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

    The NCS$END_CF routine indicates to NCS that the calling program
    no longer needs the conversion function. NCS releases the memory
    space allocated for the coversion function and sets the value of
    the longword identifier to 0.