wouldn't "section" be a better name?
the 30040 kind can be stacked in a tree right? so you can have like Genesis, Exodus, etc and then in each Chapter I, Chapter II, etc and in those probably better to then just use a simple header to indicate position
They can be stacked, yes, and the 30041 is where they actual content is.
It could be section, but i like the general idea. Novels may have sections, but one may want to fine grain it even more. The purpose for denoting sections ( through whatever method) is that the author explicitely is stating "this text belongs here, not over there". Makes a nice training set on "semantically closed" concepts.
The format is definitely most ammenable to "sections" though, given the title tag requirement.