I just got my first gMax 2 printer and had the skirt get come loose and get caught by second extruder nozzle. I was scrolling through the firmware options on the LCD and could not find a "Pause Print" or "Cancel Print" options under any of the headings. The firmware is a customized version of 1.1.19 Marlin. What is the correct way to cancel a print when standing in front of the machine?