GEORGE 3-A General Purpose Time Sharing and Operating System An Operating System is described which will run on a wide variety of configurations of the I. 1900, and can handle a large number of online console users while at the same time running several off line (background) jobs. The system is not oriented towards either mode and can be either a batch processing system (such as the ATLAS Supervisor, IBSYS, or GECOS), or a multiaccess system (resembling, to the user, CTSS or MULTICS), or both simultaneously, depending on the installation, which can adjust the Schedulers. Both online users and off line jobs use a common Command Language. The system includes a Multilevel device-independent File Store. CACM November, 1967 Oestreicher, M. D. Bailey, M. J. Strauss, J. I. CA671101 JB February 27, 1978 1:47 PM 1519 5 1519 1519 5 1519 1519 5 1519