M115 U3.1.1-RC4 ; tell printer latest fw version
M83  ; extruder relative mode
M140 S[first_layer_bed_temperature] ; set bed temp
M104 S170 ; set extruder temp to 170
M190 S[first_layer_bed_temperature] ; wait for bed temp
M109 S170 ; wait for extruder temp
G28 W ; home all without mesh bed level
M104 S[first_layer_temperature] ; set extruder to print temp
G80 ; mesh bed leveling ie 9 points
M109 S[first_layer_temperature] ; Heat extruder to print temp and wait
G1 Y-3.0 F1000.0 ; go outside print area
G92 E0.0
G1 X60.0 E9.0  F1000.0 ; intro line
G1 X100.0 E12.5  F1000.0 ; intro line
G92 E0.0
M221 S95