An Aggregation representing an intellectual entity of some kind.

Objects may have member Objects (but not Collections) and may also have Files. The and subclasses provide a more sophisticated modelling.

defines semantics for and (to point to a Proxy of the first member), but this is confused: These terms are meant to be used for horizontal linking between aggregation members, not vertical linking between aggregations and the things they aggregate. Consequently, the usage of these properties with Objects is not recommended by this ontology.