Interesting comments from an ex Xara employee.

[Soquili]

Mouse Wheel = scroll up and down
Shift + Mouse Wheel = scroll left and right
Ctrl + Mouse Wheel = Zoom in and out

I don't see any changes needed for the Mouse Wheel. Many features appear to be available but unknown.

[-=Drifter=-]

Thanks (again) Bill. I had totally forgotten about the shift/mouse to scroll left and right. The wheel on my mouse when pushed left or right does that, but sometimes is kind of finicky. Thanks