anchor.diff:  %%conv(Cd, String) -> {ok, l2b(String)};
   conv(Cd, String) when is_binary(Cd) ->
       gen_server:call(?SERVER, {conv, Cd, l2b(String)}, infinity).
  +
  +conv_chunked(Cd, String) when is_binary(Cd) ->
  +	gen_server:call(?SERVER, {conv_chunked, Cd, l2b(String)}, infinity).
   
   %%close(Cd) -> ok;
   close(Cd) when is_binary(Cd) ->
  
positive.code: %%%----------------------------------------------------------------------
  %%% Internal functions
  %%%----------------------------------------------------------------------
  
  load_path(File) ->
  	case lists:zf(fun(Ebin) ->
  
negative.code:     Msg = <<?IV_CONV,CdLen:16,Cd/binary,BufLen:16,Buf/binary>>,
      Reply = call_drv(S#state.port, Msg),
      {reply, Reply, S};
  
  handle_call({conv_chunked, Cd, Buf}, _, S) ->
  	Reply = conv_chunked(Cd, Buf, [], S),
  	{reply, Reply, S};
  
  %%
  handle_call({close, Cd}, _, S) ->
      CdLen  = byte_size(Cd),
  