function item_store_update($arr,$allow_exec = false, $deliver = true) {
 
 	$ret['item'] = $arr;
 
-	call_hooks('post_remote_update_end',$arr);
+	/**
+	 * @hooks post_remote_update_end
+	 *   Called after processing a remote post that involved an edit or update.
+	 */
+	call_hooks('post_remote_update_end', $arr);
 
 	if($deliver) {
 		send_status_notifications($orig_post_id,$arr);
@@ -2427,7 +2532,7 @@ function tag_deliver($uid, $item_id) {
 			}
 		}
 		else
-			logger('tag_deliver: tag permission denied for ' . $u[0]['channel_address']);
+			logger('Tag permission denied for ' . $u[0]['channel_address']);
 	}
 
 	/*
@@ -2463,7 +2568,7 @@ function tag_deliver($uid, $item_id) {
 	$terms = array_merge(get_terms_oftype($item['term'],TERM_MENTION),get_terms_oftype($item['term'],TERM_FORUM));
 
 	if($terms)
-		logger('tag_deliver: post mentions: ' . print_r($terms,true), LOGGER_DATA);
+		logger('Post mentions: ' . print_r($terms,true), LOGGER_DATA);
 
 	$link = normalise_link($u[0]['xchan_url']);
 
@@ -2477,7 +2582,7 @@ function tag_deliver($uid, $item_id) {
 	}
 
 	if($mention) {
-		logger('tag_deliver: mention found for ' . $u[0]['channel_name']);
+		logger('Mention found for ' . $u[0]['channel_name']);
 
 		$r = q("update item set item_mentionsme = 1 where id = %d",
 			intval($item_id)
@@ -2543,12 +2648,23 @@ function tag_deliver($uid, $item_id) {
 		}
 
 		if(! ($tagged || $plustagged)) {
-			logger('tag_deliver: mention was in a reshare or exceeded max_tagged_forums - ignoring');
+			logger('Mention was in a reshare or exceeded max_tagged_forums - ignoring');
 			return;
 		}
 
-		$arr = array('channel_id' => $uid, 'item' => $item, 'body' => $body);
-		call_hooks('tagged',$arr);
+		$arr = [
+				'channel_id' => $uid,
+				'item' => $item,
+				'body' => $body
+		];
+		/**
+		 * @hooks tagged
+		 *   Called when a delivery is processed which results in you being tagged.
+		 *   * \e number \b channel_id
+		 *   * \e array \b item
+		 *   * \e string \b body
+		 */
+		call_hooks('tagged', $arr);
 
 		/*
 		 * Kill two birds with one stone. As long as we're here, send a mention notification.
@@ -2567,7 +2683,7 @@ function tag_deliver($uid, $item_id) {
 		// Just a normal tag?
 
 		if(! $plustagged) {
-			logger('tag_deliver: not a plus tag', LOGGER_DEBUG);
+			logger('Not a plus tag', LOGGER_DEBUG);
 			return;
 		}
 
@@ -2580,7 +2696,7 @@ function tag_deliver($uid, $item_id) {
 	}
 
 	if((! $mention) && (! $union)) {
-		logger('tag_deliver: no mention for ' . $u[0]['channel_name'] . ' and no union.');
+		logger('No mention for ' . $u[0]['channel_name'] . ' and no union.');
 		return;
 	}
 
@@ -2590,11 +2706,11 @@ function tag_deliver($uid, $item_id) {
 
 
 	if(intval($item['item_wall']) || intval($item['item_origin']) || (! intval($item['item_thread_top'])) || ($item['id'] != $item['parent'])) {
-		logger('tag_deliver: item was local or a comment. rejected.');
+		logger('Item was local or a comment. rejected.');
 		return;
 	}
 
-	logger('tag_deliver: creating second delivery chain.');
+	logger('Creating second delivery chain.');
 	start_delivery_chain($u[0],$item,$item_id,null);
 }
 
@@ -2605,8 +2721,12 @@ function tag_deliver($uid, $item_id) {
  * 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.
+ *
+ * @param number $uid A chnnel_id
+ * @param array $item
+ * @return boolean
  */
-function tgroup_check($uid,$item) {
+function tgroup_check($uid, $item) {
 
 	$mention = false;
 
@@ -2731,8 +2851,8 @@ function start_delivery_chain($channel, $item, $item_id, $parent) {
 	if($sourced) {
 		$r = q("select * from source where src_channel_id = %d and ( src_xchan = '%s' or src_xchan = '*' ) limit 1",
 			intval($channel['channel_id']),
-	        dbesc(($item['source_xchan']) ?  $item['source_xchan'] : $item['owner_xchan'])
-    	);
+			dbesc(($item['source_xchan']) ?  $item['source_xchan'] : $item['owner_xchan'])
+		);
 		if($r) {
 			$t = trim($r[0]['src_tag']);
 			if($t) {
@@ -2741,15 +2861,15 @@ function start_delivery_chain($channel, $item, $item_id, $parent) {
 					foreach($tags as $tt) {
 						$tt = trim($tt);
 						if($tt) {
-            				q("insert into term (uid,oid,otype,ttype,term,url)
-                				values(%d,%d,%d,%d,'%s','%s') ",
-                				intval($channel['channel_id']),
-				                intval($item_id),
-                				intval(TERM_OBJ_POST),
-				                intval(TERM_CATEGORY),
-                				dbesc($tt),
+							q("insert into term (uid,oid,otype,ttype,term,url)
+								values(%d,%d,%d,%d,'%s','%s') ",
+								intval($channel['channel_id']),
+								intval($item_id),
+								intval(TERM_OBJ_POST),
+								intval(TERM_CATEGORY),
+								dbesc($tt),
 								dbesc(z_root() . '/channel/' . $channel['channel_address'] . '?f=&cat=' . urlencode($tt))
-            				);
+							);
 						}
 					}
 				}
@@ -3014,7 +3134,6 @@ function mail_store($arr) {
 	$arr['mail_flags']    = ((x($arr,'mail_flags'))    ? intval($arr['mail_flags'])          : 0 );
 	$arr['mail_raw']      = ((x($arr,'mail_raw'))      ? intval($arr['mail_raw'])            : 0 );
 
-	
 
 	if($arr['parent_mid']) {
 		$parent_item = q("select * from mail where mid = '%s' and channel_id = %d limit 1",
@@ -3022,7 +3141,7 @@ function mail_store($arr) {
 			intval($arr['channel_id'])
 		);
 		if(($parent_item) && (! $arr['conv_guid'])) {
-			$arr['conv_guid'] = $parent_item[0]['conv_guid']; 
+			$arr['conv_guid'] = $parent_item[0]['conv_guid'];
 		}
 	}
 	else {
@@ -3048,19 +3167,23 @@ function mail_store($arr) {
 	);
 
 	if($r) {
-		logger('mail_store: duplicate item ignored. ' . print_r($arr,true));
+		logger('Duplicate item ignored. ' . print_r($arr,true));
 		return 0;
 	}
 
 	if(! $r && $arr['mail_recalled'] == 1) {
-		logger('mail_store: recalled item not found. ' . print_r($arr,true));
+		logger('Recalled item not found. ' . print_r($arr,true));
 		return 0;
 	}
 
-	call_hooks('post_mail',$arr);
+	/**
+	 * @hooks post_mail
+	 *   Called when a mail message has been composed.
+	 */
+	call_hooks('post_mail', $arr);
 
 	if(x($arr,'cancel')) {
-		logger('mail_store: post cancelled by plugin.');
+		logger('Post cancelled by plugin.');
 		return 0;
 	}
 
@@ -3077,15 +3200,15 @@ function mail_store($arr) {
 
 	if($r) {
 		$current_post = $r[0]['id'];
-		logger('mail_store: created item ' . $current_post, LOGGER_DEBUG);
+		logger('Created item ' . $current_post, LOGGER_DEBUG);
 		$arr['id'] = $current_post; // for notification
 	}
 	else {
-		logger('mail_store: could not locate created item');
+		logger('Could not locate created item');
 		return 0;
 	}
 	if(count($r) > 1) {
-		logger('mail_store: duplicated post occurred. Removing duplicates.');
+		logger('Duplicated post occurred. Removing duplicates.');
 		q("DELETE FROM mail WHERE mid = '%s' AND channel_id = %d AND id != %d ",
 			$arr['mid'],
 			intval($arr['channel_id']),
@@ -3114,7 +3237,11 @@ function mail_store($arr) {
 		);
 	}
 
-	call_hooks('post_mail_end',$arr);
+	/**
+	 * @hooks post_mail_end
+	 *   Called when a mail message has been delivered.
+	 */
+	call_hooks('post_mail_end', $arr);
 	return $current_post;
 }
 
@@ -3135,7 +3262,7 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 		$img_st_close++; // make it point to AFTER the closing bracket
 		$image = substr($orig_body, $img_start + $img_st_close, $img_len);
 
-		logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
+		logger('Found photo ' . $image, LOGGER_DEBUG);
 
 		if(stristr($image , $site . '/photo/')) {
 			// Only embed locally hosted photos
@@ -3179,7 +3306,7 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 
 						// If a custom width and height were specified, apply before embedding
 						if(preg_match("/\[zmg\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
-							logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
+							logger('Scaling photo', LOGGER_DEBUG);
 
 							$width = intval($match[1]);
 							$height = intval($match[2]);
@@ -3192,9 +3319,9 @@ function fix_private_photos($s, $uid, $item = null, $cid = 0) {
 							}
 						}
 
-						logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
+						logger('Replacing photo', LOGGER_DEBUG);
 						$image = 'data:' . $type . ';base64,' . base64_encode($data);
-						logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
+						logger('Replaced: ' . $image, LOGGER_DATA);
 					}
 				}
 			}
@@ -3451,8 +3578,16 @@ function drop_item($id,$interactive = true,$stage = DROPITEM_NORMAL,$force = fal
 			);
 		}
 
-		$arr = array('item' => $item, 'interactive' => $interactive, 'stage' => $stage);
-		call_hooks('drop_item', $arr );
+		$arr = [
+				'item' => $item,
+				'interactive' => $interactive,
+				'stage' => $stage
+		];
+		/**
+		 * @hooks drop_item
+		 *   Called when an 'item' is removed.
+		 */
+		call_hooks('drop_item', $arr);
 
 		$notify_id = intval($item['id']);
 
@@ -3602,8 +3737,14 @@ function delete_item_lowlevel($item, $stage = DROPITEM_NORMAL, $force = false) {
 	return true;
 }
 
-
-function first_post_date($uid,$wall = false) {
+/**
+ * @brief Return the first post date.
+ *
+ * @param int $uid
+ * @param boolean $wall (optional) default false
+ * @return string|boolean date string, otherwise false
+ */
+function first_post_date($uid, $wall = false) {
 
 	$wall_sql = (($wall) ? " and item_wall = 1 " : "" );
 	$item_normal = item_normal();
@@ -3612,7 +3753,6 @@ function first_post_date($uid,$wall = false) {
 		where uid = %d and id = parent $item_normal $wall_sql
 		order by created asc limit 1",
 		intval($uid)
-
 	);
 	if($r) {
 //		logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
@@ -3628,8 +3768,8 @@ function first_post_date($uid,$wall = false) {
  * current flat list of all representative dates.
  *
  * @param int $uid
- * @param unknown $wall
- * @param unknown $mindate
+ * @param boolean $wall
+ * @param string $mindate
  * @return array
  */
 function list_post_dates($uid, $wall, $mindate) {
@@ -3700,8 +3840,14 @@ function posted_dates($uid,$wall) {
 	return $ret;
 }
 
-
-function fetch_post_tags($items,$link = false) {
+/**
+ * @brief Extend an item array with the associated tags of the posts.
+ *
+ * @param array $items
+ * @param boolean $link (optional) default false
+ * @return array Return the provided $items array after extended the posts with tags
+ */
+function fetch_post_tags($items, $link = false) {
 
 	$tag_finder = array();
 	if($items) {
@@ -3720,7 +3866,6 @@ function fetch_post_tags($items,$link = false) {
 	}
 	$tag_finder_str = implode(', ', $tag_finder);
 
-
 	if(strlen($tag_finder_str)) {
 		$tags = q("select * from term where oid in ( %s ) and otype = %d",
 			dbesc($tag_finder_str),
@@ -3729,7 +3874,6 @@ function fetch_post_tags($items,$link = false) {
 		$imeta = q("select * from iconfig where iid in ( %s )",
 			dbesc($tag_finder_str)
 		);
-
 	}
 
 	for($x = 0; $x < count($items); $x ++) {
@@ -3779,8 +3923,15 @@ function fetch_post_tags($items,$link = false) {
 }
 
 
-
-function zot_feed($uid,$observer_hash,$arr) {
+/**
+ * @brief
+ *
+ * @param int $uid
+ * @param string $observer_hash
+ * @param array $arr
+ * @return array
+ */
+function zot_feed($uid, $observer_hash, $arr) {
 
 	$result = array();
 	$mindate = null;
@@ -3990,24 +4141,23 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 	}
 
 	if($arr['search']) {
+		if(strpos($arr['search'],'#') === 0)
+			$sql_extra .= term_query('item',substr($arr['search'],1),TERM_HASHTAG,TERM_COMMUNITYTAG);
+		else
+			$sql_extra .= sprintf(" AND item.body like '%s' ",
+				dbesc(protect_sprintf('%' . $arr['search'] . '%'))
+			);
+	}
 
-        if(strpos($arr['search'],'#') === 0)
-            $sql_extra .= term_query('item',substr($arr['search'],1),TERM_HASHTAG,TERM_COMMUNITYTAG);
-        else
-            $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(strlen($arr['file'])) {
+		$sql_extra .= term_query('item',$arr['files'],TERM_FILE);
+	}
 
-    if($arr['conv'] && $channel) {
-        $sql_extra .= sprintf(" AND parent IN (SELECT distinct parent from item where ( author_xchan like '%s' or item_mentionsme = 1 )) ",
-            dbesc(protect_sprintf($uidhash))
-        );
-    }
+	if($arr['conv'] && $channel) {
+		$sql_extra .= sprintf(" AND parent IN (SELECT distinct parent from item where ( author_xchan like '%s' or item_mentionsme = 1 )) ",
+			dbesc(protect_sprintf($uidhash))
+		);
+	}
 
 	if (($client_mode & CLIENT_MODE_UPDATE) && (! ($client_mode & CLIENT_MODE_LOAD))) {
 		// only setup pagination on initial page view
@@ -4042,9 +4192,9 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 		}
 	}
 
-    $simple_update = (($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();
 
