Action rules like
Instead of examining the storage:
or
Instead of singing in the storage:
won’t compile either (whereas »Instead of examining when the noun is the storage» and »Instead of singing when in the storage» does compile) – but they give another error message:
The Standard Rules turn out to use “storage” for the type (or kind or whatever) of variables, property values, etc. (It is used in phrase definitions like ‘To increase (S- storage) by (w - value):’.)
Possibly, therefore, Inform should handle »The Storage is a room» the same way it handles »The Object is a room»—with this kind of error message: