The scale option under “Galvo 2” has previously changed the size of the output, but now starting from today it changes the output power !
I was calibrating a new lens today and when I test engraved a 10mm circle on paper, it turned out to be 11.7mm. But when I changed the scale parameter, it ended up burning through the paper at 10% power.
Correction, I think it actually scales the speed. If I set it to 10%, then the laser runs slowly and therefore it burns through.