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-Setting Up Caching {#caching.setting.up}
-==================
-
-The first thing to do is enable caching by setting
-[`$caching`](#variable.caching) to one of
-`Smarty::CACHING_LIFETIME_CURRENT` or `Smarty::CACHING_LIFETIME_SAVED`.
-
-
-    <?php
-    require('Smarty.class.php');
-    $smarty = new Smarty;
-
-    // uses the value of $smarty->cacheLifetime() to determine
-    // the number of seconds a cache is good for
-    $smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
-
-    $smarty->display('index.tpl');
-    ?>
-
-        
-
-With caching enabled, the function call to `display('index.tpl')` will
-render the template as usual, but also saves a copy of its output to a
-file (a cached copy) in the [`$cache_dir`](#variable.cache.dir). On the
-next call to `display('index.tpl')`, the cached copy will be used
-instead of rendering the template again.
-
-> **Note**
->
-> The files in the [`$cache_dir`](#variable.cache.dir) are named similar
-> to the template name. Although they end in the `.php` extension, they
-> are not intended to be directly executable. Do not edit these files!
-
-Each cached page has a limited lifetime determined by
-[`$cache_lifetime`](#variable.cache.lifetime). The default value is 3600
-seconds, or one hour. After that time expires, the cache is regenerated.
-It is possible to give individual caches their own expiration time by
-setting [`$caching`](#variable.caching) to
-`Smarty::CACHING_LIFETIME_SAVED`. See
-[`$cache_lifetime`](#variable.cache.lifetime) for more details.
-
-
-    <?php
-    require('Smarty.class.php');
-    $smarty = new Smarty;
-
-    // retain current cache lifetime for each specific display call
-    $smarty->setCaching(Smarty::CACHING_LIFETIME_SAVED);
-
-    // set the cache_lifetime for index.tpl to 5 minutes
-    $smarty->setCacheLifetime(300);
-    $smarty->display('index.tpl');
-
-    // set the cache_lifetime for home.tpl to 1 hour
-    $smarty->setCacheLifetime(3600);
-    $smarty->display('home.tpl');
-
-    // NOTE: the following $cache_lifetime setting will not work when $caching
-    // is set to Smarty::CACHING_LIFETIME_SAVED.
-    // The cache lifetime for home.tpl has already been set
-    // to 1 hour, and will no longer respect the value of $cache_lifetime.
-    // The home.tpl cache will still expire after 1 hour.
-    $smarty->setCacheLifetime(30); // 30 seconds
-    $smarty->display('home.tpl');
-    ?>
-
-        
-
-If [`$compile_check`](#variable.compile.check) is enabled (default),
-every template file and config file that is involved with the cache file
-is checked for modification. If any of the files have been modified
-since the cache was generated, the cache is immediately regenerated.
-This is a computational overhead, so for optimum performance set
-[`$compile_check`](#variable.compile.check) to FALSE.
-
-
-    <?php
-    require('Smarty.class.php');
-    $smarty = new Smarty;
-
-    $smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
-    $smarty->setCompileCheck(false);
-
-    $smarty->display('index.tpl');
-    ?>
-
-        
-
-If [`$force_compile`](#variable.force.compile) is enabled, the cache
-files will always be regenerated. This effectively disables caching,
-however this also seriously degrades performance.
-[`$force_compile`](#variable.force.compile) is meant to be used for
-[debugging](#chapter.debugging.console) purposes. The appropriate way to
-disable caching is to set [`$caching`](#variable.caching) to
-Smarty::CACHING\_OFF.
-
-The [`isCached()`](#api.is.cached) function can be used to test if a
-template has a valid cache or not. If you have a cached template that
-requires something like a database fetch, you can use this to skip that
-process.
-
-
-    <?php
-    require('Smarty.class.php');
-    $smarty = new Smarty;
-
-    $smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
-
-    if(!$smarty->isCached('index.tpl')) {
-        // No cache available, do variable assignments here.
-        $contents = get_database_contents();
-        $smarty->assign($contents);
-    }
-
-    $smarty->display('index.tpl');
-    ?>
-
-        
-
-You can keep parts of a page dynamic (disable caching) with the
-[`{nocache}{/nocache}`](#language.function.nocache) block function, the
-[`{insert}`](#language.function.insert) function, or by using the
-`nocache` parameter for most template functions.
-
-Let\'s say the whole page can be cached except for a banner that is
-displayed down the side of the page. By using the
-[`{insert}`](#language.function.insert) function for the banner, you can
-keep this element dynamic within the cached content. See the
-documentation on [`{insert}`](#language.function.insert) for more
-details and examples.
-
-You can clear all the cache files with the
-[`clearAllCache()`](#api.clear.all.cache) function, or individual cache
-files [and groups](#caching.groups) with the
-[`clearCache()`](#api.clear.cache) function.
-
-
-    <?php
-    require('Smarty.class.php');
-    $smarty = new Smarty;
-
-    $smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);
-
-    // clear only cache for index.tpl
-    $smarty->clearCache('index.tpl');
-
-    // clear out all cache files
-    $smarty->clearAllCache();
-
-    $smarty->display('index.tpl');
-    ?>
-
-