I have tried to find the programming and operator documentation for CNC11 both on the forum and on the Centroid sales websites. Would assume there would be a sticky at the top of the “Centroid Oak, Allin1DC, MPU11 and Legacy products” forum, or somewhere under the "CNC Resources" tab in the Centroid home page, but alas, nothing.

I must not have found the magical search term either because the search bar is of no use. The closest I have come is stumbling upon a link to the "Centroid Mill Operator Manual" under the Documentation & Support tab for the Allin1DC CNC Controller order page...which links to a PDF for CNC12 operator's manual. That PDF fails to load after 2 attempts.
I hope that documentation and support for CNC11 is not going the way of the Dodo. If it is, please come clean and say so because although I'd rather not be forced to pony up the 300 bucks to upgrade to CNC12, I'd do it under duress in order to maintain my investment in this Centroid system.
Specifically, I am looking for a list of supported G and M codes at the moment. I am trying to speed up the homing process of the 4th axis indexer I just got working and was told to try using M105 and M106 in my homing file...but I am unfamiliar with those M codes. Additionally, the post I have been using with good success on my Centroid control is the same one I use at work on the Haas, which supports "Inverse Time" feed mode for simultaneous 4 axis rotary moves, and I am wondering if Centroid also supports this mode. (I am hoping I don't need to pay my CAD/CAM reseller for post modifications)
Pointing me to where I can download the programming/operator manual for CNC11 would be greatly appreciated...even more so if someone wanted to drop a quick example of the M105/M106 codes used in a homing file with regard to speeding up the indexer homing cycle.