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

 keyboard-id

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

    Specifies the virtual keyboard to be deleted. The keyboard-id
    argument is the address of an unsigned longword that contains the
    keyboard identifier.

    The keyboard identifier is returned by SMG$CREATE_VIRTUAL_
    KEYBOARD.