Board Thread:Support Requests - Getting Technical/@comment-24978757-20140717200701/@comment-26975268-20140717201404

That's actually not a template there, but instead in the page source itself: Contents More content...

With being a template containing just the list. The design for that can be found at w:c:runescape:MediaWiki:Common.css. Are you asking because you want to do something similar on another wiki?