This field specifies the name of the marking model to be applied within this Marking_Structure.
This field contains a reference to an authoritative source on the marking model to be applied within this Marking_Structure.
Specifies a unique ID for this Marking_Structure.
Specifies a reference to the ID of a Marking_Structure defined elsewhere.
When idref is specified, the id attribute must not be specified, and any instance of this Marking_Structure should not hold content.