I find translate page for wiki.

img: http://goo.gl/oXDGt2

May be...

This use...

img: http://goo.gl/fElejJ

and 

Img: http://goo.gl/Y0eu1w

Media wiki help page : https://www.mediawiki.org/wiki/Project:Language_policy

I don't know use this function.

Where can ask using this function??

Thanks,

Sungjin.