Like the others, I don't know much about CNC or g-code, so I lack context to make any real suggestions. I do however, write modules for in-house use with many proprietary products. In order to fit the Perl Way a little more closely, I use capitalized vendor name followed by capitalised usage. For example, today I'm finishing a module that handles batch update cards for a piece of sofware from a company called Mobius. That module is Mobius::Card.