anchor.diff:              ok
       end.
   
  --spec annotation(event()) -> {tag(), list(), list()} | {binary(), list(any())} | ignore.
  +-spec annotation(command()) -> {tag(), list(), list()}  | ignore.
   annotation({dist_do, Scenario, Start, End, Nodes, Comment}) ->
       {<<"amoc start">>, "Scenario: ~p. comment: ~p Start: ~p. End: ~p. Nodes: ~p.",
        [Scenario, Comment, Start, End, length(Nodes)]};
  
positive.code: terminate(_Reason, _State) ->
      ok.
  
  -spec code_change(any(), any(), any()) -> {ok, state_annotations()}.
  code_change(_OldVsn, State, _Extra) ->
      {ok, State}.
  
  
negative.code:     end,
      {ok, State}.
  
  -spec handle_call(any(), state()) -> {ok, ok, state()}.
  handle_call(_Request, State) ->
      {ok, ok, State}.
  
  -spec handle_info(any(), state()) -> {ok, state()}.
  handle_info(_Info, State) ->
      {ok, State}.
  
  