SET (GLOBAL_SELECT_UNGRAB)

 Specifies the program or learn sequence VAXTPU should execute whenever it
 loses ownership of a global selection.

 Syntax

    SET (GLOBAL_SELECT_UNGRAB, SCREEN, {program_source | NONE})

 Parameters

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

    program_source       A string, buffer, range, learn sequence, or
                         program specifying the ungrab procedure.  If you
                         do not specify this parameter, VAXTPU deletes the
                         current global selection ungrab routine;
                         thereafter, your application is not informed when
                         VAXTPU loses ownership of a global selection.

    NONE                 A keyword instructing VAXTPU to delete the current
                         global selection ungrab routine.