Specifies the film structure and volume of compact read only optical disks (CD-ROM) for the interchange of information between users of information processing systems. Also specifies the placement of file; the relationship among volumes of a volume set; the attributes of the volume and the descriptors recorded on it; record structures meant for use in the output or input data streams of an application program when these data streams are required to be organized as sets of records; two nested levels of implementation; three nested levels of medium exchange and requirements for the processing systems, to allow information to be interchanged between different systems. Also covers the conformance of a CD-ROM and of an information processing system.