Correct documentation on why the temperature is switched off later
Correct documentation on why the temperature is switched off later

This old code needs to be after the switch, but it was not clear to me why. I tried to make it clear and failed.

Contributes to issue CURA-2795.

alephobjects/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,ROBO3D/CuraEngine