Do we still have the notion of a "Controller Document"?

[iherman]

The title of the document has changed, but the concept of a "controller document" is still part of the specification, both as a section title (§2.1) and through the references to the term. Is that o.k.? Shouldn't there be a general change from a "Controller Document" to "Controlled Identifier Document" everywhere (maybe, in some cases, simply "Identifier Document")?

[msporny]

Yes, all mentions of "controller document" should have been changed to "controlled identifier document". If that's not the case, it's a bug and needs to be fixed.