Maps game controller physical buttonsto virtual outputs that can be tuned for an optimal in-sim experience. Outputs can be virtual axes, or vitual buttons. A typical use would be mapping your Sptifire Mk IX elevator trim wheel to a single virutal axis that you use in sim. What's more, you can tune the sensitivity of the axis to aproximate the correct turn rate of the trim wheel in sim.
Pressing the same physical button multiple times alternately turn on two virtual output buttons. Can be in latching or momentary mode.