The flat being bought, on the top floorFloor plates on the screw, one drawer per flatFences on the acre grid: the plotTurning the crown screws floor plates onto the column, each carrying one drawer per flat around the lift core, while the two fences slide out over the acre grid; the readout divides the drawers by the land inside the fences. On the tour it quotes each project's listed count; touch a knob and it counts the drawers instead.