@@ -4087,27 +4237,26 @@ function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = C
 
 		if(($client_mode & CLIENT_MODE_LOAD) || ($client_mode == CLIENT_MODE_NORMAL)) {
 
-            // Fetch a page full of parent items for this page
-
-            $r = q("SELECT distinct item.id AS item_id, item.$ordering FROM item
-                left join abook on item.author_xchan = abook.abook_xchan
-                WHERE $item_uids $item_restrict
-                AND item.parent = item.id
-                and (abook.abook_blocked = 0 or abook.abook_flags is null)
-                $sql_extra3 $sql_extra $sql_nets
-                ORDER BY item.$ordering DESC $pager_sql "
-            );
-
-        }
-        else {
-            // update
-            $r = q("SELECT item.parent AS item_id FROM item
-                left join abook on item.author_xchan = abook.abook_xchan
-                WHERE $item_uids $item_restrict $simple_update
-                and (abook.abook_blocked = 0 or abook.abook_flags is null)
-                $sql_extra3 $sql_extra $sql_nets "
-            );
-        }
+			// Fetch a page full of parent items for this page
+
+			$r = q("SELECT distinct item.id AS item_id, item.$ordering FROM item
+				left join abook on item.author_xchan = abook.abook_xchan
+				WHERE $item_uids $item_restrict
+				AND item.parent = item.id
+				and (abook.abook_blocked = 0 or abook.abook_flags is null)
+				$sql_extra3 $sql_extra $sql_nets
+				ORDER BY item.$ordering DESC $pager_sql "
+			);
+		}
+		else {
+			// update
+			$r = q("SELECT item.parent AS item_id FROM item
+				left join abook on item.author_xchan = abook.abook_xchan
+				WHERE $item_uids $item_restrict $simple_update
+				and (abook.abook_blocked = 0 or abook.abook_flags is null)
+				$sql_extra3 $sql_extra $sql_nets "
+			);
+		}
 
 		//$first = dba_timer();
 
@@ -4167,12 +4316,11 @@ function webpage_to_namespace($webpage) {
 		$page_type = 'docfile';
 	else
 		$page_type = 'unknown';
-	return $page_type;
 
+	return $page_type;
 }
 
 
-
 function update_remote_id($channel,$post_id,$webpage,$pagetitle,$namespace,$remote_id,$mid) {
 
 	if(! $post_id)
@@ -4296,7 +4444,6 @@ function comment_local_origin($item) {
 
 
 
-
 function send_profile_photo_activity($channel,$photo,$profile) {
 
 	// for now only create activities for the default profile
@@ -4345,8 +4492,6 @@ function send_profile_photo_activity($channel,$photo,$profile) {
 	$arr['author_xchan'] = $channel['channel_hash'];
 
 	post_activity_item($arr);
-
-
 }
 
 
@@ -4549,7 +4694,6 @@ function item_create_edit_activity($post) {
 	));
 
 
-
 	$x = post_activity_item($new_item);
 
 	$post_id = $x['id'];
@@ -4565,5 +4709,4 @@ function item_create_edit_activity($post) {
 	}
 
 	\Zotlabs\Daemon\Master::Summon(array('Notifier', 'edit_activity', $post_id));
-
 }
diff --git a/include/markdown.php b/include/markdown.php
index 0464cf71a..865727b20 100644
--- a/include/markdown.php
+++ b/include/markdown.php
@@ -14,27 +14,25 @@ require_once("include/bbcode.php");
 
 
 /**
- * @brief
+ * @brief Convert Markdown to bbcode.
  *
  * We don't want to support a bbcode specific markdown interpreter
  * and the markdown library we have is pretty good, but provides HTML output.
  * So we'll use that to convert to HTML, then convert the HTML back to bbcode,
  * and then clean up a few Diaspora specific constructs.
  *
- * @param string $s
+ * @param string $s The message as Markdown
  * @param boolean $use_zrl default false
- * @return string
+ * @param array $options default empty
+ * @return string The message converted to bbcode
  */
-
 function markdown_to_bb($s, $use_zrl = false, $options = []) {
 
-
 	if(is_array($s)) {
-		btlogger('markdown_to_bb called with array. ' . print_r($s,true), LOGGER_NORMAL, LOG_WARNING);
+		btlogger('markdown_to_bb called with array. ' . print_r($s, true), LOGGER_NORMAL, LOG_WARNING);
 		return '';
 	}
 
-
 	$s = str_replace("&#xD;","\r",$s);
 	$s = str_replace("&#xD;\n&gt;","",$s);
 
@@ -43,9 +41,18 @@ function markdown_to_bb($s, $use_zrl = false, $options = []) {
 	// if empty link text replace with the url
 	$s = preg_replace("/\[\]\((.*?)\)/ism",'[$1]($1)',$s);
 
-	$x = [ 'text' => $s , 'zrl' => $use_zrl, 'options' => $options ];	
-
-	call_hooks('markdown_to_bb_init',$x);
+	$x = [
+			'text' => $s,
+			'zrl' => $use_zrl,
+			'options' => $options
+	];
+	/**
+	 * @hooks markdown_to_bb_init
+	 *   * \e string \b text - The message as Markdown and what will get returned
+	 *   * \e boolean \b zrl
+	 *   * \e array \b options
+	 */
+	call_hooks('markdown_to_bb_init', $x);
 
 	$s = $x['text'];
 
@@ -67,7 +74,7 @@ function markdown_to_bb($s, $use_zrl = false, $options = []) {
 
 	// Convert everything that looks like a link to a link
 	if($use_zrl) {
-		$s = str_replace(array('[img','/img]'),array('[zmg','/zmg]'),$s);
+		$s = str_replace(['[img', '/img]'], ['[zmg', '/zmg]'], $s);
 		$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,\@\(\)]+)/ism", '$1[zrl=$2$3]$2$3[/zrl]',$s);
 	}
 	else {
@@ -80,13 +87,22 @@ function markdown_to_bb($s, $use_zrl = false, $options = []) {
 	// Don't show link to full picture (until it is fixed)
 	$s = scale_external_images($s, false);
 
-	call_hooks('markdown_to_bb',$s);
+	/**
+	 * @hooks markdown_to_bb
+	 *   * \e string - The already converted message as bbcode
+	 */
+	call_hooks('markdown_to_bb', $s);
 
 	return $s;
 }
 
 
-
+/**
+ * @brief
+ *
+ * @param array $match
+ * @return string
+ */
 function bb_to_markdown_share($match) {
 
 	$matches = array();
@@ -153,17 +169,22 @@ function bb_to_markdown_share($match) {
 }
 
 
-
+/**
+ * @brief Convert bbcode to Markdown.
+ *
+ * @param string $Text The message as bbcode
+ * @param array $options default empty
+ * @return string The message converted to Markdown
+ */
 function bb_to_markdown($Text, $options = []) {
 
 	/*
 	 * Transform #tags, strip off the [url] and replace spaces with underscore
 	 */
 
-	$Text = preg_replace_callback('/#\[([zu])rl\=(.*?)\](.*?)\[\/[(zu)]rl\]/i', 
+	$Text = preg_replace_callback('/#\[([zu])rl\=(.*?)\](.*?)\[\/[(zu)]rl\]/i',
 		create_function('$match', 'return \'#\'. str_replace(\' \', \'_\', $match[3]);'), $Text);
 
-
 	$Text = preg_replace('/#\^\[([zu])rl\=(.*?)\](.*?)\[\/([zu])rl\]/i', '[$1rl=$2]$3[/$4rl]', $Text);
 
 	// Converting images with size parameters to simple images. Markdown doesn't know it.
@@ -173,7 +194,12 @@ function bb_to_markdown($Text, $options = []) {
 
 	$x = [ 'bbcode' => $Text, 'options' => $options ];
 
-	call_hooks('bb_to_markdown_bb',$x);
+	/**
+	 * @hooks bb_to_markdown_bb
+	 *   * \e string \b bbcode - The message as bbcode and what will get returned
+	 *   * \e array \b options
+	 */
+	call_hooks('bb_to_markdown_bb', $x);
 
 	$Text = $x['bbcode'];
 
@@ -202,14 +228,16 @@ function bb_to_markdown($Text, $options = []) {
 
 	$Text = trim($Text);
 
+	/**
+	 * @hooks bb_to_markdown
+	 *   * \e string - The already converted message as bbcode and what will get returned
+	 */
 	call_hooks('bb_to_markdown', $Text);
 
 	return $Text;
-
 }
 
 
-
 /**
  * @brief Convert a HTML text into Markdown.
  *
@@ -217,8 +245,6 @@ function bb_to_markdown($Text, $options = []) {
  *
  * If the HTML text can not get parsed it will return an empty string.
  *
- * @see HTMLToMarkdown
- *
  * @param string $html The HTML code to convert
  * @return string Markdown representation of the given HTML text, empty on error
  */
@@ -232,8 +258,5 @@ function html2markdown($html) {
 		logger("Invalid HTML. HTMLToMarkdown library threw an exception.");
 	}
 
-	// The old html 2 markdown library "pixel418/markdownify": "^2.2",
-	//$md = new HtmlConverter();
-	//$markdown = $md->convert($Text);
 	return $markdown;
 }
diff --git a/include/network.php b/include/network.php
index 2caf29ab5..3569874be 100644
--- a/include/network.php
+++ b/include/network.php
@@ -1,6 +1,7 @@
 <?php
 /**
  * @file include/network.php
+ * @brief Network related functions.
  */
 
 /**
@@ -189,7 +190,7 @@ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) {
 
 
 /**
- * @brief
+ * @brief Does a curl post request.
  *
  * @param string $url
  *    URL to post
@@ -214,7 +215,7 @@ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) {
  *  * \e string \b body => content
  *  * \e string \b debug => from curl_info()
  */
-function z_post_url($url,$params, $redirects = 0, $opts = array()) {
+function z_post_url($url, $params, $redirects = 0, $opts = array()) {
 
 //	logger('url: ' . $url);
 //	logger('params: ' . print_r($params,true));
@@ -276,13 +277,10 @@ function z_post_url($url,$params, $redirects = 0, $opts = array()) {
 		@curl_setopt($ch, CURLOPT_USERPWD, $opts['http_auth']);
 	}
 
-
 	if(x($opts,'cookiejar'))
 		@curl_setopt($ch, CURLOPT_COOKIEJAR, $opts['cookiejar']);
 	if(x($opts,'cookiefile'))
 		@curl_setopt($ch, CURLOPT_COOKIEFILE, $opts['cookiefile']);
-
-
 	if(x($opts,'cookie'))
 		@curl_setopt($ch, CURLOPT_COOKIE, $opts['cookie']);
 
@@ -423,7 +421,7 @@ function http_status($val, $msg = '') {
  *    integer HTTP status result value
  * @param string $msg
  *    optional message
- * @return does not return, process is terminated
+ * @return void does not return, process is terminated
  */
 function http_status_exit($val, $msg = '') {
 	http_status($val, $msg);
@@ -431,10 +429,10 @@ function http_status_exit($val, $msg = '') {
 }
 
 /**
- * @brief convert an XML document to a normalised, case-corrected array used by webfinger.
+ * @brief Convert an XML document to a normalised, case-corrected array used by webfinger.
  *
  * @param string|array|SimpleXMLElement $xml_element
- * @param int $recursion_depth[in,out]
+ * @param[in,out] int $recursion_depth
  * @return NULL|string|array
  */
 function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
@@ -501,14 +499,14 @@ function z_dns_check($h,$check_mx = 0) {
 }
 
 /**
- * @brief Validates a given URL
+ * @brief Validates a given URL.
  *
  * Take a URL from the wild, prepend http:// if necessary and check DNS to see
  * if it's real (or check if is a valid IP address).
  *
  * @see z_dns_check()
  *
- * @param string $url[in,out] URL to check
+ * @param[in,out] string $url URL to check
  * @return boolean Return true if it's OK, false if something is wrong with it
  */
 function validate_url(&$url) {
@@ -593,6 +591,7 @@ function allowed_url($url) {
 			}
 		}
 	}
+
 	return $found;
 }
 
@@ -658,7 +657,7 @@ function allowed_email($email) {
 
 
 
-function parse_xml_string($s,$strict = true) {
+function parse_xml_string($s, $strict = true) {
 	if($strict) {
 		if(! strstr($s,'<?xml'))
 			return false;
@@ -683,14 +682,21 @@ function parse_xml_string($s,$strict = true) {
 	return $x;
 }
 
-
+/**
+ * @brief Scales an external image.
+ *
+ * @param string $s
+ * @param string $include_link default true
+ * @param string $scale_replace default false
+ * @return string
+ */
 function scale_external_images($s, $include_link = true, $scale_replace = false) {
 
 	// Picture addresses can contain special characters
 	$s = htmlspecialchars_decode($s, ENT_COMPAT);
 
 	$matches = null;
-	$c = preg_match_all('/\[([zi])mg(.*?)\](.*?)\[\/[zi]mg\]/ism',$s,$matches,PREG_SET_ORDER);
+	$c = preg_match_all('/\[([zi])mg(.*?)\](.*?)\[\/[zi]mg\]/ism', $s, $matches, PREG_SET_ORDER);
 	if($c) {
 		require_once('include/photo/photo_driver.php');
 
@@ -717,22 +723,21 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 			else
 				$scaled = $mtch[3];
 
-			if(! strpbrk(substr($scaled,0,1),'zhfmt'))
+			if(! strpbrk(substr($scaled, 0, 1), 'zhfmt'))
 				continue;
 
-			$i = z_fetch_url($scaled,true);
-
+			$i = z_fetch_url($scaled, true);
 
-			$cache = get_config('system','itemcache');
+			$cache = get_config('system', 'itemcache');
 			if (($cache != '') and is_dir($cache)) {
-				$cachefile = $cache."/".hash("md5", $scaled);
+				$cachefile = $cache . '/' . hash('md5', $scaled);
 				file_put_contents($cachefile, $i['body']);
 			}
 
 			// guess mimetype from headers or filename
 
-			$type = guess_image_type($mtch[3],$i['header']);
-			if(strpos($type,'image') === false)
+			$type = guess_image_type($mtch[3], $i['header']);
+			if(strpos($type, 'image') === false)
 				continue;
 
 			if($i['success']) {
@@ -764,7 +769,7 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 
 	// replace the special char encoding
 
-	$s = htmlspecialchars($s,ENT_COMPAT,'UTF-8');
+	$s = htmlspecialchars($s, ENT_COMPAT, 'UTF-8');
 
 	return $s;
 }
@@ -1141,7 +1146,14 @@ function discover_by_url($url, $arr = null) {
 	return true;
 }
 
-function discover_by_webbie($webbie,$protocol = '') {
+/**
+ * @brief
+ *
+ * @param string $webbie
+ * @param string $protocol (optional) default empty
+ * @return boolean
+ */
+function discover_by_webbie($webbie, $protocol = '') {
 
 	$result   = [];
 
@@ -1149,7 +1161,7 @@ function discover_by_webbie($webbie,$protocol = '') {
 
 //	$webbie = strtolower($webbie);
 
-	$x = webfinger_rfc7033($webbie,true);
+	$x = webfinger_rfc7033($webbie, true);
 	if($x && array_key_exists('links',$x) && $x['links']) {
 		foreach($x['links'] as $link) {
 			if(array_key_exists('rel',$link)) {
@@ -1158,7 +1170,7 @@ function discover_by_webbie($webbie,$protocol = '') {
 				// here.
 
 				if($link['rel'] === PROTOCOL_ZOT && ((! $protocol) || (strtolower($protocol) === 'zot'))) {
-					logger('discover_by_webbie: zot found for ' . $webbie, LOGGER_DEBUG);
+					logger('zot found for ' . $webbie, LOGGER_DEBUG);
 					if(array_key_exists('zot',$x) && $x['zot']['success']) {
 						$i = import_xchan($x['zot']);
 						return true;
@@ -1178,16 +1190,35 @@ function discover_by_webbie($webbie,$protocol = '') {
 
 	logger('webfinger: ' . print_r($x,true), LOGGER_DATA, LOG_INFO);
 
-	$arr = array('address' => $webbie, 'protocol' => $protocol, 'success' => false, 'webfinger' => $x);
+	$arr = [
+			'address' => $webbie,
+			'protocol' => $protocol,
+			'success' => false,
+			'webfinger' => $x
+	];
+	/**
+	 * @hooks discover_channel_webfinger
+	 *   Called when performing a webfinger lookup.
+	 *   * \e string \b address - The webbie
+	 *   * \e string \b protocol
+	 *   * \e array \b webfinger - The result from webfinger_rfc7033()
+	 *   * \e boolean \b success - The return value, default false
+	 */
 	call_hooks('discover_channel_webfinger', $arr);
 	if($arr['success'])
 		return true;
 
 	return false;
-
 }
 
-function webfinger_rfc7033($webbie,$zot = false) {
+/**
+ * @brief Fetch and return a webfinger for a webbie.
+ *
+ * @param string $webbie - The webbie
+ * @param boolean $zot (optional) default false
+ * @return boolean|string false or associative array from result JSON
+ */
+function webfinger_rfc7033($webbie, $zot = false) {
 
 	if(strpos($webbie,'@')) {
 		$lhs = substr($webbie,0,strpos($webbie,'@'));
@@ -1199,6 +1230,7 @@ function webfinger_rfc7033($webbie,$zot = false) {
 		if($m) {
 			if($m['scheme'] !== 'https')
 				return false;
+
 			$rhs = $m['host'] . (($m['port']) ? ':' . $m['port'] : '');
 			$resource = urlencode($webbie);
 		}
@@ -1211,20 +1243,19 @@ function webfinger_rfc7033($webbie,$zot = false) {
 	// and results in a 406 (Not Acceptable) response, and will also incorrectly produce an XML
 	// document if you use 'application/jrd+json, */*'. We could set this to application/jrd+json,
 	// but some test webfinger servers may not explicitly set the content type and they would be
-	// blocked. The best compromise until Mastodon is fixed is to remove the Accept header which is 
-	// accomplished by setting it to nothing. 
+	// blocked. The best compromise until Mastodon is fixed is to remove the Accept header which is
+	// accomplished by setting it to nothing.
 
