anchor.diff:                try_loop(Module, On, State, ComponentState)
       end.
   
  +-spec loop(module(), atom(), term(), component_state()) -> ok.
   loop(Module, On, State, {_Options, _Slowest, _BPState} = ComponentState) ->
       ?CALLING_RECEIVE(Module),
       receive Msg -> loop(Module, On, Msg, State, ComponentState)
       end.
  -    
  +
  +-spec loop(module(), atom(), comm:message(), term(), component_state()) -> ok.
   loop(Module, On, ReceivedMsg, State, {_Options, _Slowest, _BPState} = ComponentState) ->
       case ReceivedMsg of
           %%%%%%%%%%%%%%%%%%%%
  
positive.code:       Message, State,
        {Options, Slowest, {BPs, true, tl(Queue), BPStepped, StepperPid}}, hd(Queue), FromQueue).
  
  handle_bp_request_in_bp(Message, State, ComponentState, BPMsg, FromQueue) ->
      ?TRACE_BP("Handle bp request in bp ~p ~n", [BPMsg]),
      {Options, Slowest, BPState} = ComponentState,
  
negative.code:          change_handler/2, post_op/2]).
  -export([bp_set/3, bp_set_cond/3, bp_del/2]).
  -export([bp_step/1, bp_cont/1, bp_barrier/1]).
  
  -type bp_name() :: atom().
  
  -type bp_message() ::
            {'$gen_component', bp, breakpoint, step, pid()}
          | {'$gen_component', bp, breakpoint, cont}
          | {'$gen_component', bp, msg_in_bp_waiting, pid()}
          | {'$gen_component', bp, barrier}
          | {'$gen_component', bp, bp_set_cond, fun(), bp_name()}
          | {'$gen_component', bp, bp_set, comm:message_tag(), bp_name()}
          | {'$gen_component', bp, bp_del, bp_name()}.
  
  -type bp() ::
          {bp, MsgTag :: comm:message_tag(), bp_name()}
        | {bp_cond, Condition :: fun(), bp_name()}.
  
  -type bp_state() :: {[bp()],
                       boolean(),
                       [bp_message()],
                       boolean(),
                       pid() | unknown}.
  
  -type component_state() ::
          {Options :: list(), Slowest :: float(), bp_state()}.
  
  %% userdevguide-begin gen_component:behaviour
  -spec behaviour_info(atom()) -> [{atom(), arity()}] | undefined.
  