manual/mod/mod_include.html

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79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<blockquote><strong>Warning:</strong>
79b5ea592535186594ff19441a398acfc95704abyoshikiThis document has not been updated to take into account changes
79b5ea592535186594ff19441a398acfc95704abyoshikimade in the 2.0 version of the Apache HTTP Server.  Some of the
79b5ea592535186594ff19441a398acfc95704abyoshikiinformation may still be relevant, but please use it
79b5ea592535186594ff19441a398acfc95704abyoshikiwith care.
79b5ea592535186594ff19441a398acfc95704abyoshiki</blockquote>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<H1 ALIGN="CENTER">Module mod_include</H1>
79b5ea592535186594ff19441a398acfc95704abyoshiki
208651a016b098f4fa1f6279559f104d70f1632dtakashi<p>This module provides for server-parsed html documents.</p>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<P><A
79b5ea592535186594ff19441a398acfc95704abyoshikiHREF="module-dict.html#Status"
208651a016b098f4fa1f6279559f104d70f1632dtakashiREL="Help"
208651a016b098f4fa1f6279559f104d70f1632dtakashi><STRONG>Status:</STRONG></A> Base
79b5ea592535186594ff19441a398acfc95704abyoshiki<BR>
79b5ea592535186594ff19441a398acfc95704abyoshiki<A
208651a016b098f4fa1f6279559f104d70f1632dtakashiHREF="module-dict.html#SourceFile"
208651a016b098f4fa1f6279559f104d70f1632dtakashiREL="Help"
208651a016b098f4fa1f6279559f104d70f1632dtakashi><STRONG>Source File:</STRONG></A> mod_include.c
208651a016b098f4fa1f6279559f104d70f1632dtakashi<BR>
79b5ea592535186594ff19441a398acfc95704abyoshiki<A
79b5ea592535186594ff19441a398acfc95704abyoshikiHREF="module-dict.html#ModuleIdentifier"
208651a016b098f4fa1f6279559f104d70f1632dtakashiREL="Help"
208651a016b098f4fa1f6279559f104d70f1632dtakashi><STRONG>Module Identifier:</STRONG></A> includes_module
208651a016b098f4fa1f6279559f104d70f1632dtakashi</P>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<h2>Summary</h2>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<p>This module provides a handler which will process files before they
208651a016b098f4fa1f6279559f104d70f1632dtakashiare sent to the client.  The processing is controlled by specially
208651a016b098f4fa1f6279559f104d70f1632dtakashiformated SGML comments, referred to as <em>elements</em>.  These
208651a016b098f4fa1f6279559f104d70f1632dtakashielements allow conditional text, the inclusion other files or
79b5ea592535186594ff19441a398acfc95704abyoshikiprograms, as well as the setting and printing of environment
208651a016b098f4fa1f6279559f104d70f1632dtakashivariables.</p>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<H2>Directives</H2>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<UL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<LI><A HREF="#xbithack">XBitHack</A>
208651a016b098f4fa1f6279559f104d70f1632dtakashi</UL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<p>See also: <a href="core.html#options">Options</a>
79b5ea592535186594ff19441a398acfc95704abyoshikiand <a href="mod_mime.html#addhandler">AddHandler</a>.</p>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<H2>Enabling Server-Side Includes</H2>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashiAny document with handler of "server-parsed" will be parsed by this
208651a016b098f4fa1f6279559f104d70f1632dtakashimodule, if the <CODE>Includes</CODE> option is set. If documents
79b5ea592535186594ff19441a398acfc95704abyoshikicontaining server-side include directives are given the extension
208651a016b098f4fa1f6279559f104d70f1632dtakashi.shtml, the following directives will make Apache parse them and
208651a016b098f4fa1f6279559f104d70f1632dtakashiassign the resulting document the mime type of <CODE>text/html</CODE>:
208651a016b098f4fa1f6279559f104d70f1632dtakashi
79b5ea592535186594ff19441a398acfc95704abyoshiki<PRE>
79b5ea592535186594ff19441a398acfc95704abyoshikiAddType text/html .shtml
79b5ea592535186594ff19441a398acfc95704abyoshikiAddHandler server-parsed .shtml
79b5ea592535186594ff19441a398acfc95704abyoshiki</PRE>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshikiThe following directive must be given for the directories containing
79b5ea592535186594ff19441a398acfc95704abyoshikithe shtml files (typically in a <CODE>&lt;Directory&gt;</CODE> section,
79b5ea592535186594ff19441a398acfc95704abyoshikibut this directive is also valid .htaccess files if <CODE>AllowOverride
208651a016b098f4fa1f6279559f104d70f1632dtakashiOptions</CODE> is set):
208651a016b098f4fa1f6279559f104d70f1632dtakashi
79b5ea592535186594ff19441a398acfc95704abyoshiki<PRE>
79b5ea592535186594ff19441a398acfc95704abyoshikiOptions +Includes
79b5ea592535186594ff19441a398acfc95704abyoshiki</PRE>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshikiAlternatively the <A HREF="#xbithack"><CODE>XBitHack</CODE></A>
208651a016b098f4fa1f6279559f104d70f1632dtakashidirective can be used to parse normal (<CODE>text/html</CODE>) files,
208651a016b098f4fa1f6279559f104d70f1632dtakashibased on file permissions.  <P>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
79b5ea592535186594ff19441a398acfc95704abyoshikiFor backwards compatibility, documents with mime type
