drag rotate · scroll zoom · red △ = north

V walk mode: WASD move · Shift run · Space jump

C free the mouse for the UI (view stays) · click view or C resumes

drag window blind · E/click grab/place · R rotate carried · drag Leinwand roll

B IVAR editor: 1 strut · 2 board · E place/toggle · X remove · R rotate (auto-aligns to walls)