G21;(metric values) G90;(absolute positioning) M82;(set extruder to absolute mode) M107;(start with the fan off) G28;(Home the printer) G92 E0;(Reset the extruder to 0) G0 Z5 E5 F500;(Move up and prime the nozzle) G0 X-1 Z0;(Move outside the printable area) G1 Y60 E8 F500;(Draw a priming/wiping line to the rear) G1 X-1;(Move a little closer to the print area) G1 Y10 E16 F500;(draw more priming/wiping) G1 E15 F250;(Small retract) G92 E0;(Zero the extruder)