Without a route Hatch, the Gcode generated will be very inefficient. the circuit hatch creates a super efficient Gcode conversion.
Attached a photo of a circuit hatch created along tedious paths for a hammermill blade in order to get the blade flat and to exact thickness.

In case you want to know how this can be done currently in Qcad see the following thread with excellent solutions from the Qcad community.
https://qcad.org/rsforum/viewtopic.php? ... 480#p31480