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     <p>This document describes the terms that are used to describe
     each Apache <a href="directives.html">configuration
     directive</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="#Syntax">Syntax</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Default">Default</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Context">Context</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Override">Override</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Status">Status</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Module">Module</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#Compatibility">Compatibility</a></li>
 </ul><h3>See also</h3><ul class="seealso"><li><a href="../configuring.html">Configuration files</a></li><li><a href="#comments_section">Comments</a></li></ul></div>
 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="Description" id="Description">Description</a></h2>

 <p>A brief description of the purpose of the 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="Syntax" id="Syntax">Syntax</a></h2>

     <p>This indicates the format of the directive as it would
     appear in a configuration file. This syntax is extremely
     directive-specific, and is described in detail in the
     directive's definition. Generally, the directive name is
     followed by a series of one or more space-separated arguments.
     If an argument contains a space, the argument must be enclosed
     in double quotes. Optional arguments are enclosed in square
     brackets. Where an argument can take on more than one possible
     value, the possible values are separated by vertical bars "|".
     Literal text is presented in the default font, while
     argument-types for which substitution is necessary are
     <em>emphasized</em>. Directives which can take a variable
     number of arguments will end in "..." indicating that the last
     argument is repeated.</p>

     <p>Directives use a great number of different argument types. A
     few common ones are defined below.</p>

     <dl>
       <dt><em>URL</em></dt>

       <dd>A complete Uniform Resource Locator including a scheme,
       hostname, and optional pathname as in
       <code>http://www.example.com/path/to/file.html</code></dd>

       <dt><em>URL-path</em></dt>

       <dd>The part of a <em>url</em> which follows the scheme and
       hostname as in <code>/path/to/file.html</code>. The
       <em>url-path</em> represents a web-view of a resource, as
       opposed to a file-system view.</dd>

       <dt><em>file-path</em></dt>

       <dd>The path to a file in the local file-system beginning
       with the root directory as in
       <code>/usr/local/apache/htdocs/path/to/file.html</code>.
       Unless otherwise specified, a <em>file-path</em> which does
       not begin with a slash will be treated as relative to the <a href="core.html#serverroot">ServerRoot</a>.</dd>

       <dt><em>directory-path</em></dt>

       <dd>The path to a directory in the local file-system
       beginning with the root directory as in
       <code>/usr/local/apache/htdocs/path/to/</code>.</dd>

       <dt><em>filename</em></dt>

       <dd>The name of a file with no accompanying path information
       as in <code>file.html</code>.</dd>

       <dt><em>regex</em></dt>

       <dd>A Perl-compatible <a class="glossarylink" href="../glossary.html#regex" title="see glossary">regular
       expression</a>. The directive definition will specify what the
       <em>regex</em> is matching against.</dd>

       <dt><em>extension</em></dt>

       <dd>In general, this is the part of the <em>filename</em>
       which follows the last dot. However, Apache recognizes
       multiple filename extensions, so if a <em>filename</em>
       contains more than one dot, each dot-separated part of the
       filename following the first dot is an <em>extension</em>.
       For example, the <em>filename</em> <code>file.html.en</code>
       contains two extensions: <code>.html</code> and
       <code>.en</code>. For Apache directives, you may specify
       <em>extension</em>s with or without the leading dot. In
       addition, <em>extension</em>s are not case sensitive.</dd>

       <dt><em>MIME-type</em></dt>

       <dd>A method of describing the format of a file which
       consists of a major format type and a minor format type,
       separated by a slash as in <code>text/html</code>.</dd>

       <dt><em>env-variable</em></dt>

       <dd>The name of an <a href="../env.html">environment
       variable</a> defined in the Apache configuration process.
       Note this is not necessarily the same as an operating system
       environment variable. See the <a href="../env.html">environment variable documentation</a> for
       more details.</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="Default" id="Default">Default</a></h2>

     <p>If the directive has a default value (<em>i.e.</em>, if you
     omit it from your configuration entirely, the Apache Web server
     will behave as though you set it to a particular value), it is
     described here. If there is no default value, this section
     should say "<em>None</em>". Note that the default listed here
     is not necessarily the same as the value the directive takes in
     the default httpd.conf distributed with the server.</p>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="Context" id="Context">Context</a></h2>

     <p>This indicates where in the server's configuration files the
     directive is legal. It's a comma-separated list of one or more
     of the following values:</p>

     <dl>
       <dt>server config</dt>

       <dd>This means that the directive may be used in the server
       configuration files (<em>e.g.</em>, <code>httpd.conf</code>), but
       <strong>not</strong> within any
       <code class="directive"><a href="../mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code>
       or <code class="directive"><a href="../mod/core.html#directory">&lt;Directory&gt;</a></code>
       containers. It is not allowed in <code>.htaccess</code> files
       at all.</dd>

