Is it possible to swipe up on the magic mouse to widen tracks and swipe down to unwiden them?
Sorry, this is not possible. You can swipe left/right and up/down to scroll in the project. And you can hold down Cmd + swipe to Zoom In/Out, but not vertically.
Thanks Martin. Weird how you can hold down command and swipe for horizontal zoom but not hold for example option, for vertical zoom in and out.