Walk mode: ↑ ↓ move, ← → turn (or W A S D), drag to look around, keys 1 / 2 / 3 = ground / first floor / terrace, Esc to exit.
Layers ▸
Measure
Click two points on the house to measure. Esc clears.
Rooms ▸
Edit the SPEC block at the top of this file to change any dimension. Right wall follows the slanted plot boundary. Window sizes/positions are defaults, not from the drawings.