844 Name of Unit (NR)

First Indicator - Undefined

 - Undefined

Second Indicator - Undefined

 - Undefined

‡a - Action

Subfield ‡a contains the bibliographic title of the unit or a supplied designation describing it.

844              Updates

854   0   1    ‡8 1 ‡a (year) ‡b no. ‡i (month)

864   4   1    ‡8 1.1 ‡a 1985 ‡b 1 ‡i 01

864   4   1    ‡8 1.2 ‡a 1985 ‡b 2 ‡i 02

‡8 - Field link and sequence number

Subfield ‡8 contains data that identifies linked fields and may also propose a sequence for the linked fields. Subfield ‡8 may be repeated to link a field to more than one other group of fields.

The structure and syntax for the field link and sequence number subfield is: ‡8<linking number>.<sequence number>

The linking number is the first data element in the subfield and required if the subfield is used. It is a variable-length whole number that occurs in subfield ‡8 in all fields that are to be linked. Fields with the same linking number are considered linked. A linking number of "0" (zero) is not used in this field.

The sequence number is separated from the linking number by a period "." and may be optional. It is a variable-length whole number that may be used to indicate the relative order for display of the linked fields (lower sequence numbers displaying before higher ones).

Subfield ‡8 is always the first subfield in the field when it is used.