Field definition and scope:

Field 753 contains information on the technical aspects of a computer file and any accompanying material that may be used to select and arrange the record with other records in a printed index.

This field is used for the type of machine, operating system, and/or programming language.  This kind of added entry is assigned according to various cataloging rules to give access to the bibliographic record which otherwise would not be possible and to facilitate the capability of selecting and arranging records for production of printed indexes.

The National level record requirement for this field is Optional.

Field 753 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below:

Position

Description

NLR

MLR

Repeatability

Field 753

System Details Access to Computer Files

O

O

R

Indicator:

 

 

 

 

First

Undefined; contains a blank

M

 

 

Second

Undefined; contains a blank

M

 

 

 

 

 

 

 

Subfield code:

 

 

 

 

$a

Make and model of machine

M

O

NR

$b

Programming language

A

O

NR

$c

Operating system

A

O

NR

$0

Authority record control number or standard number

 

 

R

$2

Source of term

 

 

NR

$6

Linkage

A

O

NR

$8

Field link and sequence number

O

O

R

Input conventions:

Punctuation

Content designator history:

Subfield $0 - Authority record control number of standard number  [new, 2016]

Subfield $2 - Source of term  [new, 2016]

Related MARC field or document:

880  Alternate Graphic Representation

See also:

700-75X  Added Entry Fields

Variable Data Fields