79b5ea592535186594ff19441a398acfc95704abyoshiki<CODE>text/x-server-parsed-html</CODE> or
208651a016b098f4fa1f6279559f104d70f1632dtakashi<CODE>text/x-server-parsed-html3</CODE> will also be parsed
208651a016b098f4fa1f6279559f104d70f1632dtakashi(and the resulting output given the mime type <CODE>text/html</CODE>).
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<H2>Basic Elements</H2>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashiThe document is parsed as an HTML document, with special commands embedded
79b5ea592535186594ff19441a398acfc95704abyoshikias SGML comments. A command has the syntax:
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshiki<BLOCKQUOTE><CODE>
79b5ea592535186594ff19441a398acfc95704abyoshiki&lt;!--#</CODE><EM>element attribute=value attribute=value ...</EM>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<CODE> --&gt;
79b5ea592535186594ff19441a398acfc95704abyoshiki</CODE></BLOCKQUOTE>
79b5ea592535186594ff19441a398acfc95704abyoshiki
79b5ea592535186594ff19441a398acfc95704abyoshikiThe value will often be enclosed in double quotes; many commands only allow
79b5ea592535186594ff19441a398acfc95704abyoshikia single attribute-value pair.  Note that the comment terminator
79b5ea592535186594ff19441a398acfc95704abyoshiki(<SAMP>--&gt;</SAMP>) should be preceded by whitespace to ensure that it
208651a016b098f4fa1f6279559f104d70f1632dtakashiisn't considered part of an SSI token.
208651a016b098f4fa1f6279559f104d70f1632dtakashi<P>
208651a016b098f4fa1f6279559f104d70f1632dtakashiThe allowed elements are:<P>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DT><STRONG>config</STRONG>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>
208651a016b098f4fa1f6279559f104d70f1632dtakashiThis command controls various aspects of the parsing. The valid attributes
208651a016b098f4fa1f6279559f104d70f1632dtakashiare:
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DT>errmsg
79b5ea592535186594ff19441a398acfc95704abyoshiki<DD>The value is a message that is sent back to the client if an error occurs
79b5ea592535186594ff19441a398acfc95704abyoshikiwhilst parsing the document.
79b5ea592535186594ff19441a398acfc95704abyoshiki<DT>sizefmt
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>The value sets the format to be used which displaying the size of a file.
208651a016b098f4fa1f6279559f104d70f1632dtakashiValid values are <CODE>bytes</CODE> for a count in bytes, or
79b5ea592535186594ff19441a398acfc95704abyoshiki<CODE>abbrev</CODE> for a count in Kb or Mb as appropriate.
79b5ea592535186594ff19441a398acfc95704abyoshiki<DT>timefmt
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>The value is a string to be used by the <CODE>strftime(3)</CODE> library
208651a016b098f4fa1f6279559f104d70f1632dtakashiroutine when printing dates.
208651a016b098f4fa1f6279559f104d70f1632dtakashi</DL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DT><STRONG><a name="echo">echo</a></STRONG>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>
208651a016b098f4fa1f6279559f104d70f1632dtakashiThis command prints one of the include variables, defined below.
208651a016b098f4fa1f6279559f104d70f1632dtakashiIf the variable is unset, it is printed as <CODE>(none)</CODE>.
208651a016b098f4fa1f6279559f104d70f1632dtakashiAny dates printed are subject to the currently configured <CODE>timefmt</CODE>.
208651a016b098f4fa1f6279559f104d70f1632dtakashi
79b5ea592535186594ff19441a398acfc95704abyoshikiAttributes:
79b5ea592535186594ff19441a398acfc95704abyoshiki<DL>
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DT>var
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>The value is the name of the variable to print.
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DT>encoding
208651a016b098f4fa1f6279559f104d70f1632dtakashi<DD>Specifies how Apache should encode special characters contained
208651a016b098f4fa1f6279559f104d70f1632dtakashiin the variable before outputting them.  If set to "none", no encoding
208651a016b098f4fa1f6279559f104d70f1632dtakashiwill be done.  If set to "url", then URL encoding (also known as
79b5ea592535186594ff19441a398acfc95704abyoshiki%-encoding; this is appropriate for use within URLs in links, etc.)
79b5ea592535186594ff19441a398acfc95704abyoshikiwill be performed.  At the start of an <CODE>echo</CODE> element,
79b5ea592535186594ff19441a398acfc95704abyoshikithe default is set to "entity", resulting in entity encoding (which
79b5ea592535186594ff19441a398acfc95704abyoshikiis appropriate in the context of a block-level HTML element, eg.
79b5ea592535186594ff19441a398acfc95704abyoshikia paragraph of text).  This can be changed by adding an
79b5ea592535186594ff19441a398acfc95704abyoshiki<CODE>encoding</CODE> attribute, which will remain in effect until
the next <CODE>encoding</CODE> attribute is encountered or the
element ends, whichever comes first.  Note that the
<CODE>encoding</CODE> attribute must <EM>precede</EM> the corresponding
<CODE>var</CODE> attribute to be effective, and that only special
characters as defined in the ISO-8859-1 character encoding will be
encoded.  This encoding process may not have the desired result if
a different character encoding is in use.
Apache 1.3.12 and above; previous versions do no encoding.

