The following 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:

Fields

673  Segmented Classification Number  (NR)

674  Segmentation Instruction  (R)

Subfield codes

$c  Classification number - ending number of span in 765 (Synthesized Number Components)

$e  Classification number hierarchy - single number or beginning number of span 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 in 680 (Scope Note)

$t  Topic in 683 (Application Instruction Note)

$t  Topic 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)

Changes in repeatability:

Subfield code

$z  Table identification in 153 (Classification Number):  changed from Not repeatable (NR) to Repeatable (R)

See also:

Appendix E:  Format Change Lists

Appendices