object *is* a door -- but Inform already knows the word (it's the name
of a library attribute). Unfortunately, the error message provides only
the vaguest hint that you just need to choose another name: we used
object *is* a door -- but Inform already knows the word (it's the name
of a library attribute). Unfortunately, the error message provides only
the vaguest hint that you just need to choose another name: we used