008/13  Display controller  (Variable Control Field - Fixed-Length Data Element)

Character position definition and scope:

A one-character alphabetic code indicates whether the classification number in field 153 (Classification Number) appears in the standard schedules or tables or only in an extended display.  An extended display includes records created for numbers or terms as index access to the schedules or tables but not enumerated in the schedules or tables itself.  It also may include records for classification numbers within defined number spans created by applying a table or other add or divide like instructions.  These would normally not appear in the standard schedules.  Field 753 (Index Term - Uncontrolled) contains explanatory information that provides index access.

A record with field 154 (General Explanatory Index Term), identified in 008/06 (Kind of record) by code c (Index term record), always contains code b for extended display in this character position.

Guidelines for applying content designators:

Related MARC fields or documents:

008/06  Kind of record

008/12  Synthesized number indication

For information on other 008 character positions, see:

008  Fixed-Length Data Elements

See also:

Variable Control Fields