pedal 1 / pedal 2 launches the calibration of the pedal inputs. For more details, see pedal calibration.
 

key calibration assistant allows the manual calibration of individual keys by defining their vertical, left, and right maximum positions. The assistant allows you to correct a flawed factory calibration or irregular behavior of individual keys.
 

force sensor reset allows triggering the sensor calibration that usually happens during booting without the need to switch off your unit. It can be useful to troubleshoot or analyze random errors with sensor recognition.

keys factory reset (for all keys) allows resetting all key calibration data to the factory state. This will undo any manual calibration done in the meantime. If you wish to only reset single keys to their factory state, use the key calibration assistant instead.