/sys$common/syshlp/helplib.hlb NCS Routines, NCS$END_CF, Argument  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 cf_id

    OpenVMS usage:identifier
    type:         longword integer (unsigned)
    access:       modify
    mechanism:    by reference
    Address of a longword that NCS uses to store a nonzero value
    identifying a conversion function.

    The cf_id argument is required.