 	$counter = 0;
-	$s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?f=&resource=' . $resource . (($zot) ? '&zot=1' : ''), 
+	$s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?f=&resource=' . $resource . (($zot) ? '&zot=1' : ''),
 		false, $counter, [ 'headers' => [ 'Accept:' ] ]);
 
 	if($s['success']) {
-		$j = json_decode($s['body'],true);
+		$j = json_decode($s['body'], true);
 		return($j);
 	}
 
 	return false;
-
 }
 
 function old_webfinger($webbie) {
@@ -1604,7 +1635,13 @@ function check_siteallowed($url) {
 	$retvalue = true;
 
 	$arr = array('url' => $url);
-	call_hooks('check_siteallowed',$arr);
+	/**
+	 * @hooks check_siteallowed
+	 *   Used to over-ride or bypass the site black/white block lists.
+	 *   * \e string \b url
+	 *   * \e boolean \b allowed - optional return value set in hook
+	 */
+	call_hooks('check_siteallowed', $arr);
 
 	if(array_key_exists('allowed',$arr))
 		return $arr['allowed'];
@@ -1643,7 +1680,13 @@ function check_channelallowed($hash) {
 	$retvalue = true;
 
 	$arr = array('hash' => $hash);
-	call_hooks('check_channelallowed',$arr);
+	/**
+	 * @hooks check_channelallowed
+	 *   Used to over-ride or bypass the channel black/white block lists.
+	 *   * \e string \b hash
+	 *   * \e boolean \b allowed - optional return value set in hook
+	 */
+	call_hooks('check_channelallowed', $arr);
 
 	if(array_key_exists('allowed',$arr))
 		return $arr['allowed'];
@@ -1732,6 +1775,10 @@ function network_to_name($s) {
 		NETWORK_MYSPACE     => t('MySpace'),
 	);
 
+	/**
+	 * @hooks network_to_name
+	 * @deprecated
+	 */
 	call_hooks('network_to_name', $nets);
 
 	$search  = array_keys($nets);
@@ -1743,7 +1790,7 @@ function network_to_name($s) {
 /**
  * @brief Send a text email message.
  *
- * @param array $params an assoziative array with:
+ * @param array $params an associative array with:
  *  * \e string \b fromName        name of the sender
  *  * \e string \b fromEmail       email of the sender
  *  * \e string \b replyTo         replyTo address to direct responses
@@ -1774,6 +1821,10 @@ function z_mail($params) {
 	$params['sent']   = false;
 	$params['result'] = false;
 
+	/**
+	 * @hooks email_send
+	 *   * \e params @see z_mail()
+	 */
 	call_hooks('email_send', $params);
 
 	if($params['sent']) {
@@ -1921,60 +1972,78 @@ function service_plink($contact, $guid) {
 	$plink = $url . '/channel/' . $handle . '?f=&mid=' . $guid;
 
 	$x = [ 'xchan' => $contact, 'guid' => $guid, 'url' => $url, 'plink' => $plink ];
+	/**
+	 * @hooks service_plink
+	 *   * \e array \b xchan
+	 *   * \e string \b guid
+	 *   * \e string \b url
+	 *   * \e string \b plink will get returned
+	 */
 	call_hooks('service_plink', $x);
 
 	return $x['plink'];
 }
 
+
+/**
+ * @brief
+ *
+ * @param array $mimeTypes
+ * @param string $acceptedTypes by default false will use $_SERVER['HTTP_ACCEPT']
+ * @return array|NULL
+ */
 function getBestSupportedMimeType($mimeTypes = null, $acceptedTypes = false) {
-    // Values will be stored in this array
+	// Values will be stored in this array
+	$AcceptTypes = [];
 
 	if($acceptedTypes === false)
 		$acceptedTypes = $_SERVER['HTTP_ACCEPT'];
 
-    $AcceptTypes = Array ();
-
-    // Accept header is case insensitive, and whitespace isn’t important
-    $accept = strtolower(str_replace(' ', '', $acceptedTypes));
-    // divide it into parts in the place of a ","
-    $accept = explode(',', $accept);
-    foreach ($accept as $a) {
-        // the default quality is 1.
-        $q = 1;
-        // check if there is a different quality
-        if (strpos($a, ';q=')) {
-            // divide "mime/type;q=X" into two parts: "mime/type" i "X"
-            list($a, $q) = explode(';q=', $a);
-        }
-        // mime-type $a is accepted with the quality $q
-        // WARNING: $q == 0 means, that mime-type isn’t supported!
-        $AcceptTypes[$a] = $q;
-    }
-    arsort($AcceptTypes);
-
-    // if no parameter was passed, just return parsed data
-    if (!$mimeTypes) return $AcceptTypes;
-
-    $mimeTypes = array_map('strtolower', (array)$mimeTypes);
-
-    // let’s check our supported types:
-    foreach ($AcceptTypes as $mime => $q) {
-       if ($q && in_array($mime, $mimeTypes)) return $mime;
-    }
-    // no mime-type found
-    return null;
-}
+	// Accept header is case insensitive, and whitespace isn’t important
+	$accept = strtolower(str_replace(' ', '', $acceptedTypes));
+	// divide it into parts in the place of a ","
+	$accept = explode(',', $accept);
+	foreach ($accept as $a) {
+		// the default quality is 1.
+		$q = 1;
+		// check if there is a different quality
+		if (strpos($a, ';q=')) {
+			// divide "mime/type;q=X" into two parts: "mime/type" i "X"
+			list($a, $q) = explode(';q=', $a);
+		}
+		// mime-type $a is accepted with the quality $q
+		// WARNING: $q == 0 means, that mime-type isn’t supported!
+		$AcceptTypes[$a] = $q;
+	}
+	arsort($AcceptTypes);
 
+	// if no parameter was passed, just return parsed data
+	if (!$mimeTypes) return $AcceptTypes;
 
-function jsonld_document_loader($url) {
+	$mimeTypes = array_map('strtolower', (array)$mimeTypes);
 
-	// perform caching for jsonld normaliser
+	// let’s check our supported types:
+	foreach ($AcceptTypes as $mime => $q) {
+		if ($q && in_array($mime, $mimeTypes)) return $mime;
+	}
+
+	// no mime-type found
+	return null;
+}
+
+/**
+ * @brief Perform caching for jsonld normaliser.
+ *
+ * @param string $url
+ * @return mixed|boolean|array
+ */
+function jsonld_document_loader($url) {
 
 	require_once('library/jsonld/jsonld.php');
 
 	$cachepath = 'store/[data]/ldcache';
 	if(! is_dir($cachepath))
-		os_mkdir($cachepath,STORAGE_DEFAULT_PERMISSIONS,true);
+		os_mkdir($cachepath, STORAGE_DEFAULT_PERMISSIONS, true);
 
 	$filename = $cachepath . '/' . urlencode($url);
 	if(file_exists($filename) && filemtime($filename) > time() - (12 * 60 * 60)) {
@@ -1983,7 +2052,7 @@ function jsonld_document_loader($url) {
 
 	$r = jsonld_default_document_loader($url);
 	if($r) {
-		file_put_contents($filename,json_encode($r));
+		file_put_contents($filename, json_encode($r));
 		return $r;
 	}
 
@@ -1993,5 +2062,4 @@ function jsonld_document_loader($url) {
 	}
 
 	return [];
-
 }
\ No newline at end of file
diff --git a/include/photos.php b/include/photos.php
index 5de68f162..508121950 100644
--- a/include/photos.php
+++ b/include/photos.php
@@ -10,14 +10,13 @@ require_once('include/photo/photo_driver.php');
 require_once('include/text.php');
 
 /**
- * @brief
+ * @brief Upload a photo.
  *
  * @param array $channel
  * @param array $observer
  * @param array $args
  * @return array
  */
-
 function photo_upload($channel, $observer, $args) {
 
 	$ret = array('success' => false);
@@ -115,25 +114,33 @@ function photo_upload($channel, $observer, $args) {
 		if (! $type)
 			$type=guess_image_type($filename);
 
-		logger('photo_upload: received file: ' . $filename . ' as ' . $src . ' ('. $type . ') ' . $filesize . ' bytes', LOGGER_DEBUG);
+		logger('Received file: ' . $filename . ' as ' . $src . ' ('. $type . ') ' . $filesize . ' bytes', LOGGER_DEBUG);
 
 		$maximagesize = get_config('system','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);
+			/**
+			 * @hooks photo_upload_end
+			 *   Called when a photo upload has been processed.
+			 */
+			call_hooks('photo_upload_end', $ret);
 			return $ret;
 		}
 
 		if (! $filesize) {
 			$ret['message'] = t('Image file is empty.');
 			@unlink($src);
-			call_hooks('photo_post_end',$ret);
+			/**
+			 * @hooks photo_post_end
+			 *   Called after uploading a photo.
+			 */
+			call_hooks('photo_post_end', $ret);
 			return $ret;
 		}
 
-		logger('photo_upload: loading the contents of ' . $src , LOGGER_DEBUG);
+		logger('Loading the contents of ' . $src , LOGGER_DEBUG);
 		$imagedata = @file_get_contents($src);
 	}
 
@@ -146,7 +153,11 @@ function photo_upload($channel, $observer, $args) {
 	if (($r) && ($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
 		$ret['message'] = upgrade_message();
 		@unlink($src);
-		call_hooks('photo_post_end',$ret);
+		/**
+		 * @hooks photo_post_end
+		 *   Called after uploading a photo.
+		 */
+		call_hooks('photo_post_end', $ret);
 		return $ret;
 	}
 
@@ -154,9 +165,13 @@ function photo_upload($channel, $observer, $args) {
 
 	if (! $ph->is_valid()) {
 		$ret['message'] = t('Unable to process image');
-		logger('photo_upload: unable to process image');
+		logger('unable to process image');
 		@unlink($src);
-		call_hooks('photo_upload_end',$ret);
+		/**
+		 * @hooks photo_upload_end
+		 *   Called when a photo upload has been processed.
+		 */
+		call_hooks('photo_upload_end', $ret);
 		return $ret;
 	}
 
@@ -266,8 +281,12 @@ function photo_upload($channel, $observer, $args) {
 			intval($channel_id)
 		);
 		$ret['message'] = t('Photo storage failed.');
-		logger('photo_upload: photo store failed.');
-		call_hooks('photo_upload_end',$ret);
+		logger('Photo store failed.');
+		/**
+		 * @hooks photo_upload_end
+		 *   Called when a photo upload has been processed.
+		 */
+		call_hooks('photo_upload_end', $ret);
 		return $ret;
 	}
 
@@ -293,8 +312,6 @@ function photo_upload($channel, $observer, $args) {
 		$width = $link[1]['width'];
 		$height = $link[1]['height'];
 		$tag = (($r1) ? '[zmg=' . $width . 'x' . $height . ']' : '[zmg]');
-
-
 	}
 	else {
 		$scale = 2;
@@ -352,7 +369,6 @@ function photo_upload($channel, $observer, $args) {
 				$item['target']	= json_encode($target);
 
 				$force = true;
-
 			}
 			$r = q("select id, edited from item where mid = '%s' and uid = %d limit 1",
 				dbesc($item['mid']),
@@ -420,7 +436,6 @@ function photo_upload($channel, $observer, $args) {
 			$arr['item_private'] = 1;
 
 
-
 		$result = item_store($arr,false,$deliver);
 		$item_id = $result['item_id'];
 
@@ -434,7 +449,11 @@ function photo_upload($channel, $observer, $args) {
 	$ret['resource_id'] = $photo_hash;
 	$ret['photoitem_id'] = $item_id;
 
-	call_hooks('photo_upload_end',$ret);
+	/**
+	 * @hooks photo_upload_end
+	 *   Called when a photo upload has been processed.
+	 */
+	call_hooks('photo_upload_end', $ret);
 
 	return $ret;
 }
@@ -499,10 +518,8 @@ function photo_calculate_1600_scale($arr) {
 	}
 
 	return $dest_width . 'x' . $dest_height;
-
 }
 
-
 /**
  * @brief Returns a list with all photo albums observer is allowed to see.
  *
@@ -517,7 +534,6 @@ function photo_calculate_1600_scale($arr) {
  *   * \e boolean \b success
  *   * \e array \b albums
  */
-
 function photos_albums_list($channel, $observer, $sort_key = 'display_path', $direction = 'asc') {
 
 	$channel_id     = $channel['channel_id'];
@@ -610,14 +626,13 @@ function photos_album_widget($channelx,$observer,$sortkey = 'display_path',$dire
 }
 
 /**
- * @brief
+ * @brief Return an array of photos.
  *
  * @param array $channel
  * @param array $observer
- * @param string $album default empty
+ * @param string $album (optional) default empty
  * @return boolean|array
  */
-
 function photos_list_photos($channel, $observer, $album = '') {
 
 	$channel_id     = $channel['channel_id'];
@@ -654,21 +669,20 @@ function photos_list_photos($channel, $observer, $album = '') {
  * @brief Check if given photo album exists in channel.
  *
  * @param int $channel_id id of the channel
+ * @param string $observer_hash
  * @param string $album name of the album
  * @return boolean
  */
-
-
 function photos_album_exists($channel_id, $observer_hash, $album) {
 
