# - Undefined
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|$a - System details note (NR)
$i - Display text (NR)
$u - Uniform Resource Identifier (R)
$3 - Materials specified (NR)
|$5 - Institution to which field applies (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
Technical information about an item, such as the presence or absence of certain kinds of codes; or the physical characteristics of a computer file, such as recording densities, parity, blocking factors, mode of access, software programming language, computer requirements, peripheral requirements, trade name or recording systems, number of lines of resolution, and modulation frequency. For sound and videorecordings, information about the trade name or recording system(s) (e.g., VHS), modulation frequency and number of lines of resolution may be included.
Links to technical details relating to digital resources may also be recorded.
For software, computer requirements may include computer manufacturer and model, operating system, or memory requirements; peripheral requirements may include number of tape drives, number of disk or drum units, number of terminals, or other peripheral devices, support software, or related equipment.
|538||##$aData in extended ASCII character set.|
|538||##$aWritten in FORTRAN H with 1.5K source program statements.|
|538||##$aSystem requirements: IBM 360 and 370; 9K bytes of internal memory; OS SVS and OSMVS.|
|538||##$aDisk characteristics: Disk is single sided, double density, soft sectored.|
|538||##$aMode of access: Electronic mail via Internet and BITNET; also available via FTP.|
|538||##$aSystem requirements: IBM 2740 terminal with special narrow platen and form feeding features.|
|538||##$aMode of access: Internet.|
|538||##$aBenchmark for Faithful Digital Reproductions of Monographs and Serials. Version 1. December 2002$iDigital version conforms to:$uhttp://www.diglib.org/standards/bmarkfin.htm|
|538||##$aProject methodology for digital version$iTechnical details:$uhttp://www.columbia.edu/dlc/linglung/methodology.html|
|538||##$31-39(1927-1965)$aFiles for the images of individual pages are encoded in Aldus/Microsoft TIFF Version 6.0 using facsimile- compatible CCITT Group 4 compression.$5NIC|
|538||##$3v.1-49(1927-1975)$aMaster and use copy. Digital Master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.$uhttp://www.diglib.org/standards/bmarkfin.htm$5NIC$5ICU|