The mod_include Module

The mod_include module is now implemented as a filter and is therefore enabled differently. Refer to Section 10.2.4, “Modules and Apache HTTP Server 2.0” for more about filters.
For example, the following is a sample Apache HTTP Server 1.3 directive:
AddType text/html .shtml
AddHandler server-parsed .shtml
To migrate this setting to Apache HTTP Server 2.0, use the following structure:
AddType text/html .shtml
AddOutputFilter INCLUDES .shtml
Note that the Options +Includes directive is still required for the <Directory> container or in a .htaccess file.
For more on this topic, refer to the following documentation on the Apache Software Foundation's website: