Variants on the same map, switchable — no more laying drawings side by side.

The Variants Map shows all design variants on the same map, switchable per variant. Switching between A and B immediately reveals what changes — at the same location, at the same scale, without having to remember anything. The rationale — trade-offs, constraints, starting points — is embedded as a layer in the map itself, not as an appendix. Whoever wants to know why variant C makes a bend here finds the answer at the spot where the question arises.