1.$ CONFIGURE GALAXY
      Displays the GCU's graphical user interface. If the system is
      currently configured as an OpenVMS Galaxy, the active system
      configuration is displayed.
    2.$ CONFIGURE GALAXY model.GCM
      Displays the GCU's graphical user interface. The specified
      OpenVMS Galaxy Configuration Model is loaded and displayed, but
      does not become the active configuration until the user chooses
      to engage it.
    3.$ CONFIGURE GALAXY/ENGAGE model.GCM
      Invokes the GCU command line interface to engage the specified
      OpenVMS Galaxy Configuration Model without displaying the GCU's
      graphical user interface.
    4.$ CONFIGURE GALAXY/ENGAGE/VIEW model.GCM
      Invokes the GCU command line interface to engage the specified
      OpenVMS Galaxy Configuration Model and display the GCU's
      graphical user interface.