Walk1 — click the view to look around with the mouse (or drag). W A S D move, Shift run, Q/E crouch and stand. On a phone use the joystick and drag to look.
Orbit2 — doll's-house view, roof off. Drag to turn, scroll to zoom, right-drag to pan.
Plan3 — top-down. Toggle the agent's floor plan overlay in Scene.
MeasureM — click points on any surface. Each segment and a running total in metres; Enter closes a loop and gives the area.
SetsB — pick a prop, then click the floor to place it (Shift-click for several). Drag any prop to slide it around; it sits on risers and tables. [] turn 15°, arrow keys nudge, ⌘D duplicate, ⌫ delete, ⌘Z undo, F focus. TRX switch the handles to move, rotate or scale. Lights really light the room; cameras can be looked through.
Getting around — the buttons at the bottom jump to either suite. In Orbit and Plan, W A S D pan and double-click the floor to fly there.
Scene — time of day, strip lights, grid, plan overlay, dimension lines, real measurements.
Share — copies a link that carries your current layout.
Export — a high-resolution render of the current view (or through any camera you placed), and a to-scale blueprint of the set as PNG or SVG.