Hello！ Function shown in the picture belongs to the default function of the software settings. Some of them are the value of Port Pin Orion motherboard.
STEP is a stepper motor pulse control pin number.
DIR is a stepper motor direction control pin number.
MIN and MAX to limit control pin. PPM (Pulse-position modulation).
PPM resizing change drawing scale.
LASER: Laser module control pin number.SERVO also control pin number.
FEED Rate: 3000 to feed the speed limit.
These values Orion (Uno compatible) pin number. You can change it, but you need some knowledge of the circuit. Thank you！