
04/04 639Appendix B Bibliographic and authority tags
Authority tags
All authority records saved in the MARC Editor must have data entered in one
100series tag (100, 110, 111, 130, 150, 151, or 155). The authority tags used by
Cataloging to index authority records for searching and cataloging are identified
starting on page 639.
Use the following key to interpret the Authority tags table column headings.
Key for the authority tag description table
Column Description
No. This column contains the tag number.
Note: The asterisk (*) indicates that the tag is no longer valid. This character
only appears in the No. column.
Description This column contains the name of the tag according to the MARC 21 Format
for Authority Data publication.
Rep This column identifies each tag as repeatable or nonrepeatable.
Y: Repeatable
N: Nonrepeatable
Pos1 This column contains the default contents of the tag's first indicator position. If
the number in this column appears in parentheses, the indicator is a nonfiling
character.
Note: This symbol ∅ represents a blank space and is only required when you
are modifying templates during system setup. This symbol only appears in the
Pos1 column.
Pos2 This column contains the contents of the tag's second indicator position. If the
number in this column appears in parentheses, the indicator is a nonfiling
character.
Valid This column contains the subfields allowed in each tag.
Nonrep This column contains the nonrepeating subfields for each tag.
Indexed This column contains the indexed subfields for each tag. These are the sub
fields used to conduct searches.
Note: N/A is used to identify tags without subfields. This symbol only appears
in the subfield columns (Valid, Nonrep, and Indexed).
Important: The figures presented in the indicator columns (Pos1 and Pos2) are
Cataloging defaults. Other combinations may be possible.
Authority tags
Tag Indicators Subfields
No. Description Rep Pos1 Pos2 Valid Nonrep Indexed
000 Leader N N/A N/A N/A
001 Control Number N N/A N/A N/A
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