start_gcode=G90 ; Explicitly force absolute positioning in case it was not reset previously.\nG28 ; Home all axes.\nG29 ; Auto-level the bed.\nG0 X0 Y6 Z0.15 F9000 ; Move to the front-left part of the bed.\nG92 E0 ; Zero the extruder.\nG1 X60 E38 F500 ; Extrude a fat line of filament to prime and clean the nozzle.\nG92 E0 ; Zero the extruder minus restart offset\nG1 E-1.0 F500 ; Retract 1 mm.\nG1 X80 Y20 F9000 ; Sweep right to cut any strings.\n; Begin printing.G28 ; home all axes\nG1 Z5 F5000 ; lift nozzle\n