scope:

This International Standard specifies file structures for data interchange on magnetic tape cassettes. To provide for the range of sophistication in equipment and applications, three systems are specified: a) the basic system, employing only hardware-defined separators to structure the files; b) the compact system, employing special data blocks with information content (labels), which are capable of being recorded using only numeric equipment; c) the extended system, employing the magnetic tape labelling system specified in ISO 1001 together with new labels, to define a more comprehensive labelling system.