Location | L | Location, where the external source (classification, document or library) can be accessed by electronic means, URI | Text |
Identification | I | The Identification provides a unique identifier of the referenced item within the external source (classification, document or library) | Text |
Name | N | Optional name to further specify the reference. It can provide a human readable identifier (which does not necessarily need to have a counterpart in the internal structure of the document). | Text |
ReferencedSource | R | The classification system or source that is referenced. | Generic Data |
Description | D | Description of the classification reference for informational purposes | Text |
Sort | S | Optional identifier to sort the set of classification references within the referenced source (either a classification facet of higher level, or the classification system itself). | Text |