680 Scope Note

Field definition and scope:

Field 680 contains information about the classification number or number span in field 153 (Classification Number) that describes its scope in the scheme identified in field 084 (Classification Schedule and Edition).

Field 680 is used for information such as an explanation and examples of the kinds of topics classed in the number or contrasting information regarding the scope and usage of other similar classification numbers. A separate 680 field is used when different types of notes are used or different characteristics apply.

The information in this field is intended for display to public catalog users in addition to guiding classifiers.

Field 680 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 680	Scope Note	R
Indicator:
First	Hierarchical force
0	Not applicable or no hierarchical force
1	Hierarchical force
2	Semihierarchical force

Second	Undefined; contains a blank

Subfield code:
$a	Classification number - single number or beginning number of span	R
$c	Classification number - ending number of span	R
$i	Explanatory text	R
$t	Topic	R
$y	Table sequence number for internal subarrangement or add table	R
$z	Table identification	R
$5	Institution to which field applies	R
$6	Linkage	NR
$8	Field link and sequence number	NR

Scheme-specific conventions:

Dewey Decimal Classification

Content designator history:

Subfield $t - Topic [new, 2008]

Subfield $y - Table sequence number for internal subarrangement or add table [new, 2008]