About This File
A recurring topic among Warhammer 40,000 hobbyists is whether or not different Chapters of the Adeptus Astartes qualify as being either adherent/compliant with or divergent from the Codex Astartes. Debate covers a variety of issues, including how Chapters with known divergences from the Codex Astartes can still be considered adherent/compliant in the official lore. This article presents one possible framework by which such an assessment might be made, as well as complicating factors that have to be taken into account.
This is the downloadable/printable .pdf version of the article that can be read online here.