Thanks! I guess there’s some room for confusion in the terminology used to describe a UV “map” – the docs mention both UV Texture (which isn’t really a texture but a mapping of the Texture), and UV Layout (capitols sort of implying a label status – it exists elsewhere in the UI but doesn’t mean the same thing), and in one paragraph, the definition of “UV Texture” is actually changed to refer to the mapped image rather than the map. Now UV-Set has been added in the Sandbox. Even with a fair chunk of experience in 3D, this kind of multi-buzzwording can lead to scratched scalps and question-marked-shaped halos ;). Clearer now, though.
Add to the list “UV layer,” which shows up in the Tool Tips of the Map Input panel, and actually refers to an entry in the UV Texture list.