User blog comment:Sarah Manley/New Editor Scheduled for Sitewide Release/@comment-3148508-20110907211013/@comment-3388044-20110908040739

Okay, this is not a perfect source-mode solution, but it can be used for now to have a buffer at the bottom. If you are an Administrator, copy the file w:c:admintools:MediaWiki:Editpage-tos-summary to your wiki. Once installed, it will appear at the bottom of the editor. Open the editor, press the page down button before clicking in the edit area, and it will be there for the rest of your edit session.

Again, not a perfect solution, and it will certainly be improved upon by Wikia when the techies get to it in their priorities list, but for now it’s something.