</DL>

<DT><STRONG>exec</STRONG>
<DD>
The exec command executes a given shell command or CGI script.
The IncludesNOEXEC <A HREF="core.html#options">Option</A> disables this command
completely. The valid attributes are:
<DL>
<DT>cgi
<DD>
The value specifies a (%-encoded) URL relative path to the CGI script.
If the path does not begin with a (/), then it is taken to be relative to
the current document. The document referenced by this path is invoked
as a CGI script, even if the server would not normally recognize it as
such. However, the directory containing the script must be enabled for
CGI scripts (with <A HREF="mod_alias.html#scriptalias">ScriptAlias</A>
or the ExecCGI <A HREF="core.html#options">Option</A>).<P>
The CGI script is given the PATH_INFO and query string (QUERY_STRING) of the
original request from the client; these cannot be specified in the URL path.
The include variables will be available to the script in addition to the
standard <A HREF="mod_cgi.html">CGI</A> environment.<P>
If the script returns a Location: header instead of output, then this
will be translated into an HTML anchor.<P>
The <CODE>include virtual</CODE> element should be used in preference to
<CODE>exec cgi</CODE>.
<DT>cmd
<DD>The server will execute the given string using <CODE>/bin/sh</CODE>.
The include variables are available to the command.
</DL>

<DT><STRONG>fsize</STRONG>
<DD>
This command prints the size of the specified file, subject to the
<CODE>sizefmt</CODE> format specification. Attributes:
<DL>
<DT>file
<DD>The value is a path relative to the directory containing the current
document being parsed.
<DT>virtual
<DD>The value is a (%-encoded) URL-path relative to the current document being
parsed. If it does not begin with a slash (/) then it is taken to be relative
to the current document.
</DL>

<DT><STRONG>flastmod</STRONG>
<DD>
This command prints the last modification date of the specified file,
subject to the <CODE>timefmt</CODE> format specification. The attributes are
the same as for the <CODE>fsize</CODE> command.

<DT><STRONG>include</STRONG>
<DD>
This command inserts the text of another document or file into the parsed
file. Any included file is subject to the usual access control. If the
directory containing the parsed file has the
<A HREF="core.html#options">Option</A>
IncludesNOEXEC set, and the including the document would cause a program
to be executed, then it will not be included; this prevents the execution of
CGI scripts. Otherwise CGI scripts are invoked as normal using the complete
URL given in the command, including any query string.
<!--%plaintext &lt;?INDEX CGI scripts, {\tt include} element and&gt; -->
<P>

An attribute defines the location of the document; the inclusion is done for
each attribute given to the include command. The valid attributes are:
<DL>
<DT>file
<DD>The value is a path relative to the directory containing the current
document being parsed. It cannot contain <CODE>../</CODE>, nor can it be an
absolute path. The <CODE>virtual</CODE> attribute should always be used
in preference to this one.
<DT>virtual
<DD>The value is a (%-encoded) URL relative to the current document being
parsed. The URL cannot contain a scheme or hostname, only a path and
an optional query string. If it does not begin with a slash (/) then it
is taken to be relative to the current document.
</DL>
A URL is constructed from the attribute, and the output the server
would return if the URL were accessed by the client is included in the parsed
output. Thus included files can be nested.

