Got Nox Archaist, and looked through the manual. It's quite substantial, and even has an index!
Does this game have anything to do with Nox
the ARPG or is it it's own thing?
Never heard of Nox, but Nox Archaist seems to be more like Ultima 5, with a few of its own aspects (like skills that improve by use and major controllable stat growth at level up). In particular, the game seems to be strictly turn based from what I've seen and played.
(Also, it's worth reminding you that Nox Archaist is an Apple 2 game, so its design is, of course, affected by hardware limitations.)