X55 - Genre/Form Terms-General Information
MARC 21 Authority
October 2003
"Full" documentation refers to the MARC 21 Format for Authority Data that contains detailed descriptions of every data element, along with examples, input conventions and history sections.
"Concise" documentation refers to the MARC 21 Concise Format for Authority Data that contains abridged descriptions of every data element, along with examples.
455 - See From Tracing - Genre/Form Term (R)
Full |
Concise
555 - See Also From Tracing - Genre/Form Term (R)
Full |
Concise
755 - Established Heading Linking Entry - Genre/Form Term (R)
Full |
Concise
First Indicator
Undefined
# - Undefined
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Second Indicator
155/455/555
-
Undefined
# - Undefined
755
-
Thesaurus
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2 |
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Subfield Codes
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Main term portion
$a - Genre/form term (NR)
Tracing and linking subfields
$i - Reference instruction phrase (NR) [455/555]
$w - Control subfield (NR) [455/555/755]
$0 - Record control number (R) [555/755]
$2 - Source of heading or term (NR) [755]
$5 - Institution to which field applies (R) [455/555/755]
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
| Subject subdivision portion
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
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GUIDELINES FOR APPLYING CONTENT DESIGNATORS
Content designators identify the subelements occurring in genre/form term headings
constructed according to generally accepted thesaurus-building conventions (e.g.,
Art & Architecture Thesaurus). Genre terms for textual materials
designate specific kinds of materials distinguished by the style or technique of their
intellectual contents; for example, biographies, catechisms, essays, hymns, or reviews.
Form terms designate historically and functionally specific kinds of materials as
distinguished by an examination of their physical character, characteristics of their
intellectual content, or the order of information within them; for example, daybooks,
diaries, directories, journals, memoranda, questionnaires, syllabi, or time sheets. In
the context of graphic materials, genre headings denote categories of material
distinguished by vantage point, intended purpose, characteristics of the creator,
publication status, or method of representation.
Only generally-applicable content designators are described in full in this section. A
small number of content designators with field-specific instructions are described in
the Tracings and References-General Information section (for field 455 and 555)
and the 7XX Heading Linking Entries-General Information section (for field
755).
■ INDICATORS
First Indicator - Undefined Undefined and contains a blank (#).
Second Indicator In fields 155, 455, and 555, the second indicator position is undefined and
contains a blank (#). For field 755, the second indicator position contains one of
the values described in the
7XX Heading Linking Entries-General
Information section.
■ SUBFIELD CODES
$a - Genre/form term May consist of more than one word.
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| 155 |
##$aBird's-eye views$y1874 |
| 155 |
##$aCartoons$y1952 |
$i - Reference instruction phrase [455/555]Reference instruction phrase other than those that may be system generated from
the field tag or from the codes defined for subfield $w (Control subfield).
Subfield $i is appropriate only in field 455 and 555. Guidelines for applying
subfield $i are provided in the Tracings and References-General
Information section.
$v - Form subdivision Designates a specific kind or genre of material as defined by the thesaurus being
used. Subfield $v is appropriate only when a form subject subdivision is added to
a genre/form term to form an extended heading.
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| 155 |
##$aCartoons$vPeriodicals |
$w - Control subfield [455/555/755]Codes in one or more character positions defined to control the display of
information and specify relationships, restrictions, and status. Subfield $w is
appropriate only in field 455, 555, and 755. Character position definitions and
guidelines for applying the codes defined for subfield $w in field 455 and 555 are
provided in the Tracings and References-General Information section.
Character position definitions and guidelines for field 755 are provided in the
7XX Heading Linking Entries-General Information section.
$x - General subdivision Subject subdivision that is not more appropriately contained in subfield $v (Form
subdivision), subfield $y (Chronological subdivision), or subfield $z (Geographic
subdivision). Subfield $x is appropriate in the X55 fields only when a general
topical subdivision is added to a main term to form an extended heading.
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| 155 |
##$aDictionaries$xFrench$y18th century |
$y - Chronological subdivision Subject subdivision that represents a period of time. Subfield $y is appropriate
in the X55 fields only when a chronological subject subdivision is added to the
main term to form an extended heading.
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| 155 |
##$aCompetition drawings$y1984 |
$z - Geographic subdivision Appropriate in the X55 fields only when a geographic subject subdivision is added
to a main term to form an extended heading.
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| 155 |
##$aHymnals$zMassachusetts$y18th century |
$0 - Record control number [555/755]
$2 - Source of heading or term [755]Code that identifies the source of a heading or term when the second indicator
position contains value 7. Subfield $2 is appropriate only in field 755.
Guidelines for applying subfield $2 are provided in the
7XX Heading Linking
Entries—General Information section.
$5 - Institution to which field applies [455/555/755]
$8 - Field link and sequence number
INPUT CONVENTIONS
Punctuation - Term followed by a subject subdivision does not end with a mark of punctuation unless
the preceding term ends with an abbreviation, initial/letter, open date, or other data
that ends with in a mark of punctuation.
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| 155 |
##$aPrayer books$zRhode Island$y18th century |
Spacing - No spaces are used in initialisms, acronyms, or abbreviations.
Display Constant
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[dash associated with the content of subfield $v, $x, $y, and $z] |
Dash (-) that precedes a subdivision in an extended subject heading is not carried in
the MARC record. It may be system generated as a display constant associated with the
content of subfields $v, $x, $y, and $z.
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Content designated field :
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| 155 |
##$aAgenda$xWeekly$y1980-1985
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Display example:
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Agenda-Weekly-1980-1985
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CONTENT DESIGNATOR HISTORY
Prior to the definition of the X55 fields, X50 (Topical Terms) fields were used for
genre/form headings.
$v - Record control number [755] [REDEFINED, 1995] [USMARC only]
$0 - Record control number [555/755] [NEW, 1997]