This U.S. industry comprises establishments primarily engaged in mass reproducing audio and video material on magnetic or optical media. Examples of products mass reproduced by these establishments are audio compact discs, prerecorded audio and video cassettes, and laser discs. Designing, developing, and publishing prepackaged software--are classified in Industry 511210, Software Publishers; Audio, motion picture and/or video production and/or distribution--are classified in Subsector 512, Motion Picture and Sound Recording Industries; and Manufacturing blank audio and video tape, blank diskettes, and blank optical discs--are classified in U.S. Industry 334613, Magnetic and Optical Recording Media Manufacturing.