anchor.diff:      NewChildrenPos2 = if
       % Input tree can be inserted as-is into the target tree
       HeightDiff == 0 ->
  +    %?debugMsg("insert as-is"),
           {OmtTree, OmtHeight} = omt_load(New, ?MAX_FILLED),
           %?debugVal(OmtHeight),
           %?debugVal(OmtTree),
  
positive.code:         %[{Mbr, Pos2}];
          % XXX vmx: TODO make seedtree_write to return the MBR as well
          %{ok, MbrAndPosList} = seedtree_write(Fd, Seedtree2, InsertHeight+1),
          {ok, NodesList, _NewHeight} = seedtree_write(Fd, Seedtree2,
                  InsertHeight+1),
          MbrAndPosList = [{Mbr, Pos} || {Mbr, _, Pos} <- NodesList],
          %?debugVal(MbrAndPosList),
  
  
negative.code:     % Transform the nodes to repack from normal ones to tuples (consisting
      % of the MBR and the position where the node in the file (or the nodes
      % themselves if they are leaf nodes)
      ToRepackMbrAndPos = lists:zipwith(fun({Mbr, _, _}, Pos) ->
          {Mbr, Pos}
      end, NodesToRepack, PosToRepack2),
  