Library /sys$common/syshlp/TPUHELP.HLB  —  SET(GLOBAL_SELECT_GRAB)
  SET (GLOBAL_SELECT_GRAB)

  Specifies the program or learn sequence DECTPU should execute whenever it
  automatically grabs ownership of the PRIMARY selection.

  Syntax

     SET (GLOBAL_SELECT_GRAB, SCREEN [, {program_source | NONE}])

  Parameters

     SCREEN               A keyword used for compatibility with future
                          versions of DECTPU.

     program_source       A string, buffer, range, learn sequence, or
                          program specifying the grab procedure.  If you do
                          not specify this parameter, DECTPU deletes the
                          current global selection grab routine; thereafter,
                          your application is not informed when DECTPU grabs
                          the PRIMARY global selection.

     NONE                 A keyword instructing DECTPU to delete the current
                          global selection grab routine.
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