Undo
Undo puts a deleted walk or point back as it was, from the history row or from the map.
Undo on a struck-through row puts that walk or that point back. The message at the bottom of the map offers the same Undo.
The walk or the point comes back as it was. It counts again in the coverage and in the squares' alerts.
Undo is available from today's map. While the strip shows a past date, come back to today first.