anchor.diff:              "MBR intersection (W and E edge (middle))"),
       etap:is(vtree:intersect(Mbr1_2, {-10, -9, 18, 10}), true,
               "MBR intersection (W and E edge (top))"),
  -    etap:is(vtree:intersect(Mbr1_2, {-25, -4, 2, 12}), true, 
  +    etap:is(vtree:intersect(Mbr1_2, {-25, -4, 2, 12}), true,
               "MBR intersection (N and S edge (left))"),
       etap:is(vtree:intersect(Mbr1_2, {-15, -4, 2, 12}), true,
               "MBR intersection (N and S edge (middle))"),
  
positive.code:             not_flipped,
              "Not flipped Bbox"),
      ok.
      
  
  test_area() ->
      etap:plan(5),
  
negative.code:                   {ok, Tree1Node1_2_3_4_5},
              "Insert a nodes into a full leaf node (root node)"),
      ok.
  
  
  test_within() ->
      etap:plan(4),
  