To give even more reality to your simulations. Fully programmable, you can do anything, including different profiles depending on the type of devices. Motor power of course, but also no variables, wealth, and airbrakes or "spoilers" on the jets, reverses engines, ... Great. The 6 inters also used to program functions like warms carburetor, auxi pumps, train control, headlights, leaving wing floats, Cowls flaps, well on all orders magneto, starter, avionics, etc etc ... It would be a shame to miss. One can, for fan motors or dual quad engines, coupling a second or third and fourth quadrant for even more reality.