anchor.diff:          N = lists:delete(CState, CList),
           [{Id, N} | Acc]
       end, [], Chans).
  +
  +get_acctrl() ->
  +    {ok, V} = application:get_env(supercast, acctrl_module), V.
  
positive.code: %% GEN_SERVER CALLBACKS
  %%-------------------------------------------------------------
  init([]) ->
      {ok, AcctrlMod}    = application:get_env(supercast, acctrl_module),
      {ok, #state{
              acctrl     = AcctrlMod,
              chans      = []
          }
      }.
  
  handle_call({client_is_registered, Chan, CState}, _F,
          #state{chans = Chans} = S) ->
  
negative.code:             {noreply, S}
      end;
  
  handle_cast({multicast, Chan, Perm, Pdu}, #state{chans = Chans} = S) ->
      % the chan have allready been initialized?
      case lists:keyfind(Chan, 1, Chans) of
          % no do nothing
  