Manual talk:$wgUseSiteCss

Insufficient documentation
An explanation for this variable is missing. The reference to "See MediaWiki:Common.css" is not helping. Is "MediaWiki:Common.css" equal or different to the "site's stylesheets"? --G.Hagedorn 13:04, 12 March 2009 (UTC)

Second
I agree, this documentation is severely Lacking

Upvoted
I'm having trouble with common.css. Was hoping this variable might do something. Seems there is no way to tell what the hell it is for.