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

 library_index

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Library control index returned by the LBR$INI_CONTROL routine.
    The library_index argument is the address of the longword that
    contains the index.

 key_name

    OpenVMS usage:char_string
    type:         character string
    access:       read only
    mechanism:    by descriptor
    Library key (for libraries with ASCII keys). The key_name
    argument is the address of a string descriptor for the key.

 key_name

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Library key (for libraries with binary keys). The key_name
    argument is the address of an unsigned longword value for the
    key.

 oldrfa

    OpenVMS usage:vector_longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Old record file address (RFA). The oldrfa argument is the address
    of a 2-longword array containing the original RFA (returned by
    LBR$LOOKUP_KEY) of the module header associated with the key you
    are replacing.

 newrfa

    OpenVMS usage:vector_longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    New RFA. The newrfa argument is the address of a 2-longword array
    containing the RFA (returned by LBR$PUT_RECORD) of the module
    header associated with the new key.