260 Complex See Reference

Field definition and scope:

Field 260 contains the explanatory text and the headings referred to that are required when relationships exist between unestablished and established subjects that cannot be adequately conveyed by one or more simple cross references generated from 4XX See From Tracing fields in the established heading record. A phrase such as search under: may be generated for display.

Field 260 is appropriate only in a traced or an untraced reference record or a reference and subdivision record for subjects.

The 1XX field in the record contains the unestablished subject heading referred from.

Field 260 contains the explanatory text for the see reference and the established headings referred to.

The unestablished heading contained in field 1XX of the reference record may either be traced in a 4XX field or noted in a 681 (Subject Example Tracing Note) field in the record for each heading referred to in the 260 field.

See examples under the description of subfield $i (Explanatory text).

A cross reference display may be constructed from the 1XX and 260 fields of the reference record. Reference instructions may be a combination of a tag-related phrase and text in subfield $i. Examples of complex cross reference displays are provided in Reference Note Fields: Complex Cross References.

The National level record requirement for this field is Mandatory if applicable.

Field 260 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:

Position	Description	NLR	Repeatability
Field 260	Complex See Reference - Subject	A	R
Indicator:
First	Undefined; contains a blank	M
Second	Undefined; contains a blank	M

Subfield code:
$a	Heading referred to	A	R
$i	Explanatory text	M	R
$0	Authority record control number or standard number	O	R
$1	Real World Object URI		R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

See: Examples for this field.

Input conventions:

Reference record variable fields

Display constants

Content designator history:

Subfield $0 - Authority record control number [new, 2007]

Subfield $0 - Authority record control number [redefined, 2010]

Subfield $1 - Real World Object URI [new, 2017]

LC Guidelines:

260 Complex See Reference - Subject