Verified
Z-Mouse:
a) It includes three buttons:
b) Thumb wheel on side, track ball over the top, and the standard mouse ball at bottom.
c) This design permits the six degrees of freedom in order to select the object from spatial position.
d) With this we may pick up an object, revolve it and it can be moved in any direction.
e) It is used within the virtual reality and the CAD systems.