       <dt>virtual host</dt>

       <dd>This context means that the directive may appear inside
       <code class="directive"><a href="../mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code>
       containers in the server
       configuration files.</dd>

       <dt>directory</dt>

       <dd>A directive marked as being valid in this context may be
       used inside <code class="directive"><a href="../mod/core.html#directory">&lt;Directory&gt;</a></code>, <code class="directive"><a href="../mod/core.html#location">&lt;Location&gt;</a></code>, <code class="directive"><a href="../mod/core.html#files">&lt;Files&gt;</a></code>, <code class="directive"><a href="../mod/core.html#if">&lt;If&gt;</a></code>, and <code class="directive"><a href="../mod/mod_proxy.html#proxy">&lt;Proxy&gt;</a></code> containers
       in the server configuration files, subject to the restrictions
       outlined in <a href="../sections.html">Configuration
       Sections</a>.</dd>

       <dt>.htaccess</dt>

       <dd>If a directive is valid in this context, it means that it
       can appear inside <em>per</em>-directory
       <code>.htaccess</code> files. It may not be processed, though
       depending upon the <a href="#Override">overrides</a> currently active.</dd>
     </dl>

     <p>The directive is <em>only</em> allowed within the designated
     context; if you try to use it elsewhere, you'll get a
     configuration error that will either prevent the server from
     handling requests in that context correctly, or will keep the
     server from operating at all -- <em>i.e.</em>, the server won't
     even start.</p>

     <p>The valid locations for the directive are actually the
     result of a Boolean OR of all of the listed contexts. In other
     words, a directive that is marked as being valid in
     "<code>server config, .htaccess</code>" can be used in the
     <code>httpd.conf</code> file and in <code>.htaccess</code>
     files, but not within any <code class="directive"><a href="../mod/core.html#directory">&lt;Directory&gt;</a></code> or
     <code class="directive"><a href="../mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code>
     containers.</p>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="Override" id="Override">Override</a></h2>

     <p>This directive attribute indicates which configuration
     override must be active in order for the directive to be
     processed when it appears in a <code>.htaccess</code> file. If
     the directive's <a href="#Context">context</a>
     doesn't permit it to appear in <code>.htaccess</code> files,
     then no context will be listed.</p>

     <p>Overrides are activated by the <code class="directive"><a href="../mod/core.html#allowoverride">AllowOverride</a></code> directive, and apply
     to a particular scope (such as a directory) and all
     descendants, unless further modified by other
     <code class="directive"><a href="../mod/core.html#allowoverride">AllowOverride</a></code> directives at
     lower levels. The documentation for that directive also lists the
     possible override names available.</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 directive is; in other words, you may need to recompile the
     server with an enhanced set of modules in order to gain access
     to the directive and its functionality. Possible values for
     this attribute are:</p>

     <dl>
       <dt>Core</dt>

       <dd>If a directive is listed as having "Core" status, that
       means it is part of the innermost portions of the Apache Web
       server, and is always available.</dd>

       <dt>MPM</dt>

       <dd>A directive labeled as having "MPM" status is provided by
       a <a href="../mpm.html">Multi-Processing Module</a>. This
       type of directive will be available if and only if you are
       using one of the MPMs listed on the <a href="#Module">Module</a> line of the directive
       definition.</dd>

       <dt>Base</dt>

       <dd>A directive labeled as having "Base" status is supported
       by one of the standard Apache modules which is compiled into
       the server by default, and is therefore normally available
       unless you've taken steps to remove the module from your
       configuration.</dd>

       <dt>Extension</dt>

       <dd>A directive with "Extension" status is provided by one of
       the modules included with the Apache server kit, but the
       module isn't normally compiled into the server. To enable the
       directive and its functionality, you will need to change the
       server build configuration files and re-compile Apache.</dd>

       <dt>Experimental</dt>

       <dd>"Experimental" status indicates that the directive is
       available as part of the Apache kit, but you're on your own
       if you try to use it. The directive is being documented for
       completeness, and is not necessarily supported. The module
       which provides the directive may or may not be compiled in by
       default; check the top of the page which describes the
       directive and its module to see if it remarks on the
       availability.</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="Module" id="Module">Module</a></h2>

     <p>This quite simply lists the name of the source module which
     defines the 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="Compatibility" id="Compatibility">Compatibility</a></h2>

     <p>If the directive wasn't part of the original Apache version
     2 distribution, the version in which it was introduced should
     be listed here.  In addition, if the directive is available
     only on certain platforms, it will be noted here.</p>
 </div></div>
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	<a href="../es/mod/directive-dict.html" hreflang="es" rel="alternate" title="Español"> es </a> \|
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	</div>

