SCOPE AND FIELD OF APPLICATION This International Standard specifies the track format characteristics for the six-disk pack to be used for data interchange (see IS0 2864). The 7-bit coded character set specified in IS0 646 has been adopted@ though@ by agreement between the interchange parties@ the 7-bit or 8-bit extensions specified In IS0 2022 may be used.
INCITS/ISO/IEC 3561:1976 history
1976INCITS/ISO/IEC 3561:1976 Information processing - Interchangeable magnetic six-disk pack - Track format