This standard specifies the characteristics of 130-mm optical disk cartridges (ODC) of the type providing for information to be written once and read many times. ANSI X3.214:1992 specifies - definitions of essential concepts, - the environment in which the characteristics shall be tested, - the environments in which the cartridge shall be operated and stored, - the mechanical, physical, and dimensional characteristics of the case and of the optical disk, - the optical characteristics and the recording characteristics for recording the information once and for reading it many times. so as to provide physical interchangeability between date processing systems.