Click a cube — take it out (panel on the right)
In panel: click — spin (A) · right-click — tip (W) WASD / arrows / Q/E — rotate · Shift+ same — move selection Drag a cube — quick rotate · Esc — put back Drag background — orbit · scroll — zoom Flat view / O · Front/Top/Side snap — easier to read Middle-click / L — lock in place · Ctrl+Z undo
click — spin · right-click — tip · WASD/Q/E · Esc puts it back