EbRIM/identifiers

Every RegistryObject is a persistable identifiable object. Being persistable means it can be stored and later retrieved. Being identifiable means it has a permanent id which can be used to address it. In XML this permanent id is the id attribute:

<ExtrinsicObject id="urn:uuid:14d4debf-8f97-4251-9a74-a90016b0af0d" ...

in XD* documentation it is known as entryUUID.

This identifier takes on two forms: UUID and symbolic.