the physical device is a table supported by 3 legs. 1 leg on the front side, eahc leg
is equiped with a stepper motor allowing to change the height of the leg.
2 legs on the back side. 2 stepper motors allow to horizontally translate the front leg
or the 2 back legs.
The present class, defines 2 translations (vertical and horizontal) and 3 rotations
around a center of rotation.
The device server is ready for distribution application programmers.
The author will be interested in any feedback which arise from their
usage of this device server.