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538  System Details Note (R)

Input Standards

Required if applicable/Required if applicable
1st Indicator  Undefined
blank character  Undefined
2nd Indicator  Undefined
blank character  Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
‡a System details note (NR) Mandatory/Mandatory
‡i Display text (NR) Optional/Optional
‡u Uniform Resource Identifier (R) Optional/Optional
‡3 Materials specified (NR) Optional/Optional


Definition

 A note about the system information for the item. Such information includes the absence or presence of certain kinds of codes or the physical characteristics of a computer file such as blocking factors, mode of access, parity or recording densities.

For software, enter data such as computer requirements (e.g., computer manufacturer and model, memory requirements or operating system), peripheral requirements (e.g., number of disk or drum units, number of tape drives, number of terminals, or other peripheral devices, support software or related equipment) or software programming language.

For sound recordings and videorecordings, use for information about the trade name or recording system(s) (e.g., VHS), modulation frequency and number of lines of resolution.

1st Indicator

 Undefined. The 1st indicator position is undefined and contains a blank (blank character ).
blank character Undefined

2nd Indicator

 Undefined. The 2nd indicator position is undefined and contains a blank (blank character ).
blank character Undefined

Subfields
‡a System details note

The entire text of the note.

538 Data written in extended ASCII character set.
538 Disk characteristics: Floppy disk, single sided, double density, soft sectored.
538 Mode of access: Electronic mail via Internet and BITNET; also available via FTP.
538 System requirements: IBM PC; 64K; color card; 1 disk drive, color monitor recommended.
538 Written in FORTRAN H with 1.5K source program statements.
538 Mode of access: World Wide Web.
‡i Display text
The text intended to be displayed preceding the other data contained in the field
538 Benchmark for Faithful Digital Reproductions of Monographs and Serials. Version 1. December 2002 ‡ i Digital version conforms to: ‡u http://www.diglib.org/standards/bmarkfin.htm
‡u Uniform Resource Identifier The Uniform Resource Identifier (URI), for example a URL or URN, which provides electronic access data in a standard syntax. Use this data for automated access to an electronic item using one of the Internet protocols. Repeat subfield if digital object has multiple identifiers (URIs).

Substituting hexadecimal notation for diacritics and special characters in Uniform Resource Identifiers. When recording a URI in subfield ‡u, you may enter most of the spacing characters listed below as either characters or their hexidecimal equivalents. Consult the table below.

Note: Do not confuse the spacing characters listed below with their long-valid non-spacing counterparts. Use of the spacing characters will be limited almost exclusively to URLs.

Entry method Name Character Alternative entry (hex value)



Enter as character or hex value		 Spacing circumflex/circumflex accent ^ %5E
Spacing underscore/low line 1  _ %5F
Spacing grave/grave accent ` %60
Spacing tilde/tilde ~ %7E
vertical bar (client only) | %7C
Enter as hex value only vertical bar (browser only) n/a %7C

1  Because the Spacing Underscore may cause problems with MARC output, users may prefer to continue entering it with the hexidecimal value %5F.


‡3 Materials specified The part of the described materials to which the field applies.

Printing

 Field 538 prints as a note. Subfield ‡u does not print. See " 5xx Introduction" for more information.

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