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8 <title>Definitions of terms used to describe Apache
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17 <h1 align="CENTER">Terms Used to Describe Apache Modules</h1>
19 <p>Each Apache module is described using a common format that
23 <dd><a href="#Status" rel="Help"><strong>Status:</strong></a>
25 <a href="#SourceFile" rel="Help"><strong>Source
26 File:</strong></a> <em>source-file</em><br />
27 <a href="#ModuleIdentifier" rel="Help"><strong>Module
28 Identifier:</strong></a> <em>module-identifier</em><br />
29 <a href="#Compatibility"
30 rel="Help"><strong>Compatibility:</strong></a>
31 <em>compatibility notes</em></dd>
34 <p>Each of the attributes, complete with values where possible,
35 are described in this document.</p>
40 <li><a href="#Status">Status</a></li>
42 <li><a href="#SourceFile">Source File</a></li>
44 <li><a href="#ModuleIdentifier">Module Identifier</a></li>
46 <li><a href="#Compatibility">Compatibility</a></li>
50 <h2><a id="Status" name="Status">Status</a></h2>
52 <p>This indicates how tightly bound into the Apache Web server
53 the module is; in other words, you may need to recompile the
54 server in order to gain access to the module and its
55 functionality. Possible values for this attribute are:</p>
58 <dt><strong>MPM</strong></dt>
60 <dd>A module with status "MPM" is a <a
61 href="../mpm.html">Multi-Processing Module</a>. Unlike the
62 other types of modules, Apache must have one and only one MPM
63 in use at any time. This type of module is responsible for
64 basic request handling and dispatching.</dd>
66 <dt><strong>Base</strong></dt>
68 <dd>A module labeled as having "Base" status is compiled and
69 loaded into the server by default, and is therefore normally
70 available unless you have taken steps to remove the module
71 from your configuration.</dd>
73 <dt><strong>Extension</strong></dt>
75 <dd>A module with "Extension" status is not normally compiled
76 and loaded into the server. To enable the module and its
77 functionality, you may need to change the server build
78 configuration files and re-compile Apache.</dd>
80 <dt><strong>Experimental</strong></dt>
82 <dd>"Experimental" status indicates that the module is
83 available as part of the Apache kit, but you are on your own
84 if you try to use it. The module is being documented for
85 completeness, and is not necessarily supported.</dd>
87 <dt><strong>External</strong></dt>
89 <dd>Modules which are not included with the base Apache
90 distribution ("third-party modules") may use the "External"
91 status. We are not responsible for, nor do we support such
96 <h2><a id="SourceFile" name="SourceFile">Source File</a></h2>
98 <p>This quite simply lists the name of the source file which
99 contains the code for the module. This is also the name used by
101 href="core.html#ifmodule"><code><IfModule></code></a>
105 <h2><a id="ModuleIdentifier" name="ModuleIdentifier">Module
108 <p>This is a string which identifies the module for use in the
109 <a href="mod_so.html#loadmodule">LoadModule</a> directive when
110 dynamically loading modules. In particular, it is the name of
111 the external variable of type module in the source file.</p>
114 <h2><a id="Compatibility"
115 name="Compatibility">Compatibility</a></h2>
117 <p>If the module was not part of the original Apache version 2
118 distribution, the version in which it was introduced should be
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