008/09 Standard or optional designation (Variable Control Field - Fixed-Length Data Element)
Character position definition and scope:
A one-character alphabetic code that indicates whether the classification number in field 153 Classification Number) contains a standard or optional classification number or span in the classification scheme identified in field 084 (Classification Scheme and Edition . A standard classification number or span is from the standard part of the schedules or tables . An optional classification number or span is an officially recognized optional alternative to the standard part of the schedules or tables. A record containing code c (Index term record) in 008/06 (Kind of record) contains code n in this character position.
Guidelines for applying content designators:
Codes: Description:
a Standard
b Optional
Scheme-specific conventions:
Related USMARC fields or documents:
008/08 Classification validity
X53 Classification Numbers - General Information
683 Application Instruction Note
For information on other 008 character positions, see:
008 Fixed-Length Data Elements
See also:
