When tracing a polygon, area, etc... Let's say for example I'm figuring the area of a driveway. I click my first point and move clockwise around the driveway, but then Oops! I clicked a point in a wrong spot. Is there a key command to delete my last point, without having to start tracing all over?
Also, it is annoying as hell that when I zoom in with the scroll wheel, it centers the screen on my cursor. Is there a way to disable this? I have not found a way in the help or settings.