Cheat sheet

Common
Open file: Ctrl/Cmd-o.
Exit application: Ctrl/Cmd-q

Save selection: Ctrl/Cmd-s

2D/3D Navigation
Zoom: Hold right mouse button

Move crosshair: Left mouse button

Translate: Middle mouse button

Selection object
Move: Hold Ctrl/Cmd + Left mouse button

Resize: Hold Ctrl/Cmd + Right mouse button

Rotate: Hold Ctrl/Cmd + Middle mouse button

3D view

Anterior: a

Posterior: p

Left: l

Right: r

Superior: s

Interior: i