Some more work on UI drawing code, added a generic structure for how widgets will be defined. It's still a wrapper on top of old buttons. Docs follow still. Some visual improvements; - more button types supported (check render buttons) - pressed state is shown - better 'panel' triangle AA, and new divider style Still a lot of work here. I expect the next days/weeks to be much more coding too, had to catch up with a lot of other Blender stuff. There's more (excitement) going on than code. :)