anchor.diff:          true ->
               case From of
                   {server, undefined, {Address, Ref}} ->
  -                    gen_server:reply({Address, Ref}, {ok, {Id, Type, Value, Next}});
  +                    gen_server:reply({Address, Ref},
  +                                     {ok, {Id, Type, Value, Next}});
                   {fsm, undefined, Address} ->
  -                    gen_fsm:send_event(Address, {ok, undefined, {Id, Type, Value, Next}});
  +                    gen_fsm:send_event(Address,
  +                                       {ok, undefined,
  +                                        {Id, Type, Value, Next}});
                   _ ->
                       From ! Result
               end,
  
positive.code:     %% Update with result.
      {ok, _} = BindFun(AccId, AccValue, Variables),
  
      internal_fold_harness(Variables, Id, Function, AccId, BindFun,
                            ReadFun, Value).
  
  %% @doc Send responses to waiting threads, via messages.
  %%
  
negative.code:                 {server, undefined, {Address, Ref}} ->
                      gen_server:reply({Address, Ref}, {ok, RThreshold});
                  {fsm, undefined, Address} ->
                      gen_fsm:send_event(Address,
                                         {ok, undefined, RThreshold});
                  _ ->
                      From ! Result
              end,
  