anchor.diff:  handle_call({new, Queue}, _From, State) ->
       case dict:is_key(Queue, State) of
           true ->
  -            {reply, {error, "Queue Exists."}, State};
  +            {reply, {error, queue_already_exists}, State};
           false ->
               {reply, ok, dict:store(Queue, diskqueue:newqueue(Queue), State)}
       end;
  
positive.code:                          {pop, Value} ->
                               Value
                       after 10000 ->
                               {error, "Timed out."}
                       end;
                   false ->
                       {error, "Invalid Queue."}
               end,
      {reply, Return, State}.
  
  
negative.code:                      dict:fetch(Queue, State) ! {push, self(), What},
                       ok;
                   false ->
                       {error, invalid_queue}
               end,
      {reply, Return, State};
  
  