A flexible user validation language for time-sharing systems

Dartmouth College has recently developed a general purpose time-sharing system for its General Electric 635 computer, capable of supporting approximately 150 simultaneous users. The system provides computing services to some 3000 faculty and students on campus, as well as to more than 6000 teachers and students at over 30 colleges and secondary schools scattered throughout New England. At any given time during the school year, therefore, there are close to 10,000 potential users, of which some 4000 use the time-sharing system every month.