355  Security Classification Control (R)

Definition

The security classification information for the document, title, abstract, contents note, and/or author. Use for handling instructions and external dissemination information. Use for downgrading or declassification data, the name of the classification system, and a country of origin code.

Use for classified or unclassified material. Use when the security information is too specific to be handled by field 506. This field may or may not be used in conjunction with field 357.

You may repeat field 355 when multiple classification or dissemination specifics are applicable.

Field 355 is not retained in the WorldCat record. It is retained in exported records and records delivered via other services.

For information on punctuation, see the Punctuation section below.

1st Indicator

Controlled element. Indicates which part of the item is controlled by the security classification.

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank.

	Undefined

Subfields

Punctuation

For records containing or omitting punctuation, follow these instructions:

• Include incidental punctuation needed within any subfields, e.g., commas, periods (following abbreviations or initials), etc.
• Omit punctuation preceding each subfield unless the preceding subfield ends with an ellipsis, exclamation point, hyphen, period (following an abbreviation or initial), question mark, closing bracket, or closing parenthesis
• Omit the terminal period at the end of the field unless the last word is an abbreviation or initial

For more information on punctuation, including OCLC policy, see section 2.8, Punctuation.

Indexing

Field 355 is not indexed.

MARC 21

For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 355.