anchor.diff:      {noreply, State};
   
   handle_message({shuffle, Exchange, TTL, Sender},
  -               #state{active=Active0,
  +               #state{myself=Myself,
  +                      active=Active0,
                         passive=Passive0,
                         connections=Connections}=State0) ->
       %% Forward to random member of the active view.
  
positive.code:         Random ->
              %% Forward shuffle request.
              do_send_message(Random,
                              {shuffle, Exchange, arwl(), myself()},
                              Connections)
      end,
  
  
negative.code:                                                      length(Exchange)),
  
              do_send_message(Sender,
                              {shuffle_reply, ResponseExchange, Myself},
                              Connections),
  
              merge_exchange(Exchange, State0)
  