The following documents the changes contained in the twenty-seventh update to the 1999 edition of MARC 21 Format for Bibliographic Data.  Update No. 27 (November 2018) includes changes resulting from proposals that were considered by the MARC 21 community since the publication of Update No. 26 (April 2018).

New content designators:

Fields

251  Version Information (R)

341  Accessibility Content (R)

532  Accessibility Note (R)

Subfield codes

$p  Language code of captions (R) in 041 (Language Code)

$q  Language code of accessible audio (R) in 041 (Language Code)

$r  Language code of accessible visual language (non-textual) (R) in 041 (Language Code)

Changes in content designator names and definitions:

Subfield codes

$j  Language code of subtitles or captions renamed Language code of subtitles and redescribed in 041 (Language Code).

$6  Linkage redescribed in Appendix A (Control Subfields).

See also:

Appendix G:  Format Change Lists

Appendices