This industry comprises establishments primarily engaged in computer software publishing or publishing and reproduction. Establishments in this industry carry out operations necessary for producing and distributing computer software, such as designing, providing documentation, assisting in installation, and providing support services to software purchasers. These establishments may design, develop, and publish, or publish only. Cross-References. Establishments primarily engaged in-- ? Reselling packaged software--are classified in Sector 42, Wholesale Trade or Sector 44-45, Retail Trade; ? Providing access to software for clients from a central host site--are classified in Industry 518210, Data Processing, Hosting, and Related Services; ? Designing software to meet the needs of specific users--are classified in U.S. Industry 541511, Custom Computer Programming Services; and ? Mass duplication of software--are classified in U.S. Industry 334611, Software Reproducing.