anchor.diff:  -define(REPAIR_START_STABILITY_TIME, 10).
   -endif. % TEST
   
  --define(RETURN2(X), begin put(why2, [?LINE|get(why2)]), X end).
  +-define(RETURN2(X), begin (catch put(why2, [?LINE|get(why2)])), X end).
   
   %% API
   -export([start_link/2, start_link/3, stop/1, ping/1,
  
positive.code:            P1, P2, RelativeToServer, RetrospectiveP) of
          true ->
              %% Must be a strictly increasing epoch.
              Epoch2 > Epoch1;
          Else ->
              Else
      end.
  
  projection_transition_is_sane_except_si_epoch(
  
negative.code:                 InnerInfo = [{inner_summary,
                                machi_projection:make_summary(P_inner2)}],
                  DbgX = replace(P_newprop3#projection_v1.dbg, InnerInfo),
                  ?REACT({a30, ?LINE, DbgX}),
                  {P_newprop3#projection_v1{dbg=DbgX,
                                            inner=P_inner2}, S_i};
              _ ->
  