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|  | <title>Terms Used to Describe Modules - Apache HTTP Server</title> | 
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|  | <p class="apache">Apache HTTP Server Version 2.3</p> | 
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|  | <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.3</a></div><div id="page-content"><div id="preamble"><h1>Terms Used to Describe Modules</h1> | 
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|  | <p><span>Available Languages: </span><a href="../en/mod/module-dict.html" title="English"> en </a> | | 
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|  | </div> | 
|  |  | 
|  | <p>This document describes the terms that are used to describe | 
|  | each Apache <a href="./">module</a>.</p> | 
|  | </div> | 
|  | <div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#Description">Description</a></li> | 
|  | <li><img alt="" src="../images/down.gif" /> <a href="#Status">Status</a></li> | 
|  | <li><img alt="" src="../images/down.gif" /> <a href="#SourceFile">Source File</a></li> | 
|  | <li><img alt="" src="../images/down.gif" /> <a href="#ModuleIdentifier">Module Identifier</a></li> | 
|  | <li><img alt="" src="../images/down.gif" /> <a href="#Compatibility">Compatibility</a></li> | 
|  | </ul></div> | 
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|  | <div class="section"> | 
|  | <h2><a name="Description" id="Description">Description</a></h2> | 
|  |  | 
|  | <p>A brief description of the purpose of the module.</p> | 
|  | </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> | 
|  | <div class="section"> | 
|  | <h2><a name="Status" id="Status">Status</a></h2> | 
|  |  | 
|  | <p>This indicates how tightly bound into the Apache Web server | 
|  | the module is; in other words, you may need to recompile the | 
|  | server in order to gain access to the module and its | 
|  | functionality. Possible values for this attribute are:</p> | 
|  |  | 
|  | <dl> | 
|  | <dt>MPM</dt> | 
|  |  | 
|  | <dd>A module with status "MPM" is a <a href="../mpm.html">Multi-Processing Module</a>. Unlike the | 
|  | other types of modules, Apache must have one and only one MPM | 
|  | in use at any time. This type of module is responsible for | 
|  | basic request handling and dispatching.</dd> | 
|  |  | 
|  | <dt>Base</dt> | 
|  |  | 
|  | <dd>A module labeled as having "Base" status is compiled and | 
|  | loaded into the server by default, and is therefore normally | 
|  | available unless you have taken steps to remove the module | 
|  | from your configuration.</dd> | 
|  |  | 
|  | <dt>Extension</dt> | 
|  |  | 
|  | <dd>A module with "Extension" status is not normally compiled | 
|  | and loaded into the server. To enable the module and its | 
|  | functionality, you may need to change the server build | 
|  | configuration files and re-compile Apache.</dd> | 
|  |  | 
|  | <dt>Experimental</dt> | 
|  |  | 
|  | <dd>"Experimental" status indicates that the module is | 
|  | available as part of the Apache kit, but you are on your own | 
|  | if you try to use it. The module is being documented for | 
|  | completeness, and is not necessarily supported.</dd> | 
|  |  | 
|  | <dt>External</dt> | 
|  |  | 
|  | <dd>Modules which are not included with the base Apache | 
|  | distribution ("third-party modules") may use the "External" | 
|  | status. We are not responsible for, nor do we support such | 
|  | modules.</dd> | 
|  | </dl> | 
|  | </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> | 
|  | <div class="section"> | 
|  | <h2><a name="SourceFile" id="SourceFile">Source File</a></h2> | 
|  |  | 
|  | <p>This quite simply lists the name of the source file which | 
|  | contains the code for the module. This is also the name used by | 
|  | the <code class="directive"><a href="../mod/core.html#ifmodule"><IfModule></a></code> | 
|  | directive.</p> | 
|  | </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> | 
|  | <div class="section"> | 
|  | <h2><a name="ModuleIdentifier" id="ModuleIdentifier">Module Identifier</a></h2> | 
|  |  | 
|  | <p>This is a string which identifies the module for use in the | 
|  | <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code> directive when | 
|  | dynamically loading modules. In particular, it is the name of | 
|  | the external variable of type module in the source file.</p> | 
|  | </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> | 
|  | <div class="section"> | 
|  | <h2><a name="Compatibility" id="Compatibility">Compatibility</a></h2> | 
|  |  | 
|  | <p>If the module was not part of the original Apache version 2 | 
|  | distribution, the version in which it was introduced should be | 
|  | listed here.  In addition, if the module is limited to | 
|  | particular platforms, the details will be listed here.</p> | 
|  | </div></div> | 
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|  | <p class="apache">Copyright 2011 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> | 
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