-	$sql_extra = permissions_sql($channel_id,$observer_hash);
+	$sql_extra = permissions_sql($channel_id, $observer_hash);
 
 	$r = q("SELECT folder, hash, is_dir, filename, os_path, display_path FROM attach WHERE hash = '%s' AND is_dir = 1 AND uid = %d $sql_extra limit 1",
 		dbesc($album),
 		intval($channel_id)
 	);
 
-	// partial backward compatibility with Hubzilla < 2.4 when we used the filename only 
+	// partial backward compatibility with Hubzilla < 2.4 when we used the filename only
 	// (ambiguous which would get chosen if you had two albums of the same name in different directories)
 	if(!$r && ctype_xdigit($album)) {
 		$r = q("SELECT folder, hash, is_dir, filename, os_path, display_path FROM attach WHERE filename = '%s' AND is_dir = 1 AND uid = %d $sql_extra limit 1",
@@ -690,7 +704,6 @@ function photos_album_exists($channel_id, $observer_hash, $album) {
  * @param string $newname The new name of the album
  * @return bool|array
  */
-
 function photos_album_rename($channel_id, $oldname, $newname) {
 	return q("UPDATE photo SET album = '%s' WHERE album = '%s' AND uid = %d",
 		dbesc($newname),
@@ -699,17 +712,14 @@ function photos_album_rename($channel_id, $oldname, $newname) {
 	);
 }
 
-
-
 /**
  * @brief
  *
  * @param int $channel_id
  * @param string $album
- * @param string $remote_xchan
+ * @param string $remote_xchan (optional) default empty
  * @return string|boolean
  */
-
 function photos_album_get_db_idstr($channel_id, $album, $remote_xchan = '') {
 
 	if($remote_xchan) {
@@ -743,15 +753,13 @@ function photos_album_get_db_idstr($channel_id, $album, $remote_xchan = '') {
  * @param array $channel
  * @param string $creator_hash
  * @param array $photo
- * @param boolean $visible default false
+ * @param boolean $visible (optional) default false
  * @return int item_id
  */
-
 function photos_create_item($channel, $creator_hash, $photo, $visible = false) {
 
 	// Create item container
 
-
 	$item_hidden = (($visible) ? 0 : 1 );
 
 	$mid = item_message_id();
@@ -791,36 +799,36 @@ function photos_create_item($channel, $creator_hash, $photo, $visible = false) {
 
 function getGps($exifCoord, $hemi) {
 
-    $degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
-    $minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
-    $seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
+	$degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
+	$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
+	$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
 
-    $flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
+	$flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
 
-    return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
+	return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
 }
 
 function getGpstimestamp($exifCoord) {
 
-    $hours   = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
-    $minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
-    $seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
+	$hours   = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
+	$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
+	$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
 
-	return sprintf('%02d:%02d:%02d',$hours,$minutes,$seconds);
+	return sprintf('%02d:%02d:%02d', $hours, $minutes, $seconds);
 }
 
 
 function gps2Num($coordPart) {
 
-    $parts = explode('/', $coordPart);
+	$parts = explode('/', $coordPart);
 
-    if (count($parts) <= 0)
-        return 0;
+	if (count($parts) <= 0)
+		return 0;
 
-    if (count($parts) == 1)
-        return $parts[0];
+	if (count($parts) == 1)
+		return $parts[0];
 
-    return floatval($parts[0]) / floatval($parts[1]);
+	return floatval($parts[0]) / floatval($parts[1]);
 }
 
 
@@ -832,7 +840,7 @@ function photo_profile_setperms($channel_id,$resource_id,$profile_id) {
 	$r = q("select profile_guid, is_default from profile where id = %d and uid = %d limit 1",
 		dbesc($profile_id),
 		intval($channel_id)
-	); 
+	);
 
 	if(! $r)
 		return;
@@ -841,26 +849,26 @@ function photo_profile_setperms($channel_id,$resource_id,$profile_id) {
 	$profile_guid = $r[0]['profile_guid'];
 
 	if($is_default) {
-		$r = q("update photo set allow_cid = '', allow_gid = '', deny_cid = '', deny_gid = '' 
+		$r = q("update photo set allow_cid = '', allow_gid = '', deny_cid = '', deny_gid = ''
 			where resource_id = '%s' and uid = %d",
 			dbesc($resource_id),
 			intval($channel_id)
 		);
-		$r = q("update attach set allow_cid = '', allow_gid = '', deny_cid = '', deny_gid = '' 
+		$r = q("update attach set allow_cid = '', allow_gid = '', deny_cid = '', deny_gid = ''
 			where hash = '%s' and uid = %d",
 			dbesc($resource_id),
 			intval($channel_id)
 		);
 	}
 	else {
-		$r = q("update photo set allow_cid = '', allow_gid = '%s', deny_cid = '', deny_gid = '' 
+		$r = q("update photo set allow_cid = '', allow_gid = '%s', deny_cid = '', deny_gid = ''
 			where resource_id = '%s' and uid = %d",
 			dbesc('<vp.' . $profile_guid . '>'),
 			dbesc($resource_id),
 			intval($channel_id)
 		);
 
-		$r = q("update attach set allow_cid = '', allow_gid = '%s', deny_cid = '', deny_gid = '' 
+		$r = q("update attach set allow_cid = '', allow_gid = '%s', deny_cid = '', deny_gid = ''
 			where hash = '%s' and uid = %d",
 			dbesc('<vp.' . $profile_guid . '>'),
 			dbesc($resource_id),
@@ -869,71 +877,72 @@ function photo_profile_setperms($channel_id,$resource_id,$profile_id) {
 	}
 }
 
+/**
+ * @brief
+ *
+ * @param int $uid
+ * @param int|string $profileid
+ */
 function profile_photo_set_profile_perms($uid, $profileid = 0) {
 
 	$allowcid = '';
 
-
 	if($profileid) {
+		$r = q("SELECT photo, profile_guid, id, is_default, uid
+			FROM profile WHERE uid = %d and ( profile.id = %d OR profile.profile_guid = '%s') LIMIT 1",
+			intval($uid),
+			intval($profileid),
+			dbesc($profileid)
+		);
+	}
+	else {
+		logger('Resetting permissions on default-profile-photo for user'.local_channel());
 
-			$r = q("SELECT photo, profile_guid, id, is_default, uid
-				FROM profile WHERE uid = %d and ( profile.id = %d OR profile.profile_guid = '%s') LIMIT 1",
-				intval($uid),
-				intval($profileid),
-				dbesc($profileid)
-			);
-		}
-		else {
-			logger('Resetting permissions on default-profile-photo for user'.local_channel());
+		$r = q("SELECT photo, profile_guid, id, is_default, uid  FROM profile
+			WHERE profile.uid = %d AND is_default = 1 LIMIT 1",
+			intval($uid)
+		); //If no profile is given, we update the default profile
+	}
+	if(! $r)
+		return;
 
-			$r = q("SELECT photo, profile_guid, id, is_default, uid  FROM profile
-				WHERE profile.uid = %d AND is_default = 1 LIMIT 1",
-				intval($uid)
-			); //If no profile is given, we update the default profile
-		}
-		if(! $r)
-			return;
-
-		$profile = $r[0];
-
-		if($profile['id'] && $profile['photo']) {
-	      	preg_match("@\w*(?=-\d*$)@i", $profile['photo'], $resource_id);
-	       	$resource_id = $resource_id[0];
-
-			if (! intval($profile['is_default'])) {
-				$r0 = q("SELECT channel_hash FROM channel WHERE channel_id = %d LIMIT 1",
-					intval($uid)
-				);
-				//Should not be needed in future. Catches old int-profile-ids.
-				$r1 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%d' ",
-					intval($profile['id'])
-				);
-				$r2 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%s'",
-					dbesc($profile['profile_guid'])
-				);
-				$allowcid = "<" . $r0[0]['channel_hash'] . ">";
-				foreach ($r1 as $entry) {
-					$allowcid .= "<" . $entry['abook_xchan'] . ">";
-				}
-				foreach ($r2 as $entry) {
-					$allowcid .= "<" . $entry['abook_xchan'] . ">";
-				}
+	$profile = $r[0];
 
-				q("UPDATE photo SET allow_cid = '%s' WHERE resource_id = '%s' AND uid = %d",
-					dbesc($allowcid),
-					dbesc($resource_id),
-					intval($uid)
-				);
+	if($profile['id'] && $profile['photo']) {
+		preg_match("@\w*(?=-\d*$)@i", $profile['photo'], $resource_id);
+		$resource_id = $resource_id[0];
 
+		if (! intval($profile['is_default'])) {
+			$r0 = q("SELECT channel_hash FROM channel WHERE channel_id = %d LIMIT 1",
+				intval($uid)
+			);
+			//Should not be needed in future. Catches old int-profile-ids.
+			$r1 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%d' ",
+				intval($profile['id'])
+			);
+			$r2 = q("SELECT abook.abook_xchan FROM abook WHERE abook_profile = '%s'",
+				dbesc($profile['profile_guid'])
+			);
+			$allowcid = "<" . $r0[0]['channel_hash'] . ">";
+			foreach ($r1 as $entry) {
+				$allowcid .= "<" . $entry['abook_xchan'] . ">";
 			}
-			else {
-				//Reset permissions on default profile picture to public
-				q("UPDATE photo SET allow_cid = '' WHERE photo_usage = %d AND uid = %d",
-					intval(PHOTO_PROFILE),
-					intval($uid)
-				);
+			foreach ($r2 as $entry) {
+				$allowcid .= "<" . $entry['abook_xchan'] . ">";
 			}
-		}
 
-		return;
+			q("UPDATE photo SET allow_cid = '%s' WHERE resource_id = '%s' AND uid = %d",
+				dbesc($allowcid),
+				dbesc($resource_id),
+				intval($uid)
+			);
+		}
+		else {
+			//Reset permissions on default profile picture to public
+			q("UPDATE photo SET allow_cid = '' WHERE photo_usage = %d AND uid = %d",
+				intval(PHOTO_PROFILE),
+				intval($uid)
+			);
+		}
 	}
+}
diff --git a/include/plugin.php b/include/plugin.php
index db20152ea..379d8e799 100755
--- a/include/plugin.php
+++ b/include/plugin.php
@@ -7,7 +7,7 @@
 
 
 /**
- * @brief unloads an addon.
+ * @brief Unloads an addon.
  *
  * @param string $plugin name of the addon
  */
@@ -22,7 +22,7 @@ function unload_plugin($plugin){
 }
 
 /**
- * @brief uninstalls an addon.
+ * @brief Uninstalls an addon.
  *
  * @param string $plugin name of the addon
  * @return boolean
@@ -110,6 +110,13 @@ function load_plugin($plugin) {
 	}
 }
 
+
+/**
+ * @brief Check if addon is installed.
+ *
+ * @param string $name
+ * @return boolean
+ */
 function plugin_is_installed($name) {
 	$r = q("select aname from addon where aname = '%s' and installed = 1 limit 1",
 		dbesc($name)
@@ -121,8 +128,9 @@ function plugin_is_installed($name) {
 }
 
 
-// reload all updated plugins
-
+/**
+ * @brief Reload all updated plugins.
+ */
 function reload_plugins() {
 	$plugins = get_config('system', 'addon');
 	if(strlen($plugins)) {
@@ -167,13 +175,18 @@ function reload_plugins() {
 	}
 }
 
+
+/**
+ * @brief Get a list of non hidden addons.
+ *
+ * @return array
+ */
 function visible_plugin_list() {
 	$r = q("select * from addon where hidden = 0 order by aname asc");
 	return(($r) ? ids_to_array($r,'aname') : array());
 }
 
 
-
 /**
  * @brief registers a hook.
  *
@@ -282,7 +295,7 @@ function insert_hook($hook, $fn, $version = 0, $priority = 0) {
  * the provided data.
  *
  * @param string $name of the hook to call
- * @param string|array &$data to transmit to the callback handler
+ * @param[in,out] string|array &$data to transmit to the callback handler
  */
 function call_hooks($name, &$data = null) {
 	$a = 0;
@@ -414,8 +427,8 @@ function check_plugin_versions($info) {
 			|| stristr($info['serverroles'],'any')
 			|| stristr($info['serverroles'],$role))) {
 			logger('serverrole limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
-			return false;
 
+			return false;
 		}
 	}
 
@@ -447,8 +460,6 @@ function check_plugin_versions($info) {
 }
 
 
-
-
 /**
  * @brief Parse theme comment in search of theme infos.
  *
@@ -532,7 +543,7 @@ function get_theme_info($theme){
  *
  * The screenshot is expected as view/theme/$theme/img/screenshot.[png|jpg].
  *
- * @param sring $theme The name of the theme
+ * @param string $theme The name of the theme
  * @return string
  */
 function get_theme_screenshot($theme) {
@@ -626,15 +637,16 @@ function format_css_if_exists($source) {
 	}
 }
 
-/*
+/**
  * This basically calculates the baseurl. We have other functions to do that, but
  * there was an issue with script paths and mixed-content whose details are arcane
  * and perhaps lost in the message archives. The short answer is that we're ignoring
  * the URL which we are "supposed" to use, and generating script paths relative to
  * the URL which we are currently using; in order to ensure they are found and aren't
  * blocked due to mixed content issues.
+ *
+ * @return string
  */
-
 function script_path() {
 	if(x($_SERVER,'HTTPS') && $_SERVER['HTTPS'])
 		$scheme = 'https';
@@ -659,6 +671,7 @@ function script_path() {
 	else {
 		return z_root();
 	}
+
 	return $scheme . '://' . $hostname;
 }
 
@@ -675,10 +688,13 @@ function head_remove_js($src, $priority = 0) {
 		unset(App::$js_sources[$priority][$index]);
 }
 
-// We should probably try to register main.js with a high priority, but currently we handle it
-// separately and put it at the end of the html head block in case any other javascript is
-// added outside the head_add_js construct.
-
+/**
+ * We should probably try to register main.js with a high priority, but currently
+ * we handle it separately and put it at the end of the html head block in case
+ * any other javascript is added outside the head_add_js construct.
+ *
+ * @return string
+ */
 function head_get_js() {
 
 	$str = '';
@@ -694,6 +710,7 @@ function head_get_js() {
 			}
 		}
 	}
+
 	return $str;
 }
 
@@ -703,6 +720,7 @@ function head_get_main_js() {
 	if(count($sources))
 		foreach($sources as $source)
 			$str .= format_js_if_exists($source,true);
+
 	return $str;
 }
 
@@ -716,7 +734,7 @@ function format_js_if_exists($source) {
 		if(substr($source,0,2) === '//') {
 			$path_prefix = '';
 		}
-	} 
+	}
 	else {
 		// It's a file from the theme
 		$path = '/' . theme_include($source);
@@ -781,12 +799,16 @@ function get_markup_template($s, $root = '') {
 	return $template;
 }
 
+/**
+ * @brief
+ *
+ * @param string $folder
+ * @return boolean|string
+ */
+function folder_exists($folder) {
+	// Get canonicalized absolute pathname
+	$path = realpath($folder);
 
