The list of stones
At the Stones step, every boundary stone is listed with its coordinates and the lots it separates. Walk there gives the distance and the direction, on foot.
Planted, and moved
Tick Planted once a stone is in the ground; the count shows how many remain. If the division changes after that, a stone that moves is flagged Moved since planting: plant it again. The position comes from the phone's GPS, a few meters off: a surveyor fixes the final marks.

