Legend


RTRight trigger (main)
LTLeft trigger
GRGrip button
PADPad button (touch) 
UUndo button
RRedo button



Pan: 

press and hold either left or right GR


Orbit: 

press both GR and "steer the wheel" (like a VR equivalent of Google Maps)


Zoom: 

press both GR and "pinch to zoom"  (like a VR equivalent of Google Maps)