If you don’t already, you need to get the difference between raster and vector firmly in your head, here is a little tutorial on it and other basics: Laser Design Basics 🤔
Now as far as layers, the 
doesn’t care, it knows the difference even when we don’t! You can separate vectors out by color, each color will present as a job on the left of the interface where you can choose cut, score, or engrave.
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