	<p>This document describes the terms that are used to describe
	each Apache <a href="directives.html">configuration
	directive</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="#Syntax">Syntax</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Default">Default</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Context">Context</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Override">Override</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Status">Status</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Module">Module</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#Compatibility">Compatibility</a></li>
	</ul><h3>See also</h3><ul class="seealso"><li><a href="../configuring.html">Configuration files</a></li><li><a href="#comments_section">Comments</a></li></ul></div>
	<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="Description" id="Description">Description</a></h2>

	<p>A brief description of the purpose of the 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="Syntax" id="Syntax">Syntax</a></h2>

	<p>This indicates the format of the directive as it would
	appear in a configuration file. This syntax is extremely
	directive-specific, and is described in detail in the
	directive's definition. Generally, the directive name is
	followed by a series of one or more space-separated arguments.
	If an argument contains a space, the argument must be enclosed
	in double quotes. Optional arguments are enclosed in square
	brackets. Where an argument can take on more than one possible
	value, the possible values are separated by vertical bars "\|".
	Literal text is presented in the default font, while
	argument-types for which substitution is necessary are
	<em>emphasized</em>. Directives which can take a variable
	number of arguments will end in "..." indicating that the last
	argument is repeated.</p>

	<p>Directives use a great number of different argument types. A
	few common ones are defined below.</p>

	<dl>
	<dt><em>URL</em></dt>

	<dd>A complete Uniform Resource Locator including a scheme,
	hostname, and optional pathname as in
	<code>http://www.example.com/path/to/file.html</code></dd>

	<dt><em>URL-path</em></dt>

	<dd>The part of a <em>url</em> which follows the scheme and
	hostname as in <code>/path/to/file.html</code>. The
	<em>url-path</em> represents a web-view of a resource, as
	opposed to a file-system view.</dd>

	<dt><em>file-path</em></dt>

	<dd>The path to a file in the local file-system beginning
	with the root directory as in
	<code>/usr/local/apache/htdocs/path/to/file.html</code>.
	Unless otherwise specified, a <em>file-path</em> which does
	not begin with a slash will be treated as relative to the <a href="core.html#serverroot">ServerRoot</a>.</dd>

	<dt><em>directory-path</em></dt>

	<dd>The path to a directory in the local file-system
	beginning with the root directory as in
	<code>/usr/local/apache/htdocs/path/to/</code>.</dd>

	<dt><em>filename</em></dt>

	<dd>The name of a file with no accompanying path information
	as in <code>file.html</code>.</dd>

	<dt><em>regex</em></dt>

	<dd>A Perl-compatible <a class="glossarylink" href="../glossary.html#regex" title="see glossary">regular
	expression</a>. The directive definition will specify what the
	<em>regex</em> is matching against.</dd>

	<dt><em>extension</em></dt>

	<dd>In general, this is the part of the <em>filename</em>
	which follows the last dot. However, Apache recognizes
	multiple filename extensions, so if a <em>filename</em>
	contains more than one dot, each dot-separated part of the
	filename following the first dot is an <em>extension</em>.
	For example, the <em>filename</em> <code>file.html.en</code>
	contains two extensions: <code>.html</code> and
	<code>.en</code>. For Apache directives, you may specify
	<em>extension</em>s with or without the leading dot. In
	addition, <em>extension</em>s are not case sensitive.</dd>

	<dt><em>MIME-type</em></dt>

	<dd>A method of describing the format of a file which
	consists of a major format type and a minor format type,
	separated by a slash as in <code>text/html</code>.</dd>

	<dt><em>env-variable</em></dt>

	<dd>The name of an <a href="../env.html">environment
	variable</a> defined in the Apache configuration process.
	Note this is not necessarily the same as an operating system
	environment variable. See the <a href="../env.html">environment variable documentation</a> for
	more details.</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="Default" id="Default">Default</a></h2>

	<p>If the directive has a default value (<em>i.e.</em>, if you
	omit it from your configuration entirely, the Apache Web server
	will behave as though you set it to a particular value), it is
	described here. If there is no default value, this section
	should say "<em>None</em>". Note that the default listed here
	is not necessarily the same as the value the directive takes in
	the default httpd.conf distributed with the server.</p>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="Context" id="Context">Context</a></h2>

	<p>This indicates where in the server's configuration files the
	directive is legal. It's a comma-separated list of one or more
	of the following values:</p>

