“EJECT (EXTEND)” button – Selecting and holding this button will extend the push plate toward the rear of the machine and will expel any material within the gelatin evacuation system.“”“PROCESS (RETRACT)” button – Selecting and holding this button will retract the push plate toward the front of the machine returning to its process position. Gel Eject Door – The buttons within this box are used to open and close the gelatin evacuation system’s rear swing door.