Quicktags in WP2.0

Hey!

I’ve searched both the web and the codex but I can’t seem to find any info on how quicktags.js works in WP2.0. I know it’s been moved into it’s own js folder but my modified quicktags.js file won’t work on 2.0. It worked fine under 1.5.
If there’s a plugin that lets you add custom editing tags I’d be happy to know about it!

You folks are wonderful ??