1 2 Navigation: 3 left button: rotate around the target 4 middle button: zoom 5 left button + ctrl quake rotate (rotate around camera position) 6 middle button + ctrl walk (progress along camera's z direction) 7 left button: pan (translate in the XY camera's plane) 8 9 R : move the camera to initial position 10 A : start/stop animation 11 C : clear the animation 12 G : add a key frame 13 14