G21 ; (metric values)
G90 ; (absolute positioning)
M82 ; (set extruder to absolute mode)
M203 E80 ; (set extruder max to 80)
G28 ; (home all axis)
G29 ; (Auto Level)
G92 E0 ; (reset extruder)
G1 Z1 F3000 ; (move z up little to prevent scratching of surface)
G1 X5 Y20 Z0.2 F5000.0 ; (move to start-line position)
G1 X5 Y150.0 Z0.2 F1500.0 E15 ; (draw 1st line)
G1 X5.2 Y150.0 Z0.2 F5000.0 ; (move to side a little)
G1 X5.2 Y20 Z0.2 F1500.0 E30 ; (draw 2nd line)
; G1 E27 F1000 ; (retract filament 1mm)
G92 E0 ; (reset extruder)
G1 Z1.0 F3000 ; (move z up little to prevent scratching of surface)