anchor.diff:  %%    {ok, [MbrAndPos|tl(MbrAndPosList)]}.
       % XXX XXX vmx: NOT OUTLIERS ARE INSERTED ATM
       %{ok, RootNodes2}.
  -?debugVal(RootNodes2),
       {ok, RootNodes2, NewHeight+HeightDiff, HeightDiff}.
   
   seedtree_write(_Fd, [], InsertHeight, Acc) ->
  -    ?debugMsg("No more siblings!!!!!!!!!!!!!!!!!!"),
  +    %?debugMsg("No more siblings!!!!!!!!!!!!!!!!!!"),
       {no_more_siblings, Acc};
   %seedtree_write(_Fd, [{_,_,Children}=H|_T]=Leafs, _Acc) when is_tuple(Children) ->
   %seedtree_write(_Fd, [{_,_,Children}=H|_T]=Leafs, _Acc) when is_tuple(H) ->
  
positive.code:     %    and not up to the root (as changes might also come from other
      %    siblings).
  
      ?debugVal(NewChildrenPos2),
      %% XXX vmx: I temporarily write this node to disk just for debugging
      %% purpose, this should still be there in the final code.
      % XXX vmx (2010-12-08): using hd() isn't enough.
  
negative.code:                 PosList = lists:append([Pos || {_, _, Pos} <- Acc]),
                  load_nodes(Fd, PosList)
              end, NodesList, lists:seq(1, NewHeightDiff)),
              %?debugVal(Foo),
              Foo
          end,
  
  