Some type of scrolling support.
Ideally scrollable areas should if possible be large enough to be show all contents without scrolling, but allow resizing. With the current sizing mechanisms, it should be possible to have a resizable widget with a minimal size (smallest widget showing scrollbars?) which hides scroll bars if large enough, but doesn't automatically try to take full size. #10 should allow this.
Appearance/interaction:
- Fading edges to indicate more content within a scrollable area, hard edges when at edge of scrolling area?
- scroll-wheels/touchpad and dragging interaction
- old-style scroll bars, perhaps optional since the above should remove the need for them