-function folder_exists($folder)
-{
-    // Get canonicalized absolute pathname
-    $path = realpath($folder);
-
-    // If it exist, check if it's a directory
-    return (($path !== false) && is_dir($path)) ? $path : false;
+	// If it exist, check if it's a directory
+	return (($path !== false) && is_dir($path)) ? $path : false;
 }
diff --git a/include/zid.php b/include/zid.php
index ce9f70385..084188770 100644
--- a/include/zid.php
+++ b/include/zid.php
@@ -21,6 +21,7 @@ function is_matrix_url($url) {
 		}
 		$remembered[$m['host']] = false;
 	}
+
 	return false;
 }
 
@@ -32,14 +33,8 @@ function is_matrix_url($url) {
  * @param boolean $address
  *   $address to use instead of session environment
  * @return string
- *
- * @hooks 'zid'
- *      string url - url to accept zid
- *      string zid - urlencoded zid
- *      string result - the return string we calculated, change it if you want to return something else
  */
-
-function zid($s,$address = '') {
+function zid($s, $address = '') {
 	if (! strlen($s) || strpos($s,'zid='))
 		return $s;
 
@@ -74,7 +69,18 @@ function zid($s,$address = '') {
 	if($fragment)
 		$zurl .= '#' . $fragment;
 
-	$arr = array('url' => $s, 'zid' => urlencode($myaddr), 'result' => $zurl);
+	$arr = [
+			'url' => $s,
+			'zid' => urlencode($myaddr),
+			'result' => $zurl
+	];
+	/**
+	 * @hooks zid
+	 *   Called when adding the observer's zid to a URL.
+	 *   * \e string \b url - url to accept zid
+	 *   * \e string \b zid - urlencoded zid
+	 *   * \e string \b result - the return string we calculated, change it if you want to return something else
+	 */
 	call_hooks('zid', $arr);
 
 	return $arr['result'];
@@ -100,25 +106,26 @@ function strip_zats($s) {
  * 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.
+ * @TODO 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.
  *
  * @param array $match
  * @return string
  */
 function zidify_callback($match) {
-	$is_zid = ((feature_enabled(local_channel(),'sendzid')) || (strpos($match[1],'zrl')) ? true : false);
+	$is_zid = ((feature_enabled(local_channel(), 'sendzid')) || (strpos($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]);
+
+	$x = str_replace($match[0], $replace, $match[0]);
 
 	return $x;
 }
 
 function zidify_img_callback($match) {
-	$is_zid = ((feature_enabled(local_channel(),'sendzid')) || (strpos($match[1],'zrl')) ? true : false);
+	$is_zid = ((feature_enabled(local_channel(), 'sendzid')) || (strpos($match[1], 'zrl')) ? true : false);
 	$replace = '<img' . $match[1] . ' src="' . (($is_zid) ? zid($match[2]) : $match[2]) . '"';
 
-	$x = str_replace($match[0],$replace,$match[0]);
+	$x = str_replace($match[0], $replace, $match[0]);
 
 	return $x;
 }
@@ -132,12 +139,11 @@ function zidify_links($s) {
 }
 
 
-
-
 function zidify_text_callback($match) {
 	$is_zid = is_matrix_url($match[2]);
 	$replace = '<a' . $match[1] . ' href="' . (($is_zid) ? zid($match[2]) : $match[2]) . '"';
-	$x = str_replace($match[0],$replace,$match[0]);
+
+	$x = str_replace($match[0], $replace, $match[0]);
 
 	return $x;
 }
@@ -146,7 +152,7 @@ function zidify_text_img_callback($match) {
 	$is_zid = is_matrix_url($match[2]);
 	$replace = '<img' . $match[1] . ' src="' . (($is_zid) ? zid($match[2]) : $match[2]) . '"';
 
-	$x = str_replace($match[0],$replace,$match[0]);
+	$x = str_replace($match[0], $replace, $match[0]);
 
 	return $x;
 }
@@ -157,8 +163,6 @@ function zidify_text($s) {
 	$s = preg_replace_callback('/\<img(.*?)src\=\"(.*?)\"/ism','zidify_text_img_callback',$s);
 
 	return $s;
-
-
 }
 
 
@@ -198,7 +202,6 @@ function red_zrl_callback($matches) {
  * @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.
@@ -234,11 +237,17 @@ function red_zrlify_img_callback($matches) {
 	return $matches[0];
 }
 
+
+/**
+ * @brief OpenWebAuth authentication.
+ *
+ * @param string $token
+ */
 function owt_init($token) {
 
-	\Zotlabs\Zot\Verify::purge('owt','3 MINUTE');
+	\Zotlabs\Zot\Verify::purge('owt', '3 MINUTE');
 
-	$ob_hash = \Zotlabs\Zot\Verify::get_meta('owt',0,$token);
+	$ob_hash = \Zotlabs\Zot\Verify::get_meta('owt', 0, $token);
 
 	if($ob_hash === false) {
 		return;
@@ -262,7 +271,7 @@ function owt_init($token) {
 	}
 	if(! $r) {
 		logger('owt: unable to finger ' . $ob_hash);
-		return;	
+		return;
 	}
 	$hubloc = $r[0];
 
@@ -296,14 +305,25 @@ function owt_init($token) {
 		$_SESSION['DNT'] = 1;
 	}
 
-	$arr = array('xchan' => $hubloc, 'url' => \App::$query_string, 'session' => $_SESSION);
-	call_hooks('magic_auth_success',$arr);
+	$arr = [
+			'xchan' => $hubloc,
+			'url' => \App::$query_string,
+			'session' => $_SESSION
+	];
+	/**
+	 * @hooks magic_auth_success
+	 *   Called when a magic-auth was successful.
+	 *   * \e array \b xchan
+	 *   * \e string \b url
+	 *   * \e array \b session
+	 */
+	call_hooks('magic_auth_success', $arr);
+
 	\App::set_observer($hubloc);
 	require_once('include/security.php');
 	\App::set_groups(init_groups_visitor($_SESSION['visitor_id']));
-	if(! get_config('system','hide_owa_greeting'))
+	if(! get_config('system', 'hide_owa_greeting'))
 		info(sprintf( t('OpenWebAuth: %1$s welcomes %2$s'),\App::get_hostname(), $hubloc['xchan_name']));
-	logger('OpenWebAuth: auth success from ' . $hubloc['xchan_addr']);
-
 
+	logger('OpenWebAuth: auth success from ' . $hubloc['xchan_addr']);
 }
\ No newline at end of file
diff --git a/include/zot.php b/include/zot.php
index 5764bb99a..0aa50ab92 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -31,7 +31,6 @@ require_once('include/perm_upgrade.php');
  * @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', $rawstr, true), true));
@@ -49,7 +48,6 @@ function zot_new_uid($channel_nick) {
  * @param string $guid
  * @param string $guid_sig
  */
-
 function make_xchan_hash($guid, $guid_sig) {
 	return base64url_encode(hash('whirlpool', $guid . $guid_sig, true));
 }
@@ -104,6 +102,8 @@ function zot_get_hublocs($hash) {
  * @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 $methods
+ *   optional comma separated list of encryption methods @ref zot_best_algorithm()
  * @param string $secret
  *   random string, required for packets which require verification/callback
  *   e.g. 'pickup', 'purge', 'notify', 'auth_check'. Packet types 'ping', 'force_refresh', and 'refresh' do not require verification
@@ -159,29 +159,38 @@ function zot_build_packet($channel, $type = 'notify', $recipients = null, $remot
 }
 
 /**
- * @brief choose best encryption function from those available on both sites
- * 
+ * @brief Choose best encryption function from those available on both sites.
+ *
  * @param string $methods
  *   comma separated list of encryption methods
  * @return string first match from our site method preferences crypto_methods() array
  * of a method which is common to both sites; or 'aes256cbc' if no matches are found.
  */
-
 function zot_best_algorithm($methods) {
 
-	$x = [ 'methods' => $methods, 'result' => '' ];
-	call_hooks('zot_best_algorithm',$x);
+	$x = [
+			'methods' => $methods,
+			'result' => ''
+	];
+	/**
+	 * @hooks zot_best_algorithm
+	 *   Called when negotiating crypto algorithms with remote sites.
+	 *   * \e string \b methods - comma separated list of encryption methods
+	 *   * \e string \b result - the algorithm to return
+	 */
+	call_hooks('zot_best_algorithm', $x);
+
 	if($x['result'])
 		return $x['result'];
 
 	if($methods) {
-		$x = explode(',',$methods);
+		$x = explode(',', $methods);
 		if($x) {
 			$y = crypto_methods();
 			if($y) {
 				foreach($y as $yv) {
 					$yv = trim($yv);
-					if(in_array($yv,$x)) {
+					if(in_array($yv, $x)) {
 						return($yv);
 					}
 				}
@@ -193,7 +202,6 @@ function zot_best_algorithm($methods) {
 }
 
 
-
 /**
  * @brief
  *
@@ -210,7 +218,7 @@ function zot_zot($url, $data) {
 /**
  * @brief Refreshes after permission changed or friending, etc.
  *
- * The top half of this function is similar to \Zotlabs\Zot\Finger::run() and could potentially be
+ * The top half of this function is similar to \\Zotlabs\\Zot\\Finger::run() and could potentially be
  * consolidated.
  *
  * zot_refresh is typically invoked when somebody has changed permissions of a channel and they are notified
@@ -230,21 +238,22 @@ function zot_zot($url, $data) {
  *
  * @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
+ * @param array $force (optional) default false
  *
- * @returns boolean true if successful, else false
+ * @return boolean
+ *   * \b true if successful
+ *   * otherwise \b false
  */
-
 function zot_refresh($them, $channel = null, $force = false) {
 
 	if (array_key_exists('xchan_network', $them) && ($them['xchan_network'] !== 'zot')) {
-		logger('zot_refresh: not got zot. ' . $them['xchan_name']);
+		logger('not got zot. ' . $them['xchan_name']);
 		return true;
 	}
 
-	logger('zot_refresh: them: ' . print_r($them,true), LOGGER_DATA, LOG_DEBUG);
+	logger('them: ' . print_r($them,true), LOGGER_DATA, LOG_DEBUG);
 	if ($channel)
-		logger('zot_refresh: channel: ' . print_r($channel,true), LOGGER_DATA, LOG_DEBUG);
+		logger('channel: ' . print_r($channel,true), LOGGER_DATA, LOG_DEBUG);
 
 	$url = null;
 
@@ -315,7 +324,6 @@ function zot_refresh($them, $channel = null, $force = false) {
 		&& array_key_exists('xchan_guid_sig',$them) && $them['xchan_guid_sig']) {
 		$postvars['guid'] = $them['xchan_guid'];
 		$postvars['guid_sig'] = $them['xchan_guid_sig'];
-
 	}
 
 	$rhs = '/.well-known/zot-info';
@@ -330,7 +338,7 @@ function zot_refresh($them, $channel = null, $force = false) {
 		$j = json_decode($result['body'],true);
 
 		if (! (($j) && ($j['success']))) {
-			logger('zot_refresh: result not decodable');
+			logger('Result not decodable');
 			return false;
 		}
 
@@ -484,7 +492,7 @@ function zot_refresh($them, $channel = null, $force = false) {
 						}
 
 
-						/** If there is a default group for this channel, add this connection to it */
+						// If there is a default group for this channel, add this connection to it
 
 						$default_group = $channel['channel_default_group'];
 						if($default_group) {
@@ -528,10 +536,10 @@ function zot_refresh($them, $channel = null, $force = false) {
  *  * \e string \b url_sig => URL signed with conversant's private key
  * @param boolean $multiple (optional) default false
  *
- * @returns array|null null if site is blacklisted or not found, otherwise an
- *  array with an hubloc record
+ * @return array|null
+ *   * null if site is blacklisted or not found
+ *   * otherwise an array with an hubloc record
  */
-
 function zot_gethub($arr, $multiple = false) {
 
 	if($arr['guid'] && $arr['guid_sig'] && $arr['url'] && $arr['url_sig']) {
@@ -554,11 +562,11 @@ function zot_gethub($arr, $multiple = false) {
 			dbesc($arr['url_sig'])
 		);
 		if($r) {
-			logger('zot_gethub: found', LOGGER_DEBUG);
+			logger('Found', LOGGER_DEBUG);
 			return (($multiple) ? $r : $r[0]);
 		}
 	}
-	logger('zot_gethub: not found: ' . print_r($arr,true), LOGGER_DEBUG);
+	logger('Not found: ' . print_r($arr,true), LOGGER_DEBUG);
 
 	return false;
 }
@@ -577,11 +585,10 @@ function zot_gethub($arr, $multiple = false) {
  *  * \e string \b url => URL of the origination hub of this communication
  *  * \e string \b url_sig => URL signed with conversant's private key
  *
- * @returns array an associative array with
+ * @return array An associative array with
  *  * \b success boolean true or false
  *  * \b message (optional) error string only if success is false
  */
-
 function zot_register_hub($arr) {
 
 	$result = [ 'success' => false ];
@@ -619,7 +626,7 @@ function zot_register_hub($arr) {
 						$result['success'] = true;
 				}
 				else {
-					logger('zot_register_hub: failure to verify returned packet using ' . $method);
+					logger('Failure to verify returned packet using ' . $method);
 				}
 			}
 		}
@@ -642,13 +649,17 @@ function zot_register_hub($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.
  *
- * @return associative array
+ * @return array An associative array with:
  *   * \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) {
 
-function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
-
+	/**
+	 * @hooks import_xchan
+	 *   Called when processing the result of zot_finger() to store the result
+	 *   * \e array
+	 */
 	call_hooks('import_xchan', $arr);
 
 	$ret = array('success' => false);
@@ -658,13 +669,13 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 	$what = '';
 
 	if(! (is_array($arr) && array_key_exists('success',$arr) && $arr['success'])) {
-		logger('import_xchan: invalid data packet: ' . print_r($arr,true));
+		logger('Invalid data packet: ' . print_r($arr,true));
 		$ret['message'] = t('Invalid data packet');
 		return $ret;
 	}
 
 	if(! ($arr['guid'] && $arr['guid_sig'])) {
-		logger('import_xchan: no identity information provided. ' . print_r($arr,true));
+		logger('No identity information provided. ' . print_r($arr,true));
 		return $ret;
 	}
 
@@ -678,7 +689,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 
 	foreach($sig_methods as $method) {
 		if(! rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key'],$method)) {
-			logger('import_xchan: Unable to verify channel signature for ' . $arr['address'] . ' using ' . $method);
+			logger('Unable to verify channel signature for ' . $arr['address'] . ' using ' . $method);
 			continue;
 		}
 		else {
@@ -761,8 +772,8 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 				dbesc($xchan_hash)
 			);
 
