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

 semaphore-id

    OpenVMS usage identifier
    type          longword (unsigned)
    access        read only
    mechanism     by reference
    Identifier of the semaphore. The semaphore-id argument is the
    address of an unsigned longword containing the identifier.

    Semaphore-id is returned by PPL$CREATE_SEMAPHORE.