规定一致性测试和参考驱动的条件；盒带的机械和物理特性，以便在数据处理系统之间提供机械互换性；磁盘上信息的格式，包括浮雕和用户书写；磁盘上浮雕信息的特征；磁盘的磁光特性，使数据处理系统能够将数据写入磁盘；用户在磁盘上写入数据的最低质量，使数据处理系统能够从磁盘读取数据。

Specifies the conditions for conformance testing and the Reference Drive; the mechanical and physical characteristics of the cartridge, so as to provide mechanical interchangeability between data processing systems; the format of the information on the disk, both embossed and user-written; the characteristics of the embossed information on the disk; the magneto-optical characteristics of the disk, enabling data processing systems to write data onto the disk; the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk.