VMS Help SET, CONTROL, Examples  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    1.$ SET NOCONTROL=Y

      The SET CONTROL command in this example disables the Ctrl/Y
      function as well as most Ctrl/C functions.

    2.$ SET CONTROL=T

      The SET CONTROL command in this example enables the Ctrl/T
      function.

    3.$ SET NOCONTROL=(T,Y)

      The SET CONTROL command in this example disables both the
      Ctrl/T and Ctrl/Y functions.

    4.$ <Ctrl/T>
      NODE22::SMITH 16:21:04 (DCL) CPU=00:03:29.39 PF=14802 IO=18652 MEM=68
      $ SET NOCONTROL=T
      $ <Ctrl/T>

      As shown in this example, when you press Ctrl/T, the system
      displays the appropriate information. The SET NOCONTROL=T
      command disables the Ctrl/T function. Now when you press
      Ctrl/T, no information is displayed.