Appendix E - Format Changes
MARC 21 Classification
October 2008
This section is provided for the lists of format changes that accompany each update
to the MARC 21 Format for Classification Data.
MARC 21 FORMAT FOR CLASSIFICATION DATA
FORMAT CHANGE LIST
Update No. 9, October 2008
This page documents the changes contained in the ninth update to the 2000 edition of
the MARC 21 Format for Classification Data. Update No. 9 (October 2008)
includes changes resulting from proposals that were considered by the MARC 21
community during 2008.
■ New content designators:
Subfield codes
$c
Classification number-Ending number of span
in 765 (Synthesized Number Components)
$e
Classification number hierarchy-Single number or beginning number
in 153 (Classification Number)
$f
Classification number hierarchy-Ending number of span
in 153 (Classification Number)
$q
Assigning agency
in 084 (Classification Scheme and Edition)
$t
Topic used as example
in 680 (Scope Note)
$t
Topic used as example
in 683 (Application Instruction Note)
$t
Topic used as example
in 761 (Add or Divide Like Instructions)
$y
Table sequence number for internal subarrangement or add table
in 153 (Classification Number)
$y
Table sequence number for internal subarrangement or add table
in 253 (Complex See Reference)
$y
Table sequence number for internal subarrangement or add table
in 353 (Complex See Also Reference)
$y
Table sequence number for internal subarrangement or add table
in 453 (Invalid Number Tracing)
$y
Table sequence number for internal subarrangement or add table
in 553 (Valid Number Tracing)
$y
Table sequence number for internal subarrangement or add table
in 680 (Scope Note)
$y
Table sequence number for internal subarrangement or add table
in 681 (Classification Example Tracing Note)
$y
Table sequence number for internal subarrangement or add table
in 683 (Application Instruction Note)
$y
Table sequence number for internal subarrangement or add table
in 684 (Auxiliary Instruction Note)
$y
Table sequence number for internal subarrangement or add table
in 685 (History Note)
$y
Table sequence number for internal subarrangement or add table
in 686 (Relationship Source Note)
$y
Table sequence number for internal subarrangement or add table
in 761 (Add or Divide Like Instructions)
$y
Table sequence number for internal subarrangement or add table
in 765 (Synthesized Number Components)
$y
Table sequence number for internal subarrangement or add table
in 768 (Citation and Preference Order Instructions)
Fields
673Segmented Classification Number (NR)
674Segmentation Instruction (R)