VMS Help RTL Routines, SMG$, SMG$RING_BELL, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 display-id

    OpenVMS usage:identifier
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    Specifies the virtual display for which the bell or buzzer
    sounds. The display-id argument is the address of an unsigned
    longword that contains the display identifier.

    The display identifier is returned by SMG$CREATE_VIRTUAL_DISPLAY.

 number-of-times

    OpenVMS usage:longword_signed
    type:         longword integer (signed)
    access:       read only
    mechanism:    by reference

    Specifies the number of times the bell or buzzer is sounded.
    The number-of-times argument is the address of a signed longword
    integer that contains the number of times the bell or buzzer is
    sounded. If number-of-times is omitted, 1 is used.