The fields, subfields or positions in column 7 refer to MARC21 if no specific MARC format is mentioned.
| USE | Name of term | Term definition | Syntax | Area of use | Examples | MARC field/subfield |
| Composition | Type of composition [Mus] | Two.letter Code | Searching for music (scores and sound recordings) | Blues: bl Opera: op |
008 pos.18-19 | |
| Intellectual level | Target audience such as todlers, preschools, etc. | One character Code | Limiting factor in literary searches | Adults: a Age 0 - 5: l Easyreader: q |
008 pos.22 | |
| Standard number | other standard numbers without separate MARC tag | Code | Searching for specific items | 024 $a and $2 | ||
| EAN | European article number (EAN) | A 13-digit number where 1-3: type of merchandise 4-12: ISBN minus check digit (if type is book) 13: check digit |
Searching for specific items | A book with ISBN 82-03-15849-8 gets the EAN: 978820315490 |
UNIMARC 073 $a and NORMARC 025 $a |
|
| NLC | Canadian class. system | Code consisting of capital letter(s), digits and punctuation | Subject search | HT154 M1679.18 |
055 | |
| CRCS | CRCS (Computing Review Classification Scheme) | Code of form: X.n.m.... Where X is a capital letter, n and m etc. are digits and the full stops indicate the hierarchy |
Subject search | Database theory: H.2.0 | 084 $a and $2 and NORMARC 062 $a |
|
| Nationality | nationality (author) | Code consisting of two lowercase letters | Qualifying names | Norwegian: no | UNIMARC 7xx $c and NORMARC 1xx $j |
|
| Equinox | equinox (Map) | Name of equinox | Limiting factor in searching for maps | eq.1950 | 255 $e | |
| Compression | specific type of compression | Limiting search result | 856 $c | |||
| Format | electronic format | Limiting search result | 856 $q | |||
| Subject - genre/form | Subject added entry - Genre/form | Index terms | Subject search | Dictionaries Signing patterns Home page |
655 $a | |
| Subject - occupation | Subject added entry - occupation | Index term | Subject search | Biologist Teacher |
656 $a | |
| Subject - function | Subject added entry - function | Index term | Subject search | 657 $a | ||
| Edition | Edition of document | Text | Limiting search result | 2.ed Special education ed. |
250 $a |