Object reference models
The set of normal embeddings compatible with asingle RD binding has many members.
The set of normal embeddings compatible with a set of 2 or more RD bindings may be empty.
A careful selection of RDs and bindings may resultin a compatible set of normal embeddingsconsisting of a single member. I.e.: There is a unique compatible embedding for the bound RD set.
This is the concept for an object reference model.