anchor.diff:  ref_edge(RefA, RefB) ->
     io_lib:format("    \"~p\" -> \"~p\"",[RefA,RefB]).
   
  +dref_edge(RefA, RefB) ->
  +  io_lib:format("    \"~p\":e -> \"~p\":e",[RefA,RefB]).
  +
   graph_close(#logger_state{graph_data = undefined}) -> ok;
   graph_close(#logger_state{graph_data = {GraphFile, _, _}}) ->
     io:format(
  
positive.code: 
  graph_command(_Command, #logger_state{graph_data = undefined} = State) -> State;
  graph_command(Command, State) ->
    #logger_state{graph_data = {GraphFile, Parent, Sibling} = Graph} = State,
    NewGraph =
      case Command of
        {new_node, Ref, I, Event, BoundConsumed} ->
  
negative.code:   orddict:fold(Fold, ok, Streams).
  
  print_stream(Tag, Buffer, Output) ->
    io:format(Output, tag_to_filename(Tag) ++ ":~n", []),
    io:format(Output, "~s~n", [Buffer]),
    case Tag =/= race of
      true ->
  