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.

 bufdes

    OpenVMS usage:char_string
    type:         character string
    access:       read only
    mechanism:    by descriptor
    Record to be written to the library. The bufdes argument is the
    address of a string descriptor pointing to the buffer containing
    the output record. On Integrity servers and Alpha libraries, the
    symbolic maximum record size is ELBR$_MAXRECSIZ.

 txtrfa

    OpenVMS usage:vector_longword_unsigned
    type:         longword (unsigned)
    access:       write only
    mechanism:    by reference
    Record's file address (RFA) of the module header. The txtrfa
    argument is the address of a 2-longword array receiving the
    RFA of the newly created module header upon the first call to
    LBR$PUT_RECORD.

 mod_size

    OpenVMS usage:byte_count
    type:         longword (unsigned)
    access:       read only
    mechanism:    by value
    The value from mod_size is read on the first call to this routine
    and ignored otherwise. The value specifies the size of the module
    to be entered so that contiguous space is allocated within the
    library for that module. This argument is ignored for non-ELF
    object libraries and for data-reduced ELF object libraries.
    The LBR$PUT_END routine is still required to terminate the byte
    stream and close off the module.