This major group includes establishments primarily engaged in rendering services, not elsewhere classified, to business establishments on a contract or fee basis, such as advertising, credit reporting, collection of claims, mailing, reproduction, stenographic, news syndicates, computer programming, photocopying, duplicating, data processing, services to buildings, and help supply services. Establishments primarily engaged in providing engineering, accounting, research, management, and related services are classified in Major Group 87. Establishments which provide specialized services closely allied to activities covered in other divisions are classified in such divisions.