Modifier Key	Left Button	Middle Button	Right Button	Scroll
None	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Zoom ZoomToMouse
Shift +	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Zoom ZoomToMouse
Ctrl +	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Zoom ZoomToMouse
Alt +	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Pan Zoom Roll Rotate MultiRotate ZoomToMouse	None Zoom ZoomToMouse