Manual:$wgEnableCreativeCommonsRdf

Details
Toggles the inclusion of [http://creativecommons.org/technology/metadata/ Creative Commons RDF metadata] in page output. See RDF Metadata at Metawiki for more information.

In MediaWiki 1.8.2, the source file  contains   which calls   to add Creative Commons metadata when   evaluates true, with title Creative Commons and type , containing an embedded URL with query item.

When MediaWiki serves a page request with query item  present,   is called within source file   which parses  into metadata format.