Designates condition handlers for special purposes.
  Event Flag Clears, sets, reads, and waits for event flags, and associates with event flag clusters.
  Information Returns information about the system, queues, jobs, processes, locks, and devices.
  Input/Output Performs I/O directly, without going through RMS.
  Lock Management Enables processes to coordinate access to shareable system resources.
  Logical Names Provides methods of accessing and maintaining pairs of character string logical
                              names and equivalence names.
  Memory
  Management

                              Increases or decreases available virtual memory, controls paging and swapping, and
                              creates and accesses shareable files of code or data.
  Process Control Creates, deletes, and controls execution of processes.
  Security Enhances the security of OpenVMS systems.
  Time and Timing Schedules events, and obtains and formats binary time values.