M106 S0
M140 S0
M104 S210 T0 ;set temperature
M109 S210 T0 ;set temperature
G28  ;home all axes
G92 E0 ;set absolute positioning
G1 Z50 F3000 ;move up

G1 X100 Y100 F4800 ;move to center
M117 Unloading...
G1 E-100 F200 ;unload
M117 Waiting...
G4 S10 ;wait 10 seconds
G92 E0
M117 Loading...
G1 E1000 F100 ;load

M104 S0 ; turn off extruder
M140 S0 ; turn off bed
G28 X0 Y0                  ;move X/Y to min endstops, so the head is out of the way
M84                         ;steppers off
M84 ; disable motors