For the U.S. intelligence community do not use if the country of origin of the classification is the United States. See OCLC-MARC Code Lists for a list of codes. The date associated with the downgrading of the document, title, abstract, contents note, or author. Downgrading involves changes to security classification from a higher to a lower level. The date associated with the declassification of the document, title, abstract, contents note, or author.
Declassification involves the removal of any security classification on an item.
Printing Field 355 does not print. It is not retained in the master record.