Cutting a track in half
This function enables you, for example, to keep only the valid part of a track.
Note: you can not modify the track during saving.
Select the Cut tool
by clicking it in the Tools palette, then on click the point of the track
after which you wish to cut the track.
You can now erase one of the parts of the track, as explained in the above
paragraph, in order to keep only the valid part.