Direction
Allows you to change the direction from which the image is viewed. You can use the buttons to pan to the left and right.
Roll
Allows you to roll the viewing angle of the image. You can use the buttons to roll to the left and right and return to the center.
Tilt
Allows you to tilt the viewing angle of the image. You can use the buttons to tilt up and down and return to the center.
Zoom
Allows you to change the viewing area of the image. You can use the buttons to zoom in and zoom out.