	<dl>
	<dt>server config</dt>

	<dd>This means that the directive may be used in the server
	configuration files (<em>e.g.</em>, <code>httpd.conf</code>), but
	<strong>not</strong> within any
	<code class="directive"><a href="../mod/core.html#virtualhost"><VirtualHost></a></code>
	or <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code>
	containers. It is not allowed in <code>.htaccess</code> files
	at all.</dd>

	<dt>virtual host</dt>

	<dd>This context means that the directive may appear inside
	<code class="directive"><a href="../mod/core.html#virtualhost"><VirtualHost></a></code>
	containers in the server
	configuration files.</dd>

	<dt>directory</dt>

	<dd>A directive marked as being valid in this context may be
	used inside <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code>, <code class="directive"><a href="../mod/core.html#location"><Location></a></code>, <code class="directive"><a href="../mod/core.html#files"><Files></a></code>, <code class="directive"><a href="../mod/core.html#if"><If></a></code>, and <code class="directive"><a href="../mod/mod_proxy.html#proxy"><Proxy></a></code> containers
	in the server configuration files, subject to the restrictions
	outlined in <a href="../sections.html">Configuration
	Sections</a>.</dd>

	<dt>.htaccess</dt>

	<dd>If a directive is valid in this context, it means that it
	can appear inside <em>per</em>-directory
	<code>.htaccess</code> files. It may not be processed, though
	depending upon the <a href="#Override">overrides</a> currently active.</dd>
	</dl>

	<p>The directive is <em>only</em> allowed within the designated
	context; if you try to use it elsewhere, you'll get a
	configuration error that will either prevent the server from
	handling requests in that context correctly, or will keep the
	server from operating at all -- <em>i.e.</em>, the server won't
	even start.</p>

	<p>The valid locations for the directive are actually the
	result of a Boolean OR of all of the listed contexts. In other
	words, a directive that is marked as being valid in
	"<code>server config, .htaccess</code>" can be used in the
	<code>httpd.conf</code> file and in <code>.htaccess</code>
	files, but not within any <code class="directive"><a href="../mod/core.html#directory"><Directory></a></code> or
	<code class="directive"><a href="../mod/core.html#virtualhost"><VirtualHost></a></code>
	containers.</p>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="Override" id="Override">Override</a></h2>

	<p>This directive attribute indicates which configuration
	override must be active in order for the directive to be
	processed when it appears in a <code>.htaccess</code> file. If
	the directive's <a href="#Context">context</a>
	doesn't permit it to appear in <code>.htaccess</code> files,
	then no context will be listed.</p>

	<p>Overrides are activated by the <code class="directive"><a href="../mod/core.html#allowoverride">AllowOverride</a></code> directive, and apply
	to a particular scope (such as a directory) and all
	descendants, unless further modified by other
	<code class="directive"><a href="../mod/core.html#allowoverride">AllowOverride</a></code> directives at
	lower levels. The documentation for that directive also lists the
	possible override names available.</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 directive is; in other words, you may need to recompile the
	server with an enhanced set of modules in order to gain access
	to the directive and its functionality. Possible values for
	this attribute are:</p>

	<dl>
	<dt>Core</dt>

	<dd>If a directive is listed as having "Core" status, that
	means it is part of the innermost portions of the Apache Web
	server, and is always available.</dd>

	<dt>MPM</dt>

	<dd>A directive labeled as having "MPM" status is provided by
	a <a href="../mpm.html">Multi-Processing Module</a>. This
	type of directive will be available if and only if you are
	using one of the MPMs listed on the <a href="#Module">Module</a> line of the directive
	definition.</dd>

	<dt>Base</dt>

	<dd>A directive labeled as having "Base" status is supported
	by one of the standard Apache modules which is compiled into
	the server by default, and is therefore normally available
	unless you've taken steps to remove the module from your
	configuration.</dd>

	<dt>Extension</dt>

	<dd>A directive with "Extension" status is provided by one of
	the modules included with the Apache server kit, but the
	module isn't normally compiled into the server. To enable the
	directive and its functionality, you will need to change the
	server build configuration files and re-compile Apache.</dd>

	<dt>Experimental</dt>

	<dd>"Experimental" status indicates that the directive is
	available as part of the Apache kit, but you're on your own
	if you try to use it. The directive is being documented for
	completeness, and is not necessarily supported. The module
	which provides the directive may or may not be compiled in by
	default; check the top of the page which describes the
	directive and its module to see if it remarks on the
	availability.</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="Module" id="Module">Module</a></h2>

	<p>This quite simply lists the name of the source module which
	defines the 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="Compatibility" id="Compatibility">Compatibility</a></h2>

	<p>If the directive wasn't part of the original Apache version
	2 distribution, the version in which it was introduced should
	be listed here. In addition, if the directive is available
	only on certain platforms, it will be noted here.</p>
	</div></div>
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