While the Mark eats away at my job, I am also very interested in the machine control. The buttons can be used for movement between and within files, generating new files from the device and controlling the laser cutter.
You can control if you want roughed out pieces or smooth workpieces. There is no need to use a brush tool for roughening workpieces. If you are printing or engraving material with coarse particles, such as plaster, you will have to brush those away after silkscreen or engraving to get the smooth edges. The brush tool can be used for this and to smooth the corners of an object on rounded edges.
Only a couple of seconds after I have applied the settings to the upper right portion of the screen, the round edges on an object are pretty much there. I have tried several different settings to see how the dots of the laser cutter will fill in. I noticed that some attributes do not persist, in that if I change an attribute and save it, but the job re-fires before I can reach the progress bar again, the changes will be lost. I prefer the strokes to be a solid colour, then later I can go back and individually colour the strokes as I burn them.