anchor.diff:          [{_, Pid}] ->
               Pid;
           [] ->
  -            {ok, Pid} = gen_server:call(?SERVER, {register, host, Name}),
  -            Pid
  +            gen_server:call(?SERVER, {register, host, Name})
       end.
   
   %%--------------------------------------------------------------------
  
positive.code: 
  handle_call({register, zone, Name}, _From, State) ->
      case ets:lookup(?ZONES, Name) of
          undefined ->
              {ok, Pid} = tachyon_kstat_zone:start(Name),
              ets:insert(?ZONES, {Name, Pid}),
              {reply, Pid, State};
  
negative.code:         [{_, Pid}] ->
              Pid;
          [] ->
              gen_server:call(?SERVER, {register, zone, Name})
      end;
  
  where(host, Name) ->
  