<DT><STRONG>printenv</STRONG>
<DD>This prints out a listing of all existing variables and their values.
   Starting with Apache 1.3.12, special characters are entity encoded (see the
   <A HREF="#echo"><CODE>echo</CODE></A> element for details) before being
   output.  No attributes.
<DD>For example: <CODE>&lt;!--#printenv --&gt;</CODE>
<DD>Apache 1.2 and above.

<DT><STRONG>set</STRONG>
<DD>This sets the value of a variable.  Attributes:
<DL>
<DT>var
<DD>The name of the variable to set.
<DT>value
<DD>The value to give a variable.
</DL>
For example:
  <CODE>&lt;!--#set var="category" value="help" --&gt;</CODE>
<DD>Apache 1.2 and above.

</DL>

<H2>Include Variables</H2>

In addition to the variables in the standard CGI environment, these are
available for the <CODE>echo</CODE> command, for <CODE>if</CODE> and
<CODE>elif</CODE>, and to any program invoked by the document.

<DL>
<DT>DATE_GMT
<DD>The current date in Greenwich Mean Time.
<DT>DATE_LOCAL
<DD>The current date in the local time zone.
<DT>DOCUMENT_NAME
<DD>The filename (excluding directories) of the document requested by the
user.
<DT>DOCUMENT_URI
<DD>The (%-decoded) URL path of the document requested by the user. Note that
in the case of nested include files, this is <EM>not</EM> then URL for the
current document.
<DT>LAST_MODIFIED
<DD>The last modification date of the document requested by the user.
</DL>
<P>

<H2>Variable Substitution</H2>
<P> Variable substitution is done within quoted strings in most cases
    where they may reasonably occur as an argument to an SSI directive.
    This includes the
    <SAMP>config</SAMP>,
    <SAMP>exec</SAMP>,
    <SAMP>flastmod</SAMP>,
    <SAMP>fsize</SAMP>,
    <SAMP>include</SAMP>, and
    <SAMP>set</SAMP>
    directives, as well as the arguments to conditional operators.
    You can insert a literal dollar sign into the string using backslash
    quoting:

<PRE>
    &lt;!--#if expr="$a = \$test" --&gt;
</PRE>

<P> If a variable reference needs to be substituted in the middle of a
    character sequence that might otherwise be considered a valid
    identifier in its own right, it can be disambiguated by enclosing
    the reference in braces, <EM>&agrave; la</EM> shell substitution:

<PRE>
    &lt;!--#set var="Zed" value="${REMOTE_HOST}_${REQUEST_METHOD}" --&gt;
</PRE>

<P> This will result in the <SAMP>Zed</SAMP> variable being set to
    &quot;<SAMP>X_Y</SAMP>&quot; if <SAMP>REMOTE_HOST</SAMP> is
    &quot;<SAMP>X</SAMP>&quot; and <SAMP>REQUEST_METHOD</SAMP> is
    &quot;<SAMP>Y</SAMP>&quot;.

<P> EXAMPLE: the below example will print "in foo" if the DOCUMENT_URI is
/foo/file.html, "in bar" if it is /bar/file.html and "in neither"
otherwise:
<PRE>
    &lt;!--#if expr="\"$DOCUMENT_URI\" = \"/foo/file.html\"" --&gt;
    in foo
    &lt;!--#elif expr="\"$DOCUMENT_URI\" = \"/bar/file.html\"" --&gt;
    in bar
    &lt;!--#else --&gt;
    in neither
    &lt;!--#endif --&gt;
</PRE>

<H2><A NAME="flowctrl">Flow Control Elements</A></H2>

These are available in Apache 1.2 and above.  The basic flow control
elements are:

<PRE>
    &lt;!--#if expr="<EM>test_condition</EM>" --&gt;
    &lt;!--#elif expr="<EM>test_condition</EM>" --&gt;
    &lt;!--#else --&gt;
    &lt;!--#endif --&gt;
</PRE>

<P> The <STRONG><CODE>if</CODE></STRONG> element works like an
    if statement in a programming language.  The test condition
    is evaluated and if the result is true, then the text until
    the next <STRONG><CODE>elif</CODE></STRONG>, <STRONG><CODE>else</CODE></STRONG>.
    or <STRONG><CODE>endif</CODE></STRONG> element is included in the
    output stream.

<P> The <STRONG><CODE>elif</CODE></STRONG> or <STRONG><CODE>else</CODE></STRONG>
    statements are be used the put text into the output stream
    if the original test_condition was false.  These elements
    are optional.