-			logger('import_xchan: update: existing: ' . print_r($r[0],true), LOGGER_DATA, LOG_DEBUG);
-			logger('import_xchan: update: new: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
+			logger('Update: existing: ' . print_r($r[0],true), LOGGER_DATA, LOG_DEBUG);
+			logger('Update: new: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
 			$what .= 'xchan ';
 			$changed = true;
 		}
@@ -777,7 +788,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 
 		$x = xchan_store_lowlevel(
 			[
-				'xchan_hash'           => $xchan_hash, 
+				'xchan_hash'           => $xchan_hash,
 				'xchan_guid'           => $arr['guid'],
 				'xchan_guid_sig'       => $arr['guid_sig'],
 				'xchan_pubkey'         => $arr['key'],
@@ -928,7 +939,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 			}
 		}
 		else {
-			logger('import_xchan: profile not available - hiding');
+			logger('Profile not available - hiding');
 			// they may have made it private
 			$r = q("delete from xprof where xprof_hash = '%s'",
 				dbesc($xchan_hash)
@@ -950,7 +961,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 	if(($changed) || ($ud_flags == UPDATE_FLAGS_FORCED)) {
 		$guid = random_string() . '@' . App::get_hostname();
 		update_modtime($xchan_hash,$guid,$address,$ud_flags);
-		logger('import_xchan: changed: ' . $what,LOGGER_DEBUG);
+		logger('Changed: ' . $what,LOGGER_DEBUG);
 	}
 	elseif(! $ud_flags) {
 		// nothing changed but we still need to update the updates record
@@ -966,7 +977,7 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
 		$ret['hash'] = $xchan_hash;
 	}
 
-	logger('import_xchan: result: ' . print_r($ret,true), LOGGER_DATA, LOG_DEBUG);
+	logger('Result: ' . print_r($ret,true), LOGGER_DATA, LOG_DEBUG);
 	return $ret;
 }
 
@@ -980,19 +991,18 @@ function import_xchan($arr,$ud_flags = UPDATE_FLAGS_UPDATED, $ud_arr = null) {
  * @param array $arr - output of z_post_url()
  * @param array $outq - The queue structure attached to this request
  */
-
 function zot_process_response($hub, $arr, $outq) {
 
 	if(! $arr['success']) {
-		logger('zot_process_response: failed: ' . $hub);
+		logger('Failed: ' . $hub);
 		return;
 	}
 
 	$x = json_decode($arr['body'], true);
 
 	if(! $x) {
-		logger('zot_process_response: No json from ' . $hub);
-		logger('zot_process_response: headers: ' . print_r($arr['header'],true), LOGGER_DATA, LOG_DEBUG);
+		logger('No json from ' . $hub);
+		logger('Headers: ' . print_r($arr['header'], true), LOGGER_DATA, LOG_DEBUG);
 	}
 
 	if(is_array($x) && array_key_exists('delivery_report',$x) && is_array($x['delivery_report'])) {
@@ -1000,7 +1010,7 @@ function zot_process_response($hub, $arr, $outq) {
 		if(array_key_exists('iv',$x['delivery_report'])) {
 			$j = crypto_unencapsulate($x['delivery_report'],get_config('system','prvkey'));
 			if($j) {
-				$x['delivery_report'] = json_decode($j,true); 
+				$x['delivery_report'] = json_decode($j,true);
 			}
 			if(! (is_array($x['delivery_report']) && count($x['delivery_report']))) {
 				logger('encrypted delivery report could not be decrypted');
@@ -1060,7 +1070,6 @@ function zot_process_response($hub, $arr, $outq) {
  *     decrypted and json decoded notify packet from remote site
  * @return array from zot_import()
  */
-
 function zot_fetch($arr) {
 
 	logger('zot_fetch: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
@@ -1073,7 +1082,7 @@ function zot_fetch($arr) {
 
 	$ret_hubs = zot_gethub($arr['sender'],true);
 	if(! $ret_hubs) {
-		logger('zot_fetch: no hub: ' . print_r($arr['sender'],true));
+		logger('No hub: ' . print_r($arr['sender'],true));
 		return;
 	}
 
@@ -1105,7 +1114,6 @@ function zot_fetch($arr) {
 	}
 
 	return;
-
 }
 
 /**
@@ -1114,7 +1122,7 @@ function zot_fetch($arr) {
  * Process an incoming array of messages which were obtained via pickup, and
  * import, update, delete as directed.
  *
- * The message types handled here are 'activity' (e.g. posts), 'mail' ,
+ * The message types handled here are 'activity' (e.g. posts), 'mail',
  * 'profile', 'location' and 'channel_sync'.
  *
  * @param array $arr
@@ -1126,18 +1134,17 @@ function zot_fetch($arr) {
  *  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
+ *   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);
 
 	if(! $data) {
-		logger('zot_import: empty body');
+		logger('Empty body');
 		return array();
 	}
 
@@ -1173,7 +1180,7 @@ function zot_import($arr, $sender_url) {
 				$i['notify'] = json_decode(crypto_unencapsulate($i['notify'],get_config('system','prvkey')),true);
 			}
 
-			logger('zot_import: notify: ' . print_r($i['notify'],true), LOGGER_DATA, LOG_DEBUG);
+			logger('Notify: ' . print_r($i['notify'],true), LOGGER_DATA, LOG_DEBUG);
 
 			if(! is_array($i['notify'])) {
 				logger('decode error');
@@ -1183,7 +1190,7 @@ function zot_import($arr, $sender_url) {
 
 			$hub = zot_gethub($i['notify']['sender']);
 			if((! $hub) || ($hub['hubloc_url'] != $sender_url)) {
-				logger('zot_import: potential forgery: wrong site for sender: ' . $sender_url . ' != ' . print_r($i['notify'],true));
+				logger('Potential forgery: wrong site for sender: ' . $sender_url . ' != ' . print_r($i['notify'],true));
 				continue;
 			}
 
@@ -1291,7 +1298,7 @@ function zot_import($arr, $sender_url) {
 			}
 
 			if(! $deliveries) {
-				logger('zot_import: no deliveries on this site');
+				logger('No deliveries on this site');
 				continue;
 			}
 
@@ -1371,7 +1378,6 @@ function zot_import($arr, $sender_url) {
  * @param array $msg
  * @return NULL|array
  */
-
 function public_recips($msg) {
 
 	require_once('include/channel.php');
@@ -1501,9 +1507,8 @@ function public_recips($msg) {
 }
 
 /**
- * @brief
+ * @brief This is the second part of public_recips().
  *
- * This is the second part of public_recips().
  * We'll find all the channels willing to accept public posts from us, then
  * match them against the sender privacy scope and see who in that list that
  * the sender is allowing.
@@ -1583,7 +1588,6 @@ function allowed_public_recips($msg) {
  * @param boolean $request (optional) default false
  * @return array
  */
-
 function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $request = false) {
 
 	$result = array();
@@ -1594,12 +1598,11 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 
 	if(! $public) {
 		if($sender['hash'] != $arr['owner_xchan'] && $sender['hash'] != $arr['author_xchan']) {
-			logger("process_delivery: sender {$sender['hash']} is not owner {$arr['owner_xchan']} or author {$arr['author_xchan']} - mid {$arr['mid']}");
+			logger("Sender {$sender['hash']} is not owner {$arr['owner_xchan']} or author {$arr['author_xchan']} - mid {$arr['mid']}");
 			return;
 		}
 	}
 
-
 	foreach($deliveries as $d) {
 		$local_public = $public;
 
@@ -1828,7 +1831,6 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 				$DR->update('update ignored');
 				$result[] = $DR->get();
 
-
 				// We need this line to ensure wall-to-wall comments are relayed (by falling through to the relay bit),
 				// and at the same time not relay any other relayable posts more than once, because to do so is very wasteful.
 				if(! intval($r[0]['item_origin']))
@@ -1842,8 +1844,14 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 			// if it's a sourced post, call the post_local hooks as if it were
 			// posted locally so that crosspost connectors will be triggered.
 
-			if(check_item_source($arr['uid'], $arr))
+			if(check_item_source($arr['uid'], $arr)) {
+				/**
+				 * @hooks post_local
+				 *   Called when an item has been posted on this machine via mod/item.php (also via API).
+				 *   * \e array with an item
+				 */
 				call_hooks('post_local', $arr);
+			}
 
 			$item_id = 0;
 
@@ -1855,8 +1863,21 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 				$item_result = item_store($arr);
 				if($item_result['success']) {
 					$item_id = $item_result['item_id'];
-					$parr = array('item_id' => $item_id,'item' => $arr,'sender' => $sender,'channel' => $channel);
-					call_hooks('activity_received',$parr);
+					$parr = [
+							'item_id' => $item_id,
+							'item' => $arr,
+							'sender' => $sender,
+							'channel' => $channel
+					];
+					/**
+					 * @hooks activity_received
+					 *   Called when an activity (post, comment, like, etc.) has been received from a zot source.
+					 *   * \e int \b item_id
+					 *   * \e array \b item
+					 *   * \e array \b sender
+					 *   * \e array \b channel
+					 */
+					call_hooks('activity_received', $parr);
 					// don't add a source route if it's a relay or later recipients will get a route mismatch
 					if(! $relay)
 						add_source_route($item_id,$sender['hash']);
@@ -1875,7 +1896,7 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 		}
 
 		if($relay && $item_id) {
-			logger('process_delivery: invoking relay');
+			logger('Invoking relay');
 			Zotlabs\Daemon\Master::Summon(array('Notifier','relay',intval($item_id)));
 			$DR->addto_update('relayed');
 			$result[] = $DR->get();
@@ -1885,13 +1906,13 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
 	if(! $deliveries)
 		$result[] = array('', 'no recipients', '', $arr['mid']);
 
-	logger('process_delivery: local results: ' . print_r($result, true), LOGGER_DEBUG);
+	logger('Local results: ' . print_r($result, true), LOGGER_DEBUG);
 
 	return $result;
 }
 
 /**
- * @brief
+ * @brief Remove community tag.
  *
  * @param array $sender an associative array with
  *   * \e string \b hash a xchan_hash
@@ -1901,7 +1922,6 @@ function process_delivery($sender, $arr, $deliveries, $relay, $public = false, $
  *   * \e int \b mid
  * @param int $uid
  */
-
 function remove_community_tag($sender, $arr, $uid) {
 
 	if(! (activity_match($arr['verb'], ACTIVITY_TAG) && ($arr['obj_type'] == ACTIVITY_OBJ_TAGTERM)))
@@ -1910,7 +1930,7 @@ function remove_community_tag($sender, $arr, $uid) {
 	logger('remove_community_tag: invoked');
 
 	if(! get_pconfig($uid,'system','blocktags')) {
-		logger('remove_community tag: permission denied.');
+		logger('Permission denied.');
 		return;
 	}
 
@@ -1919,12 +1939,12 @@ function remove_community_tag($sender, $arr, $uid) {
 		intval($uid)
 	);
 	if(! $r) {
-		logger('remove_community_tag: no item');
+		logger('No item');
 		return;
 	}
 
 	if(($sender['hash'] != $r[0]['owner_xchan']) && ($sender['hash'] != $r[0]['author_xchan'])) {
-		logger('remove_community_tag: sender not authorised.');
+		logger('Sender not authorised.');
 		return;
 	}
 
@@ -1936,7 +1956,7 @@ function remove_community_tag($sender, $arr, $uid) {
 		$i['object'] = json_decode($i['object'],true);
 
 	if(! ($i['target'] && $i['object'])) {
-		logger('remove_community_tag: no target/object');
+		logger('No target/object');
 		return;
 	}
 
@@ -1947,7 +1967,7 @@ function remove_community_tag($sender, $arr, $uid) {
 		intval($uid)
 	);
 	if(! $r) {
-		logger('remove_community_tag: no parent message');
+		logger('No parent message');
 		return;
 	}
 
@@ -1963,16 +1983,16 @@ function remove_community_tag($sender, $arr, $uid) {
 }
 
 /**
- * @brief Just calls item_store_update() and logs result.
+ * @brief Updates an imported item.
  *
  * @see item_store_update()
  *
- * @param array $sender (unused)
+ * @param array $sender
  * @param array $item
  * @param array $orig
  * @param int $uid
+ * @param boolean $tag_delivery
  */
-
 function update_imported_item($sender, $item, $orig, $uid, $tag_delivery) {
 
 	// If this is a comment being updated, remove any privacy information
@@ -1986,10 +2006,11 @@ function update_imported_item($sender, $item, $orig, $uid, $tag_delivery) {
 		unset($item['item_private']);
 	}
 
-	// we need the tag_delivery check for downstream flowing posts as the stored post 
-	// may have a different owner than the one being transmitted. 
+	// we need the tag_delivery check for downstream flowing posts as the stored post
+	// may have a different owner than the one being transmitted.
 
 	if(($sender['hash'] != $orig['owner_xchan'] && $sender['hash'] != $orig['author_xchan']) && (! $tag_delivery)) {
+		/// @fixme shouldn't this be logger?
 		notice('sender is not owner or author');
 		return;
 	}
@@ -2024,10 +2045,9 @@ function update_imported_item($sender, $item, $orig, $uid, $tag_delivery) {
  * @param boolean $relay
  * @return boolean|int post_id
  */
-
 function delete_imported_item($sender, $item, $uid, $relay) {
 
-	logger('delete_imported_item invoked', LOGGER_DEBUG);
+	logger('invoked', LOGGER_DEBUG);
 
 	$ownership_valid = false;
 	$item_found = false;
@@ -2186,7 +2206,6 @@ function process_mail_delivery($sender, $arr, $deliveries) {
  *   * \e string \b hash a xchan_hash
  * @param array $arr
  */
-
 function process_rating_delivery($sender, $arr) {
 
 	logger('process_rating_delivery: ' . print_r($arr,true));
@@ -2246,7 +2265,6 @@ function process_rating_delivery($sender, $arr) {
  * @param array $arr
  * @param array $deliveries (unused)
  */
-
 function process_profile_delivery($sender, $arr, $deliveries) {
 
 	logger('process_profile_delivery', LOGGER_DEBUG);
@@ -2258,7 +2276,16 @@ function process_profile_delivery($sender, $arr, $deliveries) {
 		import_directory_profile($sender['hash'], $arr, $r[0]['xchan_addr'], UPDATE_FLAGS_UPDATED, 0);
 }
 
-function process_location_delivery($sender,$arr,$deliveries) {
+
+/**
+ * @brief
+ *
+ * @param array $sender an associative array
+ *   * \e string \b hash a xchan_hash
+ * @param array $arr
+ * @param array $deliveries (unused) deliveries is irrelevant
+ */
+function process_location_delivery($sender, $arr, $deliveries) {
 
 	// deliveries is irrelevant
 	logger('process_location_delivery', LOGGER_DEBUG);
@@ -2271,7 +2298,7 @@ function process_location_delivery($sender,$arr,$deliveries) {
 
 	if(array_key_exists('locations',$arr) && $arr['locations']) {
 		$x = sync_locations($sender,$arr,true);
-		logger('process_location_delivery: results: ' . print_r($x,true), LOGGER_DEBUG);
+		logger('results: ' . print_r($x,true), LOGGER_DEBUG);
 		if($x['changed']) {
 			$guid = random_string() . '@' . App::get_hostname();
 			update_modtime($sender['hash'],$sender['guid'],$arr['locations'][0]['address'],UPDATE_FLAGS_UPDATED);
@@ -2280,7 +2307,7 @@ function process_location_delivery($sender,$arr,$deliveries) {
 }
 
