typedef  struct cn_funcs {
    int16  cdecl  (* CNkick) (void *cn);
    int16  cdecl  (* CNbyte_count) (void *cn);
    int16  cdecl  (* CNget_char) (void *cn);
    NDB *  cdecl  (* CNget_NDB) (void *cn);
    int16  cdecl  (* CNget_block) (void *cn, void *buf,
                       int16 len);
    CIB *  cdecl  (* CNgetinfo) (void *cn);
    int16  cdecl  (* CNgets) (void *cn, char *buf, 
                       int16 len, char delim);
 } CN_FUNCS;