Submitted by Ray Cook – November 25, 2002
2. The zones are 3D and vary according to the height of the mover.
3. The zones only define the space in the upward/downward dimension; they do not define the space in the forward/backward, right/left dimensions.
4. The boundaries of the zones are not etched in stone. They are flexible and allow for some variation to reflect the intent of the movement.