Speed is adjustable by changing a constant, but the scrolling stops at the last 'window' of 6 characters. I haven't decided yet whether I want the whole message to scroll out of the display (by padding it with spaces), or whether it should start anew after some extra time. Any opinions on that?
I think I'll stop here for this evening -- it just can't get any better than this, so I better stop before it becomes worse. ;)