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. |
| COM | 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. |
| REC, VIS | 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 (  ). |
| | | | Undefined | |
2nd Indicator | Undefined. The 2nd indicator position is undefined and contains a blank ( ). |
| | | | 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, 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 | | Enter as hex value only | vertical bar | n/a | %7C |
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| ‡3 Materials specified | The part of the described materials to which the field applies. |
| ‡5 Institution to which field applies | MARC code of the institution or organization that holds the copy to which the data in the field applies. Data in the field may not apply to the universal description of the item or may apply universally to the item, but be of interest only to the location cited. See MARC Code List for Organizations ( http://www.loc.gov/marc/organizations/orgshome.html). | 538 | | | ‡3 1-39 (1927-1965) ‡a Files for the images of individual pages are encoded in Aldus/Microsoft TIFF Version 6.0 using facsimile-compatible CCITT Group 4 compression. ‡5 NIC | | 538 | | | ‡3 1-49 (1927-1975) ‡a Master and use copy. Digital Master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. ‡u http://www.diglib.org/standards/bmarkfin.htm ‡5 ICU | |
Printing | Field 538 prints as a note. Subfield ‡u does not print. See " 5xx Introduction" for more information. |
