Board Thread:Support Requests - Getting Technical/@comment-2213488-20130912184818/@comment-11733175-20130915014628

Special:MyPage/monobook.js is the monobook version of Special:MyPage/wikia.js, using that page will work fine.

This should pick up any changes to the edit area: You can add this to either your monobook.js or your Special:MyPage/global.js here on central for it to apply to every wiki when you're using monobook.