+ 'wikibooks' => new Site( 'wikibooks', 'b', 'wikibooks.org' ),
+ 'wikinews' => new Site( 'wikinews', 'n', 'wikinews.org' ),
+ 'wikisource' => new Site( 'wikisource', 's', 'wikisource.org' ),
+ 'wikimedia' => new Site( 'wikimedia', 'chapter', 'wikimedia.org' ),
+ 'wikiversity' => new Site( 'wikiversity', 'v', 'wikiversity.org' ),