Attribution
Naming the work whose wording or form you carried, in the exact words its licence asks for.
A licence reaches the wording and the shape of a work, never the ideas inside it. That single line settles most of what people find confusing here. If you learned an idea from another house and said it afresh in your own words, what is owed is thanks, named plainly. If you carried their wording or their form, what is owed is attribution in the terms their licence sets: who made it, where you found it, which licence it carries, and what you changed — and under share-alike, your version travels under that same licence.
The pages of this body carry no authorship line. In its place stands a close of thanks: a short paragraph naming the traditions, houses and works the thing grew from. Lineage is carried as gratitude rather than as a claim on what came through you, and the canon's ground for it is four words — nothing here is self-made.
A person is not an idea. Each person is named only as they choose, or not at all, and warm intentions do not replace their yes. Where someone shaped the work and has not said how they want to be named, nothing with their name in it is written; you ask, and until they answer you thank the house they came from.
Two failures are common enough to name. Borrowing wording and offering thanks instead of the licence's own line, which is not enough. And shipping a new version that quietly drops the lineage of the old, when every ancestry should travel on.
Also called: the authorship line, the gratitude close Stands on: License · Provenance · Knowledge as commons · Consent Opens onto: CC BY-SA 4.0 · MIT · Chatham House · Lineage · Gratitude · Weave, don't delete In play: Room · beyond Sources: Gratitude, Lineage and Licensing and the Player+ Modules' Lexicon (draft) · The DNA of Heaven, Part IV (Fable synthesis, unreviewed) · lionsberg.wiki: Commons Open: the practice of naming houses rather than persons and the ordinary academic expectation that a person be credited pull against each other; the resolution in use — persons by their own yes, houses freely — is a working convention, not a ruling.