Thanks for that John. LOL. Up to about an hour ago I thought that there were only minor dialect differences in G-code and those would only be found in the heady areas of Haas / Fanuc type territory. I also thought that the ISO standard would be the main one in use! :-) WRONG! ...and as I have no ambitions to purchase an 8 axis PA 8000 e2, I'll certainly wander over to Amazon grab the handbook, sounds like a useful read.

At the moment I'm not certain if I'll use Mach 3 or something else so I've only had a quick look through the Mach manual. If I do end up using Mach3 then I'll obviously use their G-code spec.