| Navigation: | |
| left button: rotate around the target | |
| middle button: zoom | |
| left button + ctrl quake rotate (rotate around camera position) | |
| middle button + ctrl walk (progress along camera's z direction) | |
| left button: pan (translate in the XY camera's plane) | |
| R : move the camera to initial position | |
| A : start/stop animation | |
| C : clear the animation | |
| G : add a key frame | |