 /**
- * @brief checks for a moved UNO channel and sets the channel_moved flag
+ * @brief Checks for a moved UNO channel and sets the channel_moved flag.
  *
  * Currently the effect of this flag is to turn the channel into 'read-only' mode.
  * New content will not be processed (there was still an issue with blocking the
@@ -2294,11 +2321,11 @@ function process_location_delivery($sender,$arr,$deliveries) {
  * if a new location is reported and there is only one location record.
  * The rest of the hubloc syncronisation will be handled within
  * sync_locations
+ *
+ * @param string $sender_hash A channel hash
+ * @param array $locations
  */
-
-
-
-function check_location_move($sender_hash,$locations) {
+function check_location_move($sender_hash, $locations) {
 
 	if(! $locations)
 		return;
@@ -2324,11 +2351,18 @@ function check_location_move($sender_hash,$locations) {
 		// federation plugins may wish to notify connections
 		// of the move on singleton networks
 
-		$arr = array('channel' => $r[0],'locations' => $locations);
-		call_hooks('location_move',$arr);
-
+		$arr = [
+				'channel' => $r[0],
+				'locations' => $locations
+		];
+		/**
+		 * @hooks location_move
+		 *   Called when a new location has been provided to a UNO channel (indicating a move rather than a clone).
+		 *   * \e array \b channel
+		 *   * \e array \b locations
+		 */
+		call_hooks('location_move', $arr);
 	}
-
 }
 
 
@@ -2340,7 +2374,6 @@ function check_location_move($sender_hash,$locations) {
  * @param boolean $absolute (optional) default false
  * @return array
  */
-
 function sync_locations($sender, $arr, $absolute = false) {
 
 	$ret = array();
@@ -2350,7 +2383,6 @@ function sync_locations($sender, $arr, $absolute = false) {
 		if($absolute)
 			check_location_move($sender['hash'],$arr['locations']);
 
-
 		$xisting = q("select hubloc_id, hubloc_url, hubloc_sitekey from hubloc where hubloc_hash = '%s'",
 			dbesc($sender['hash'])
 		);
@@ -2372,7 +2404,7 @@ function sync_locations($sender, $arr, $absolute = false) {
 
 		foreach($arr['locations'] as $location) {
 			if(! rsa_verify($location['url'],base64url_decode($location['url_sig']),$sender['key'])) {
-				logger('sync_locations: Unable to verify site signature for ' . $location['url']);
+				logger('Unable to verify site signature for ' . $location['url']);
 				$ret['message'] .= sprintf( t('Unable to verify site signature for %s'), $location['url']) . EOL;
 				continue;
 			}
@@ -2385,7 +2417,7 @@ function sync_locations($sender, $arr, $absolute = false) {
 			}
 
 			if(! $location['sitekey']) {
-				logger('sync_locations: empty hubloc sitekey. ' . print_r($location,true));
+				logger('Empty hubloc sitekey. ' . print_r($location,true));
 				continue;
 			}
 
@@ -2408,7 +2440,7 @@ function sync_locations($sender, $arr, $absolute = false) {
 				dbesc($location['sitekey'])
 			);
 			if($r) {
-				logger('sync_locations: hub exists: ' . $location['url'], LOGGER_DEBUG);
+				logger('Hub exists: ' . $location['url'], LOGGER_DEBUG);
 
 				// update connection timestamp if this is the site we're talking to
 				// This only happens when called from import_xchan
@@ -2510,7 +2542,7 @@ function sync_locations($sender, $arr, $absolute = false) {
 					dbesc($sender['hash'])
 				);
 			}
-			logger('sync_locations: new hub: ' . $location['url']);
+			logger('New hub: ' . $location['url']);
 
 			$r = hubloc_store_lowlevel(
 				[
@@ -2548,7 +2580,7 @@ function sync_locations($sender, $arr, $absolute = false) {
 		if($absolute && $xisting) {
 			foreach($xisting as $x) {
 				if(! array_key_exists('updated',$x)) {
-					logger('sync_locations: deleting unreferenced hub location ' . $x['hubloc_addr']);
+					logger('Deleting unreferenced hub location ' . $x['hubloc_addr']);
 					$r = q("update hubloc set hubloc_deleted = 1, hubloc_updated = '%s' where hubloc_id = %d",
 						dbesc(datetime_convert()),
 						intval($x['hubloc_id'])
@@ -2613,11 +2645,10 @@ function zot_encode_locations($channel) {
  * @param string $hash
  * @param array $profile
  * @param string $addr
- * @param number $ud_flags
- * @param number $suppress_update default 0
+ * @param number $ud_flags (optional) UPDATE_FLAGS_UPDATED
+ * @param number $suppress_update (optional) default 0
  * @return boolean $updated if something changed
  */
-
 function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLAGS_UPDATED, $suppress_update = 0) {
 
 	logger('import_directory_profile', LOGGER_DEBUG);
@@ -2717,7 +2748,7 @@ function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLA
 		}
 	} else {
 		$update = true;
-		logger('import_directory_profile: new profile ');
+		logger('New profile');
 		q("insert into xprof (xprof_hash, xprof_desc, xprof_dob, xprof_age, xprof_gender, xprof_marital, xprof_sexual, xprof_locale, xprof_region, xprof_postcode, xprof_country, xprof_about, xprof_homepage, xprof_hometown, xprof_keywords) values ('%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
 			dbesc($arr['xprof_hash']),
 			dbesc($arr['xprof_desc']),
@@ -2737,7 +2768,18 @@ function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLA
 		);
 	}
 
-	$d = array('xprof' => $arr, 'profile' => $profile, 'update' => $update);
+	$d = [
+			'xprof' => $arr,
+			'profile' => $profile,
+			'update' => $update
+	];
+	/**
+	 * @hooks import_directory_profile
+	 *   Called when processing delivery of a profile structure from an external source (usually for directory storage).
+	 *   * \e array \b xprof
+	 *   * \e array \b profile
+	 *   * \e boolean \b update
+	 */
 	call_hooks('import_directory_profile', $d);
 
 	if (($d['update']) && (! $suppress_update))
@@ -2749,10 +2791,9 @@ function import_directory_profile($hash, $profile, $addr, $ud_flags = UPDATE_FLA
 /**
  * @brief
  *
- * @param string $hash
+ * @param string $hash An xtag_hash
  * @param array $keywords
  */
-
 function import_directory_keywords($hash, $keywords) {
 
 	$existing = array();
@@ -2797,7 +2838,6 @@ function import_directory_keywords($hash, $keywords) {
  * @param string $addr
  * @param int $flags (optional) default 0
  */
-
 function update_modtime($hash, $guid, $addr, $flags = 0) {
 
 	$dirmode = intval(get_config('system', 'directory_mode'));
@@ -2830,13 +2870,12 @@ function update_modtime($hash, $guid, $addr, $flags = 0) {
  * @param string $pubkey
  * @return boolean true if updated or inserted
  */
-
 function import_site($arr, $pubkey) {
 	if( (! is_array($arr)) || (! $arr['url']) || (! $arr['url_sig']))
 		return false;
 
 	if(! rsa_verify($arr['url'], base64url_decode($arr['url_sig']), $pubkey)) {
-		logger('import_site: bad url_sig');
+		logger('Bad url_sig');
 		return false;
 	}
 
@@ -2915,7 +2954,7 @@ function import_site($arr, $pubkey) {
 
 	if(array_key_exists('zot',$arr)) {
 		set_sconfig($arr['url'],'system','zot_version',$arr['zot']);
-	} 
+	}
 
 	if($exists) {
 		if(($siterecord['site_flags'] != $site_flags)
@@ -2934,7 +2973,6 @@ function import_site($arr, $pubkey) {
 //			logger('import_site: input: ' . print_r($arr,true));
 //			logger('import_site: stored: ' . print_r($siterecord,true));
 
-
 			$r = q("update site set site_dead = 0, site_location = '%s', site_flags = %d, site_access = %d, site_directory = '%s', site_register = %d, site_update = '%s', site_sellpage = '%s', site_realm = '%s', site_type = %d, site_project = '%s', site_version = '%s', site_crypto = '%s'
 				where site_url = '%s'",
 				dbesc($site_location),
@@ -2952,7 +2990,7 @@ function import_site($arr, $pubkey) {
 				dbesc($url)
 			);
 			if(! $r) {
-				logger('import_site: update failed. ' . print_r($arr,true));
+				logger('Update failed. ' . print_r($arr,true));
 			}
 		}
 		else {
@@ -2966,7 +3004,7 @@ function import_site($arr, $pubkey) {
 	else {
 		$update = true;
 
-		$r = site_store_lowlevel( 
+		$r = site_store_lowlevel(
 			[
 				'site_location'  => $site_location,
 				'site_url'       => $url,
@@ -2985,7 +3023,7 @@ function import_site($arr, $pubkey) {
 		);
 
 		if(! $r) {
-			logger('import_site: record create failed. ' . print_r($arr,true));
+			logger('Record create failed. ' . print_r($arr,true));
 		}
 	}
 
@@ -2994,20 +3032,19 @@ function import_site($arr, $pubkey) {
 
 
 /**
+ * @brief Builds and sends a sync packet.
+ *
  * Send a zot packet to all hubs where this channel is duplicated, refreshing
  * such things as personal settings, channel permissions, address book updates, etc.
  *
- * @param int $uid
+ * @param int $uid (optional) default 0
  * @param array $packet (optional) default null
  * @param boolean $groups_changed (optional) default false
  */
-
 function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
 
-
 	logger('build_sync_packet');
 
-
 	$keychange = (($packet && array_key_exists('keychange',$packet)) ? true : false);
 	if($keychange) {
 		logger('keychange sync');
@@ -3122,6 +3159,7 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
 		);
 		if($r)
 			$info['collections'] = $r;
+
 		$r = q("select groups.hash as collection, group_member.xchan as member from groups left join group_member on groups.id = group_member.gid where group_member.uid = %d",
 			intval($uid)
 		);
@@ -3132,7 +3170,7 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
 	$interval = ((get_config('system','delivery_interval') !== false)
 			? intval(get_config('system','delivery_interval')) : 2 );
 
-	logger('build_sync_packet: packet: ' . print_r($info,true), LOGGER_DATA, LOG_DEBUG);
+	logger('Packet: ' . print_r($info,true), LOGGER_DATA, LOG_DEBUG);
 
 	$total = count($synchubs);
 
@@ -3173,7 +3211,6 @@ function build_sync_packet($uid = 0, $packet = null, $groups_changed = false) {
  * @param array $deliveries
  * @return array
  */
-
 function process_channel_sync_delivery($sender, $arr, $deliveries) {
 
 	require_once('include/import.php');
@@ -3201,7 +3238,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 		$max_feeds = account_service_class_fetch($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']);
+			logger('Possible forgery. Sender ' . $sender['hash'] . ' is not ' . $channel['channel_hash']);
 			$result[] = array($d['hash'],'channel mismatch',$channel['channel_name'],'');
 			continue;
 		}
@@ -3217,7 +3254,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 			$hash = make_xchan_hash($channel['channel_guid'],$sig);
 
 
-			$r = q("update channel set channel_prvkey = '%s', channel_pubkey = '%s', channel_guid_sig = '%s', 
+			$r = q("update channel set channel_prvkey = '%s', channel_pubkey = '%s', channel_guid_sig = '%s',
 				channel_hash = '%s' where channel_id = %d",
 				dbesc($arr['channel']['channel_prvkey']),
 				dbesc($arr['channel']['channel_pubkey']),
@@ -3360,7 +3397,6 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 					$arr['channel']['channel_pageflags'] = $arr['channel']['channel_pageflags'] - 0x8000;
 				if($arr['channel']['channel_pageflags'] & 0x1000)
 					$arr['channel']['channel_pageflags'] = $arr['channel']['channel_pageflags'] - 0x1000;
-
 			}
 
 			$disallowed = [
@@ -3426,7 +3462,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 
 				$clean = array();
 				if($abook['abook_xchan'] && $abook['entry_deleted']) {
-					logger('process_channel_sync_delivery: removing abook entry for ' . $abook['abook_xchan']);
+					logger('Removing abook entry for ' . $abook['abook_xchan']);
 
 					$r = q("select abook_id, abook_feed from abook where abook_xchan = '%s' and abook_channel = %d and abook_self = 0 limit 1",
 						dbesc($abook['abook_xchan']),
@@ -3451,7 +3487,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 					if(! $h) {
 						$xhash = import_author_xchan(encode_item_xchan($abook));
 						if(! $xhash) {
-							logger('process_channel_sync_delivery: import of ' . $abook['xchan_addr'] . ' failed.');
+							logger('Import of ' . $abook['xchan_addr'] . ' failed.');
 							continue;
 						}
 					}
@@ -3468,7 +3504,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 
 				if(array_key_exists('abook_instance',$clean) && $clean['abook_instance'] && strpos($clean['abook_instance'],z_root()) === false) {
 					$clean['abook_not_here'] = 1;
-				} 
+				}
 
 
 				$r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",
@@ -3480,11 +3516,11 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 
 				if(! $r) {
 					if($max_friends !== false && $total_friends > $max_friends) {
-						logger('process_channel_sync_delivery: total_channels service class limit exceeded');
+						logger('total_channels service class limit exceeded');
 						continue;
 					}
 					if($max_feeds !== false && intval($clean['abook_feed']) && $total_feeds > $max_feeds) {
-						logger('process_channel_sync_delivery: total_feeds service class limit exceeded');
+						logger('total_feeds service class limit exceeded');
 						continue;
 					}
 					abook_store_lowlevel(
@@ -3503,6 +3539,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 					foreach($clean as $k => $v) {
 						if($k == 'abook_dob')
 							$v = dbescdate($v);
+
 						$r = dbq("UPDATE abook set " . dbesc($k) . " = '" . dbesc($v)
 						. "' where abook_xchan = '" . dbesc($clean['abook_xchan']) . "' and abook_channel = " . intval($channel['channel_id']));
 					}
@@ -3515,7 +3552,7 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 				translate_abook_perms_inbound($channel,$abook);
 
 				if($abconfig) {
-					// @fixme does not handle sync of del_abconfig
+					/// @fixme does not handle sync of del_abconfig
 					foreach($abconfig as $abc) {
 						set_abconfig($channel['channel_id'],$abc['xchan'],$abc['cat'],$abc['k'],$abc['v']);
 					}
@@ -3712,15 +3749,21 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 				if(count($clean)) {
 					foreach($clean as $k => $v) {
 						$r = dbq("UPDATE profile set " . TQUOT . dbesc($k) . TQUOT . " = '" . dbesc($v)
-						. "' where profile_guid = '" . dbesc($profile['profile_guid']) 
+						. "' where profile_guid = '" . dbesc($profile['profile_guid'])
 						. "' and uid = " . intval($channel['channel_id']));
 					}
 				}
 			}
 		}
 
-		$addon = array('channel' => $channel,'data' => $arr);
-		call_hooks('process_channel_sync_delivery',$addon);
+		$addon = ['channel' => $channel, 'data' => $arr];
+		/**
+		 * @hooks process_channel_sync_delivery
+		 *   Called when accepting delivery of a 'sync packet' containing structure and table updates from a channel clone.
+		 *   * \e array \b channel
+		 *   * \e array \b data
+		 */
+		call_hooks('process_channel_sync_delivery', $addon);
 
 		// we should probably do this for all items, but usually we only send one.
 
