When a user access Special:MyPage/global.js, MediaWiki could add a page indicators with a help link, similar to the one which appears on Special:Watchlist:
$something->addHelpLink( 'Help:Extension:GlobalCssJs' );
Same thing for Special:MyPage/global.css.
Change 230578 had a related patch set uploaded (by Legoktm):
Should we display the indicator if you are viewing your own global.js/css page? Or anyone's global.js/css page?
I think anyone's is better, since the presence of such a link is not harmful (at most, the user will ignore it if he doesn't think the link is relevant)
Change 230578 merged by jenkins-bot: