Board Thread:Support Requests - Designing Your Wiki/@comment-4146635-20130624223048/@comment-1158325-20130626005213

Well, it depends on what you want to add. Here's a basic outline if you want to add another box mimicking the look of the ones already there. This would be added to MediaWiki:Wikia.js. To answer your question, an element is part of the page which is built with HTML. For example, I'm currently typing in a "textarea" element, and the WikiaRail is a "div" element. "#WikiaRail" means it has id="WikiaRail". If you're interested, there are lots of good sites which can teach you how HTML works.