VMS Help NCS Routines, NCS$CONVERT, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Using the specified conversion function, the NCS$CONVERT routine
    converts the source string and stores the result in the specified
    destination. Optionally, the calling program can request that the
    routine return the length of the converted string as well as the
    number of characters that were not fully converted.