er, I don’t think we can say that. Actions don’t care about scope. Grammatical tokens in understand lines care about scope. one visible thing means that the basic accessibility rule won’t care whether the noun is touchable and the carrying requirements rule won’t care whether the noun is carried. That is, that any game object – direction, room, region, or thing (in or out of play) could be usable with this action, provided an understand line gets us there.
Lab is a room.
Conservatory is a room.
fooing is an action applying to one visible thing.
understand "foo [any thing]" as fooing.
understand "foo [any room]" as fooing.
understand "foo [any region]" as fooing.
report fooing: say "Foo [noun]."
The house is a region.
The box is a thing. [out of play]
test me with "scope / foo conservatory / foo north / foo house / foo box".
yields
>[1] scope
1: yourself (582487)
>[2] foo conservatory
Foo Conservatory.
>[3] foo house
Foo house.
>[4] foo box
Foo box.
>
edited to correct myself: The basic accessibility rule already doesn’t care if the noun is a region or room; with one visible thing it also won’t care whether or not the noun is a direction, or a thing that isn’t present or can’t be touched.