SSIEndTag tag 
Default: SSIEndTag " -- >" 
Context: Server config, virtual host 

This directive changes the string that mod_include looks for to mark the end of an include element.

Example

SSIEndTag "%>"  

SSIStartTag message
Default: SSIStartTag "<! -- " 
Context: Server config, virtual host 

This directive changes the string that mod_include looks for to mark an include element to process. You may want to use this option if you have two servers parsing the output of a file each processing different commands (possibly at different times).

Example

SSIStartTag "<%"  

This example, in conjunction with a matching SSIEndTag, will allow you to use SSI directives as shown in the following example (SSI directives with alternate start and end tags):

<%#printenv %>  

XBitHack on|off|full 
Default: XBitHack off 
Context: Server config, virtual host, directory, .htaccess 

The XBitHack directive controls the parsing of ordinary HTML documents. This directive only affects files associated with the MIME type text/html. XBitHack can take on the following values:

off

This offers no special treatment of executable files.

on

Any text/html file that has the user-execute bit set will be treated as a server-parsed HTML document.

full

As for on 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.

TIP: You would not want to use the full option unless you assure the group-execute bit is unset for every SSI script that might include a CGI or otherwise produces different output on each hit (or could potentially change on subsequent requests).