SET (GLOBAL_SELECT_GRAB)

 Specifies the program or learn sequence VAXTPU 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 VAXTPU.

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

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