I am just about getting to know how to delete previous Sat Nav destinations. But sometimes, the Sat Nav thinks I want to go to the destination when I touch it to delete it and it starts up again. I can't seem to find a way to tell it to stop so that I can try to delete it again without switching the whole thing off, waiting for 20 minutes than trying again. Is there a simple way to tell it to stop and that I don't want to go to the destination again? Thanks.

When following a route, even if by mistake, top left corner is a stop button, it becomes visible when your hand hovers over the screen. If you want to delete a destination: touch and drag left (I think) and a red delete button becomes visible. You can also “escape” from a route by pressing the Nav button.