Laser Cutter/Instructions
The lasercutter software on the laser PC is able to import DXF (revision 14!) format files.
Text, needs to be transformed into 'outlines' in order to cut. In order for an area to be engraved ("coloured in") the shape needs to be a closed loop, and any areas inside (for example the letter '0') need to ... something. I don't think a compound-path is necessary. Can't remember.
In Adobe Illustrator, sometimes the different colours you set text come through as different layers, and sometimes not. I didn't find a pattern to it.
In the lasercutter software, each colour is its own layer, and has it's own power/speed cut/engrave settings and can be disabled.
Colouring different layers is useful for setting the cutting order of parts (usually you'd want to cut the holes before the outside of the shape, as once cut the "hole-of-the-donut" will fall down, and its position change.