Apache Reference: mod_mime, AddLanguage

AddLanguage

Associate MIME Content Language with File Extension
Syntax: AddLanguage mime-lang file-ext [file-ext ...]
Example: AddLanguage de .de
Since: Apache 1.0

This directive maps a given file name extension file-ext to the specified MIME content language mime-lang one or more times. The mime-lang argument is the MIME language of documents with the specified extension. This mapping is added to any already in force, and it overrides any existing mappings for the same extension.