Is there a concise description somewhere of the Google Docs data model? Are documents located in just one place or not? Why is there a "Move" action? Does that mean it won't be where it was before? Why can't I find a document's current location?
@nedbat if I click the "move icon", the panel that appears shows a "current location" that matches what I expect (moved a document to a folder and the current location pointed to the folder).
But it's very confusing. I think documents exist in a single place. They also have a unique internal id that "persists" even if the name changes.