This video shows how the AutoCAD 2009 vertical Ribbon behaves when it is docked on one side. The labels explain what is going on.
The main thing that used to drive me batty with the Dashboard was the way in which expanding one panel would contract another. The vertical Ribbon doesn’t do that, it leaves panels how you left them, which I much prefer.
Something else you may have noticed is that when there is no docked horizontal Ribbon, the red A in the corner shrinks. I’ll describe what’s lurking beneath that A in future posts.