@@ -3732,7 +3775,6 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 			$DR = new Zotlabs\Zot\DReport(z_root(),$d['hash'],$d['hash'],'sync packet','channel sync delivered');
 
 		$result[] = $DR->get();
-
 	}
 
 	return $result;
@@ -3747,7 +3789,6 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
  *   * \e string \b xchan_url
  * @return string
  */
-
 function get_rpost_path($observer) {
 	if(! $observer)
 		return '';
@@ -3763,7 +3804,6 @@ function get_rpost_path($observer) {
  * @param array $x
  * @return boolean|string return false or a hash
  */
-
 function import_author_zot($x) {
 
 	// Check that we have both a hubloc and xchan record - as occasionally storage calls will fail and
@@ -3797,7 +3837,7 @@ function import_author_zot($x) {
 		$site_dead = true;
 	}
 
-	// We have valid and somewhat fresh information. 
+	// We have valid and somewhat fresh information.
 
 	if($r1 && $r2 && $r1[0]['hubloc_updated'] > datetime_convert('UTC','UTC','now - 1 week')) {
 		logger('in cache', LOGGER_DEBUG);
@@ -3806,16 +3846,16 @@ function import_author_zot($x) {
 
 	logger('not in cache or cache stale - probing: ' . print_r($x,true), LOGGER_DEBUG,LOG_INFO);
 
-	// The primary hub may be dead. Try to find another one associated with this identity that is 
-	// still alive. If we find one, use that url for the discovery/refresh probe. Otherwise, the dead site 
-	// is all we have and there is no point probing it. Just return the hash indicating we have a 
-	// cached entry and the identity is valid. It's just unreachable until they bring back their 
-	// server from the grave or create another clone elsewhere. 
+	// The primary hub may be dead. Try to find another one associated with this identity that is
+	// still alive. If we find one, use that url for the discovery/refresh probe. Otherwise, the dead site
+	// is all we have and there is no point probing it. Just return the hash indicating we have a
+	// cached entry and the identity is valid. It's just unreachable until they bring back their
+	// server from the grave or create another clone elsewhere.
 
 	if($site_dead) {
 		logger('dead site - ignoring', LOGGER_DEBUG,LOG_INFO);
 
-		$r = q("select hubloc_url from hubloc left join site on hubloc_url = site_url 
+		$r = q("select hubloc_url from hubloc left join site on hubloc_url = site_url
 			where hubloc_hash = '%s' and site_dead = 0",
 			dbesc($hash)
 		);
@@ -3826,8 +3866,7 @@ function import_author_zot($x) {
 		else {
 			return $hash;
 		}
-	} 
-
+	}
 
 
 	$them = array('hubloc_url' => $desturl, 'xchan_guid' => $x['guid'], 'xchan_guid_sig' => $x['guid_sig']);
@@ -3854,7 +3893,6 @@ function import_author_zot($x) {
  * @param array $data
  * @return array
  */
-
 function zot_reply_message_request($data) {
 	$ret = array('success' => false);
 
@@ -3950,9 +3988,9 @@ function zot_rekey_request($sender,$data) {
 	//	newsig is newkey signed with oldkey
 
 	// The original xchan will remain. In Zot/Receiver we will have imported the new xchan and hubloc to verify
-	// the packet authenticity. What we will do now is verify that the keychange operation was signed by the 
-	// oldkey, and if so change all the abook, abconfig, group, and permission elements which reference the 
-	// old xchan_hash. 
+	// the packet authenticity. What we will do now is verify that the keychange operation was signed by the
+	// oldkey, and if so change all the abook, abconfig, group, and permission elements which reference the
+	// old xchan_hash.
 
 	if((! $data['old_key']) && (! $data['new_key']) && (! $data['new_sig']))
 		json_return_and_die($ret);
@@ -4075,10 +4113,18 @@ function zotinfo($arr) {
 
 	$id = $e['channel_id'];
 
-	$x = [ 'channel_id' => $id, 'protocols' => ['zot'] ];
-	call_hooks('channel_protocols',$x);
-	$protocols = $x['protocols'];
+	$x = [
+			'channel_id' => $id,
+			'protocols' => ['zot']
+	];
+	/**
+	 * @hooks channel_protocols
+	 *   * \e int \b channel_id
+	 *   * \e array \b protocols
+	 */
+	call_hooks('channel_protocols', $x);
 
+	$protocols = $x['protocols'];
 
 	$sys_channel     = (intval($e['channel_system'])   ? true : false);
 	$special_channel = (($e['channel_pageflags'] & PAGE_PREMIUM)  ? true : false);
@@ -4131,6 +4177,7 @@ function zotinfo($arr) {
 
 		if($age = age($p[0]['dob'],$e['channel_timezone'],''))
 			$profile['age'] = $age;
+
 		$profile['gender']        = $p[0]['gender'];
 		$profile['marital']       = $p[0]['marital'];
 		$profile['sexual']        = $p[0]['sexual'];
@@ -4190,7 +4237,6 @@ function zotinfo($arr) {
 		$ret['deleted_locally'] = true;
 
 
-
 	// premium or other channel desiring some contact with potential followers before connecting.
 	// This is a template - %s will be replaced with the follow_url we discover for the return channel.
 
@@ -4234,10 +4280,14 @@ function zotinfo($arr) {
 
 	check_zotinfo($e,$x,$ret);
 
+	/**
+	 * @hooks zot_finger
+	 *   Called when a zot-info packet has been requested (this is our webfinger discovery mechanism).
+	 *   * \e array The final return array
+	 */
+	call_hooks('zot_finger', $ret);
 
-	call_hooks('zot_finger',$ret);
 	return($ret);
-
 }
 
 
@@ -4328,11 +4378,17 @@ function zot_site_info($channel_key = '') {
 	}
 
 	return $ret['site'];
-
 }
 
-function check_zotinfo($channel,$locations,&$ret) {
-
+/**
+ * @brief
+ *
+ * @param array $channel
+ * @param array $locations
+ * @param[out] array $ret
+ *   \e array \b locations result of zot_encode_locations()
+ */
+function check_zotinfo($channel, $locations, &$ret) {
 
 //	logger('locations: ' . print_r($locations,true),LOGGER_DATA, LOG_DEBUG);
 
@@ -4340,7 +4396,7 @@ function check_zotinfo($channel,$locations,&$ret) {
 	// 1. Because magic-auth is reliant on it, ensure that the system channel has a valid hubloc
 	//    Force this to be the case if anything is found to be wrong with it.
 
-	// @FIXME ensure that the system channel exists in the first place and has an xchan
+	/// @FIXME ensure that the system channel exists in the first place and has an xchan
 
 	if($channel['channel_system']) {
 		// the sys channel must have a location (hubloc)
@@ -4395,12 +4451,23 @@ function check_zotinfo($channel,$locations,&$ret) {
 	}
 }
 
+/**
+ * @brief
+ *
+ * @param array $dr
+ * @return boolean
+ */
 function delivery_report_is_storable($dr) {
 
-	if(get_config('system','disable_dreport'))
+	if(get_config('system', 'disable_dreport'))
 		return false;
 
-	call_hooks('dreport_is_storable',$dr);
+	/**
+	 * @hooks dreport_is_storable
+	 *   Called before storing a dreport record to determine whether to store it.
+	 *   * \e array
+	 */
+	call_hooks('dreport_is_storable', $dr);
 
 	// let plugins accept or reject - if neither, continue on
 	if(array_key_exists('accept',$dr) && intval($dr['accept']))
@@ -4455,12 +4522,18 @@ function delivery_report_is_storable($dr) {
 		return true;
 
 	return false;
-
 }
 
 
-
-function update_hub_connected($hub,$sitekey = '') {
+/**
+ * @brief
+ *
+ * @param array $hub
+ * @param string $sitekey (optional, default empty)
+ *
+ * @return string hubloc_url
+ */
+function update_hub_connected($hub, $sitekey = '') {
 
 	if($sitekey) {
 
@@ -4489,7 +4562,7 @@ function update_hub_connected($hub,$sitekey = '') {
 	// Update our DB to show when we last communicated successfully with this hub
 	// This will allow us to prune dead hubs from using up resources
 
-	$t = datetime_convert('UTC','UTC','now - 15 minutes');
+	$t = datetime_convert('UTC', 'UTC', 'now - 15 minutes');
 
 	$r = q("update hubloc set hubloc_connected = '%s' where hubloc_id = %d and hubloc_sitekey = '%s' and hubloc_connected < '%s' ",
 		dbesc(datetime_convert()),
@@ -4519,14 +4592,18 @@ function update_hub_connected($hub,$sitekey = '') {
 	return $hub['hubloc_url'];
 }
 
-
+/**
+ * @brief Useful to get a health check on a remote site.
+ *
+ * This will let us know if any important communication details
+ * that we may have stored are no longer valid, regardless of xchan details.
+ *
+ * @return json_return_and_die()
+ */
 function zot_reply_ping() {
 
 	$ret = array('success'=> false);
 
-	// Useful to get a health check on a remote site.
-	// This will let us know if any important communication details
-	// that we may have stored are no longer valid, regardless of xchan details.
 	logger('POST: got ping send pong now back: ' . z_root() , LOGGER_DEBUG );
 
 	$ret['success'] = true;
@@ -4534,6 +4611,7 @@ function zot_reply_ping() {
 	$ret['site']['url'] = z_root();
 	$ret['site']['url_sig'] = base64url_encode(rsa_sign(z_root(),get_config('system','prvkey')));
 	$ret['site']['sitekey'] = get_config('system','pubkey');
+
 	json_return_and_die($ret);
 }
 
@@ -4551,6 +4629,7 @@ function zot_reply_pickup($data) {
 	if((! $data['secret']) || (! $data['secret_sig'])) {
 		$ret['message'] = 'no verification signature';
 		logger('mod_zot: pickup: ' . $ret['message'], LOGGER_DEBUG);
+
 		json_return_and_die($ret);
 	}
 
@@ -4561,6 +4640,7 @@ function zot_reply_pickup($data) {
 	if(! $r) {
 		$ret['message'] = 'site not found';
 		logger('mod_zot: pickup: ' . $ret['message']);
+
 		json_return_and_die($ret);
 	}
 
@@ -4590,12 +4670,14 @@ function zot_reply_pickup($data) {
 	if($forgery) {
 		$ret['message'] = 'possible site forgery';
 		logger('mod_zot: pickup: ' . $ret['message']);
+
 		json_return_and_die($ret);
 	}
 
 	if($secret_fail) {
 		$ret['message'] = 'secret validation failed';
 		logger('mod_zot: pickup: ' . $ret['message']);
+
 		json_return_and_die($ret);
 	}
 
@@ -4612,6 +4694,7 @@ function zot_reply_pickup($data) {
 	if(! $r) {
 		$ret['message'] = 'nothing to pick up';
 		logger('mod_zot: pickup: ' . $ret['message']);
+
 		json_return_and_die($ret);
 	}
 
@@ -4657,8 +4740,8 @@ function zot_reply_pickup($data) {
 	$algorithm = zot_best_algorithm(($x) ? $x[0]['site_crypto'] : '');
 
 	$encrypted = crypto_encapsulate(json_encode($ret),$sitekey,$algorithm);
-	json_return_and_die($encrypted);
 
+	json_return_and_die($encrypted);
 	/* pickup: end */
 }
 
@@ -4686,6 +4769,7 @@ function zot_reply_auth_check($data,$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);
 	}
 
@@ -4694,11 +4778,12 @@ function zot_reply_auth_check($data,$encrypted_packet) {
 
 	// garbage collect any old unused notifications
 
-	// This was and should be 10 minutes but my hosting provider has time lag between the DB and
-	// the web server. We should probably convert this to webserver time rather than DB time so
-	// that the different clocks won't affect it and allow us to keep the time short.
-
-	Zotlabs\Zot\Verify::purge('auth','30 MINUTE');
+	/**
+	 * @TODO This was and should be 10 minutes but my hosting provider has time lag between the DB and
+	 * the web server. We should probably convert this to webserver time rather than DB time so
+	 * that the different clocks won't affect it and allow us to keep the time short.
+	 */
+	Zotlabs\Zot\Verify::purge('auth', '30 MINUTE');
 
 	$y = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1",
 		dbesc($sender_hash)
@@ -4712,6 +4797,7 @@ function zot_reply_auth_check($data,$encrypted_packet) {
 	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);
 	}
 
@@ -4729,6 +4815,7 @@ function zot_reply_auth_check($data,$encrypted_packet) {
 		if (! $c) {
 			logger('mod_zot: auth_check: recipient channel not found.');
 			$ret['message'] .= 'recipient not found.' . EOL;
+
 			json_return_and_die($ret);
 		}
 
@@ -4737,11 +4824,11 @@ function zot_reply_auth_check($data,$encrypted_packet) {
 		// This additionally checks for forged sites since we already stored the expected result in meta
 		// and we've already verified that this is them via zot_gethub() and that their key signed our token
 
-
 		$z = Zotlabs\Zot\Verify::match('auth',$c[0]['channel_id'],$data['secret'],$data['sender']['url']);
 		if (! $z) {
 			logger('mod_zot: auth_check: verification key not found.');
 			$ret['message'] .= 'verification key not found' . EOL;
+
 			json_return_and_die($ret);
 		}
 
@@ -4769,11 +4856,19 @@ function zot_reply_auth_check($data,$encrypted_packet) {
 
 		json_return_and_die($ret);
 	}
+
 	json_return_and_die($ret);
 }
 
-
-function zot_reply_purge($sender,$recipients) {
+/**
+ * @brief
+ *
+ * @param array $sender
+ * @param array $recipients
+ *
+ * return json_return_and_die()
+ */
+function zot_reply_purge($sender, $recipients) {
 
 	$ret = array('success' => false);
 
@@ -4811,17 +4906,23 @@ function zot_reply_purge($sender,$recipients) {
 	json_return_and_die($ret);
 }
 
-
-function zot_reply_refresh($sender,$recipients) {
+/**
+ * @brief Remote channel info (such as permissions or photo or something)
+ * has been updated. Grab a fresh copy and sync it.
+ *
+ * The difference between refresh and force_refresh is that force_refresh
+ * unconditionally creates a directory update record, even if no changes were
+ * detected upon processing.
+ *
+ * @param array $sender
+ * @param array $recipients
+ *
+ * @return json_return_and_die()
+ */
+function zot_reply_refresh($sender, $recipients) {
 
 	$ret = array('success' => false);
 
-	// remote channel info (such as permissions or photo or something)
-	// has been updated. Grab a fresh copy and sync it.
-	// The difference between refresh and force_refresh is that
-	// force_refresh unconditionally creates a directory update record,
-	// even if no changes were detected upon processing.
-
 	if($recipients) {
 
 		// This would be a permissions update, typically for one connection
@@ -4842,7 +4943,7 @@ function zot_reply_refresh($sender,$recipients) {
 		}
 	}
 	else {
-			// system wide refresh
+		// system wide refresh
 
 		$x = zot_refresh(array(
 			'xchan_guid'     => $sender['guid'],
@@ -4853,7 +4954,6 @@ function zot_reply_refresh($sender,$recipients) {
 
 	$ret['success'] = true;
 	json_return_and_die($ret);
-
 }
 
 
@@ -4876,5 +4976,4 @@ function zot_reply_notify($data) {
 
 	$ret['success'] = true;
 	json_return_and_die($ret);
-
 }