Unlimited Undo and Redo

An unlimited undo and redo allows to safely modify the GPS data in positions and positions lists - and discard these changes by undoing them:

If undone changes can be reapplied again:

All operations on GPS data are affected by undo/redo:

• adding and removing positions
• editing positions in the position list
• completing positions with coordinates, elevation, address, speed, number
• adding, removing and renaming position lists
• inserting intermediate positions
• removing duplicate positions
• reversing position lists
• reordering position lists