| Mandatory | Repeatable | Data Type | Authority | Public Element |
|---|---|---|---|---|
| Yes | No | Variable Character Length (700) | None | Yes |
| Definition: |
The established, preferred form of a topical term. Variant or non-preferred term topical headings lead to the authorized Topical Subject heading. |
| Purpose: |
Controls the heading or entry of the Topical Subject authority record. Supports the primary purpose of vocabulary control to achieve consistency in description and to facilitate retrieval. |
| Relationship: | Topical Subject is the element on which all other elements used to describe topical subjects are dependent. To have any other element about a topical subject, Topical Subject must be created. Topical Subject is an independent element. |
| Guidance: | For cataloging topical subject headings, see the Subject Cataloging Manual: Subject Headings (Library of Congress). |
| Examples: |
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