Placing Objects:
1. Click to place object
2. Press Arrow Keys to rotate
3. Press +/- to scale
4. Click to confirm placement
Editing Objects:
5. Click to select an object
6. Use Arrow Keys to rotate selection
7. Use +/- to resize
8. Hold Shift + drag to move vertically
9. Press Delete to remove
Camera Controls:
10. Hold Space + drag to pan
11. Scroll to zoom in/out