anchor.diff:  %%====================================================================
   %% Internal functions
   %%====================================================================
  +find_target(D, Name) ->
  +    case bcoding:search_dict({string, Name}, D) of
  +	{ok, X} ->
  +	    X
  +    end.
  +
  +get_info(Torrent) ->
  +    find_target(Torrent, "info").
  +
   
   split_into_chunks(_N, Accum, []) ->
       Accum;
  
positive.code: 
  %% API
  -export([get_piece_length/1, get_pieces/1, get_url/1, get_infohash/1,
  	 parse/1, get_files/1]).
  
  %%====================================================================
  %% API
  
negative.code: %% Description: Search a torrent file, return the piece length
  %%--------------------------------------------------------------------
  get_piece_length(Torrent) ->
      {integer, Size} = find_target(get_info(Torrent), "piece length"),
      Size.
  
  %%--------------------------------------------------------------------
  %% Function: get_pieces/1
  %% Description: Search a torrent, return pieces as a list
  %%--------------------------------------------------------------------
  get_pieces(Torrent) ->
      case find_target(get_info(Torrent), "pieces") of
  	{string, Ps} ->
  	    lists:map(fun(Str) -> list_to_binary(Str) end,
  		      split_into_chunks(20, [], Ps))
      end.
  
  %%--------------------------------------------------------------------
  %% Function: get_files/1
  %% Description: Get a file list from the torrent
  %%--------------------------------------------------------------------
  get_files(Torrent) ->
      find_target(get_info(Torrent), "files").
  
  %%--------------------------------------------------------------------
  %% Function: get_files/1
  %% Description: Get the name of a torrent
  %%--------------------------------------------------------------------
  get_name(Torrent) ->
      {string, N} = find_target(get_info(Torrent), "name"),
      N.
  
  %%--------------------------------------------------------------------
  %% Function: get_url/1
  