Apache Reference: mod_include, XBitHack
Treat Ordinary HTML Documents as SSI Documents
Syntax: XBitHack A
Example: XBitHack full
Since: Apache 1.0
This directive controls the parsing of ordinary HTML documents
if the execution bit is set on them. It affects only files
associated with the MIME type text/html. The mode
argument can have the following values: ``off'' for no special
treatment of executable files; ``on'' for treatment of any file
that has the user-execute bit set as a server-parsed HTML
document (SSI); or ``full'' for the same as ``on'', plus
testing of the group-execute bit. If the latter bit is set, then
the HTTP ``Last-Modi==fied'' date of the returned file is set to be
the last modified time of the file. If the group-execute bit is not set, then no
``Last-Modified'' date is set. Setting this bit allows clients
and proxies to cache the result of the request.