from one of my own prints, on a single extruder you can see this between features
G1 X-80.743 Y7.212 E0.0110
G1 E-10.0000 F1200 (retraction)
; outer perimeter
G1 X-80.754 Y-7.228 F4200
G1 E9.0000 F1200 (purge)
but you don't see it on the dual. ???? why is this? surely there should be something