-g option is not documented

[jsprenkle]

This page lists a '-g' option but does not document what valid settings are or how to choose the correct one for your machine.

[dcnewman]

Hmmm, the usage() info and the README.md states

1. That it's an option with no arguments. That's the "gpx [-dgiprsvw]" in the usage output.
2. That
   -g Makerbot/ReplicatorG GCODE flavor

and thus specifying -g means that you are using Makerbot-style gcode. (Which is different from RepRap style gcode.)

Admittedly, if you're not used to Unix-style documentation, that's not immediately obvious and may seem a bit impenetrable. But for folks more used to Unix utilities, that is what is documented. (And it's accurate as well.)