anchor.diff:  
   %% -------------------------------------------------------------------
   
  +%% @hidden
   handle_info(_, State) ->
       {noreply, State}.
   
   %% -------------------------------------------------------------------
   
  +%% @hidden
   terminate(Reason, _State) ->
   	?info("Terminating due to ~p.", [Reason]),
   	ok.
   
  +%% @hidden
   code_change(_OldVersion, State, _Extra) ->
   	{reply, State}.
  
positive.code: %%% @doc Dictates the background content loaded by the client, and dispatches events for entities in a given zone. (?)
  %%% FIXME: This module should not actually be used! It's a useful example of how to build a channel, though.
  
  -module(pre_channel_entity).
  -behavior(gen_server).
  
negative.code: %% gen_server
  %% -------------------------------------------------------------------
  
  %% @hidden
  init(supervisor_start) ->
  	ChildSpec = {
  		?MODULE,
  