anchor.diff:  
   react_to_env_C110(P_latest, #ch_mgr{name=MyName} = S) ->
       ?REACT(c110),
  -    Extra_todo = [],
  +    %% Extra_todo = [],
  +    Extra_todo = get(xxx_hack),
       %% Extra_todo = [{hee, lists:reverse(get(react))}],
       P_latest2 = machi_projection:update_dbg2(P_latest, Extra_todo),
   
  
positive.code:                                     %% If there's no overlap at all between
                                      %% UPI_list1 & UPI_list2, then we're OK
                                      %% here.
                                      io:format(user, "QQQ Oops_check_UPI_2_suffix=~w, ", [Oops_check_UPI_2_suffix]),
                                      true;
                                 true ->
                                      exit({upi_2_suffix_error, UPI_2_suffix})
  
negative.code:     I_am_UPI_in_newprop_p = lists:member(MyName, P_newprop#projection_v1.upi),
      I_am_Repairing_in_latest_p = lists:member(MyName,
                                               P_latest#projection_v1.repairing),
      %% TODO: ShortCircuit_p was a bad idea, I'm nearly sure. Get rid of it.
      ShortCircuit_p = false,
      Current_sane_p = projection_transition_is_sane(P_current, P_latest,
                                                     MyName),
      put(xxx_hack, [{p_current, machi_projection:make_summary(P_current)},
                     {epoch_compare, P_latest#projection_v1.epoch_number > P_current#projection_v1.epoch_number},
                     {i_am_upi_in_newprop_p, I_am_UPI_in_newprop_p},
                     {i_am_repairing_in_latest_p, I_am_Repairing_in_latest_p},
                     {shortcircuit_p, ShortCircuit_p}]),
      case {ShortCircuit_p, Current_sane_p} of
          _ when P_current#projection_v1.epoch_number == 0 ->
              %% Epoch == 0 is reserved for first-time, just booting conditions.
  