Defines the multimedia command set extensions for all classes of SCSI devices. Commands specified define standard access and control of those features of the device that are used in multimedia applications (audio, video, animation). The entire standard command set available for a subject device is fully specified by the clause/clauses of this standard pertaining to that device, the applicable clauses of SCSI-3 Primary commands, and any additional command set standards pertaining to the subject device as documented in the SCSI-3 family of standards.