chuck9012
When you bring up the menu, you will see "Clear tracks", this will clear them for you.
You can also save tracks for later use. Sometimes you will go over an area that you would like to repeat later. Unfortunately you cannot save a portion of the track, so if you know the area and can retrace it, clear the track and retrace the are you want and then save it. Sometimes I do this and make a recording at the same time to view later.
George