Admin Forum:Does there exist an magic word for $wgLang?

I was wondering if there exist an magic word for $wgLang? In theory the magic word would be: or or even simple Can someone help me with this please. --Jens Ingels (talk) 19:46, February 26, 2013 (UTC)
 * --PedroM 10:07, March 1, 2013 (UTC)