<P> The <STRONG><CODE>endif</CODE></STRONG> element ends the
    <STRONG><CODE>if</CODE></STRONG> element and is required.

<P> <EM>test_condition</EM> is one of the following:

<DL>

<DT><EM>string</EM><DD>true if <EM>string</EM> is not empty

<DT><EM>string1</EM> = <EM>string2</EM>
    <BR>
    <EM>string1</EM> != <EM>string2</EM>
    <BR>
    <EM>string1</EM> &lt; <EM>string2</EM>
    <BR>
    <EM>string1</EM> &lt;= <EM>string2</EM>
    <BR>
    <EM>string1</EM> &gt; <EM>string2</EM>
    <BR>
    <EM>string1</EM> &gt;= <EM>string2</EM>

<DD>Compare string1 with string 2.  If string2 has the form <EM>/string/</EM>
    then it is compared as a regular expression.
    Regular expressions have the same syntax as those found in the
    Unix <SAMP>egrep</SAMP> command.

<DT>( <EM>test_condition</EM> )
        <DD>true if <EM>test_condition</EM> is true
<DT>! <EM>test_condition</EM>
        <DD>true if <EM>test_condition</EM> is false
<DT><EM>test_condition1</EM> && <EM>test_condition2</EM>
        <DD>true if both <EM>test_condition1</EM> and
        <EM>test_condition2</EM> are true
<DT><EM>test_condition1</EM> || <EM>test_condition2</EM>
        <DD>true if either <EM>test_condition1</EM> or
        <EM>test_condition2</EM> is true
</DL>

<P> "<EM>=</EM>" and "<EM>!=</EM>" bind more tightly than "<EM>&&</EM>" and
    "<EM>||</EM>".
    "<EM>!</EM>" binds most tightly.  Thus, the following are equivalent:

<PRE>
    &lt;!--#if expr="$a = test1 && $b = test2" --&gt;
    &lt;!--#if expr="($a = test1) && ($b = test2)" --&gt;
</PRE>

<P> Anything that's not recognized as a variable or an operator is
    treated as a string.  Strings can also be quoted: <EM>'string'</EM>.
    Unquoted strings can't contain whitespace (blanks and tabs)
    because it is used to separate tokens such as variables.  If
    multiple strings are found in a row, they are concatenated using
    blanks.  So,

<PRE>
     <EM>string1    string2</EM>  results in <EM>string1 string2</EM>
    <EM>'string1    string2'</EM> results in <EM>string1    string2</EM>
</PRE>

<H2>Using Server Side Includes for ErrorDocuments</H2>

There is <A HREF="/misc/custom_errordocs.html">a document</A> which
describes how to use the features of mod_include to offer internationalized
customized server error documents.
<P>

<HR>

<H2><A NAME="xbithack">XBitHack</A> directive</H2>
<!--%plaintext &lt;?INDEX {\tt XBitHack} directive&gt; -->
<A
 HREF="directive-dict.html#Syntax"
 REL="Help"
><STRONG>Syntax:</STRONG></A> XBitHack on|off|full<BR>
<A
 HREF="directive-dict.html#Default"
 REL="Help"
><STRONG>Default:</STRONG></A> <CODE>XBitHack off</CODE><BR>
<A
 HREF="directive-dict.html#Context"
 REL="Help"
><STRONG>Context:</STRONG></A> server config, virtual host, directory, .htaccess<BR>
<A
 HREF="directive-dict.html#Override"
 REL="Help"
><STRONG>Override:</STRONG></A> Options<BR>
<A
 HREF="directive-dict.html#Status"
 REL="Help"
><STRONG>Status:</STRONG></A> Base<BR>
<A
 HREF="directive-dict.html#Module"
 REL="Help"
><STRONG>Module:</STRONG></A> mod_include<P>

The XBitHack directives controls the parsing of ordinary html documents.
This directive only affects files associated with the MIME type
<CODE>text/html</CODE>.  XBitHack can take on the following values:
<DL>
<DT>off
<DD>No special treatment of executable files.
<DT>on
<DD>Any file that has the user-execute bit set will be treated as a
server-parsed html document.
<DT>full
<DD>As for <CODE>on</CODE> but also test the group-execute bit. If it
is set, then set the Last-modified date of the returned file to be the
last modified time of the file. If it is not set, then no last-modified date
is sent. Setting this bit allows clients and proxies to cache the result of
the request.
<P><STRONG>Note:</STRONG> you would not want to use this, for example, when you
<CODE>#include</CODE> a CGI that produces different output on each hit
(or potentially depends on the hit).
</DL>
<P>


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