In the Pcbnew help file section “Files for fabrication” one of the outlines steps to prepare for manufacture is “Setting coordinates origin.” It mentions an auxiliary axis yet offers no explanation. I even searched the rest of the help file and there is simply tells you how to change it not what it is and why it is important. What does the phrase “one must place the auxiliary axis on this origin” mean? Which origin? On the coordinates origin?
Also, the photo included in the section sort of implies you should set this ‘coordinates origin’ to the center of a some (randomly chosen?) drill hole on your board. Does it matter where this point is actually chosen? Does the point have to be on the board?