anchor.diff:  
   
   xref([Dir]) ->
  -    io:format("~p~n", [xref:d(Dir)]),
  +    debug_format("~p~n", [xref:d(Dir)]),
       init:stop().
   
   
  
positive.code: eprof() ->
      eprof:start(),
      eprof:profile(pids()),
      io:format("Ok run some traffic \n", []).
  
  
  
  
negative.code:     fail(Failure).
  
  fail({assert,File,Line,Message}) ->
      debug_format(user, "Assertion FAILED ~p:~p, pid ~w exiting: ~p~n",
                [File, Line, self(), Message]),
      erlang:error(assertion_failed);
  fail({alert,File,Line,Message}) ->
      debug_format(user, "Assert WARNING ~p:~p, pid ~w: ~p~n",
                [File, Line, self(), Message]),
      ok;
  fail({{debug,Fstr}, File,Line,Fmt, Args}) ->
  