Delete
Delete takes a walk or a point off the map. You are asked once, and the question says it can be undone.
Delete on a walk row takes that walk off the map. You are asked once. The question says its points and pictures leave the map, and that you can undo this from the history.
Delete on a point does the same for that point. A picture opened from a square, on the map or on the card beside the 3D view, has Delete too.
After the deletion the row stays in the list, struck through, with Undo. A message at the bottom of the map says Walk deleted. or Point deleted. and offers the same Undo.
Nothing is erased. A deleted walk or point no longer counts in the coverage or in the squares' alerts, but it stays stored.
These actions are held while you are looking at a past date.