The following documents the changes contained in the thirty-first update to the 2000 edition of MARC 21 Format for Community Information.  Update No. 31 (December 2020) includes changes resulting from proposals that were considered by the MARC 21 community since the publication of Update No. 30 (May 2020).

Obsolete content designators:

Subfield codes

The following subfields were made obsolete in 856 (Electronic Location and Access):

$b  Access number (R)

$h  Processor of request (NR)

$i   Instruction (R)

$j   Bits per second (NR)

$k  Password (NR)

$l   Logon (NR)

$n  Name of location of host (NR)

$r   Settings (NR)

$t   Terminal emulation (R)

Change in repeatability:

Field

043  Geographic Area Code changed to Repeatable (R)

See also:

Appendix F:  Format Change Lists

Appendices