When I am writing g-code, is it machine specific? I downloaded an open source software (CAMOTICS) to simulate my g-code and it runs flawlessly. However, when I try to run it on a Hass desktop mill it doesn't recognize some of the commands, or insists that there is overtravel when I am only engraving a small part that is inside of 5x5 inches. Am I missing some opening lines of code? Any help would be appreciated.