The SAS System is an integrated suite of software for enterprise-wide information delivery. The functionality of the system is built around the four data-driven tasks common to virtually any application -- data access, data management, data analysis and data presentation. Applications of the SAS System include executive information systems; data entry, retrieval, and management; report writing and graphics; statistical and mathematical analysis; business planning, forecasting, and decision support; operations research and project management; statistical quality improvement; computer performance evaluation; and applications development.