The following documents the changes contained in the twenty-sixth update to the 1999 edition of MARC 21 Format for Authority Data.  Update No. 26 (April 2018) includes changes resulting from proposals that were considered by the MARC 21 community since the publication of Update No. 25 (December 2017).

Change in content designator definition:

Subfield code

$r  Total number of individuals performing alongside ensembles (NR) redescribed in 382 (Medium of Performance)

See also:

Appendix F:  Format Change Lists