The exemption from automatic
declassification that is claimed for a document
This element is used in
conjunction with the Declassification Date or Declassification Event, and it
corresponds to the "Declassify On" line of a resource's classification authority
block. It is used primarily at the resource level. The permissible values for
this attribute are defined in the ISM N25X CVE: CVEnumISMN25X.xml.