anchor.diff:  			{_, undefined} -> ok; % Skip entities that don't have clients.
   			{_, ClientInfo} ->
   				%TODO: Filter according to distance from TargetEntity or something.
  -				%?debug("Sending entity update for entity ~p to client ~p (entity ~p):~n~p",
  -					%[EntityID, ClientInfo, TargetEntityID, Update]),
  +				%warn("Sending entity update for entity ~p to client ~p (entity ~p):~n~p",
  +				%	[EntityID, ClientInfo, TargetEntityID, Update]),
   				pre_entity_comm:send_update(ClientInfo, EntityID, Update)
   		end
   	end, ok, State#state.entities),
  
positive.code: 			NewEntity;
  		_ ->
  			NewEntity#entity{
  				latest_update = lists:keymerge(1, Update, NewEntity#entity.latest_update)
  			}
  	end,
  	%handle_behavior_update(Update, Ctx),
  
negative.code: 			NewEntity;
  		_ ->
  			NewEntity#entity{
  				latest_update = merge_lists(Update, NewEntity#entity.latest_update)
  			}
  	end,
  	%handle_behavior_update(Update, Ctx),
  