Information Research Services Updated: 30 January 1998
        VMS V4 supported the new VAX 8600 processor, MicroVAX I and II, and VAXstation I and II. V4 features included VAXclusters, connection manager, distributed lock manager, distributed file system (F11BXQP), security enhancements, command line editing and command recall, local area terminal server, implementation of access control lists, cluster wide operator control and variable prompt strings.