Hi Danny, I kind of vaguely remember that term "Class A surfaces" might have been introduced by the Gartner Group business analyst company, it seemed to me to be similar to a snake oil thing, kind of like "oh this $60,000 program running on this $60,000 SGI workstation is absolutely needed for this business because it does special Class A surfaces instead of ordinary plebeian low class surfaces"...

Of course some of the really specialized expensive surfacing software can do some other kinds of interesting things as well, which can be useful if you are obsessing about controlling how the reflections on a surface are shaped.

But G4 continuity doesn't have much to do with it really.

- Michael