Hold Ctrl
Activate navigation mode — mouse now controls the camera
Ctrl + Left-click drag
Orbit — rotate the camera around the insert
Ctrl + Right-click drag
Pan — shift the camera up / down / left / right
Ctrl + Scroll
Zoom in / out
Ctrl + ←↑→↓
Arrow keys orbit the camera in small steps
↺ Reset View
Snap back to the auto-fit view set when dimensions were entered
Release Ctrl
Exit navigation mode — click-and-drag dividers works again