anchor.diff:  
   
   seedtree_insert_list_test() ->
  -    {ok, {RootPos, Fd}} = vtree_test:build_random_tree("/tmp/randtree.bin", 20),
  +    {ok, {Fd, {RootPos, _}}} = vtree_test:build_random_tree(
  +            "/tmp/randtree.bin", 20),
       ?debugVal(RootPos),
       SeedTree = seedtree_init(Fd, RootPos, 3),
       {NodeId, {NodeMbr, NodeMeta, NodeData}} = vtree_test:random_node(),
  
positive.code: %    %{ok, Acc3}.
  %    {Info, Acc3}.
  
  seedtree_write_test() ->
      TargetTreeNodeNum = 25,
      TargetTreeHeight = log_n_ceil(?MAX_FILLED, TargetTreeNodeNum),
      {ok, {RootPos, Fd}} = vtree_test:build_random_tree(
              "/tmp/seedtree_write.bin", TargetTreeNodeNum),
  
      ?debugVal(RootPos),
  
negative.code: 
  
  lookup_path_test() ->
      {ok, {Fd, {RootPos, _}}} = vtree_test:build_random_tree(
              "/tmp/randtree.bin", 20),
      ?debugVal(RootPos),
      % Not inside 1st level
      EntryPath1 = lookup_path(Fd, RootPos, {1,3,2,4}, 2),
  