Hi Ziggy,
"Visualization" generates a Graph
.
ds = CreateDataStructure["BinaryTree", 1 -> {2 -> {5, Null}, 8}];
viz = ds["Visualization"]
Head@viz
(* Graph *)
Any Graph
/ Graphics
options can be applied to it
Graph[vis,
ImageSize -> {200, 200},
AspectRatio -> 1/2,
VertexShapeFunction -> "Square",
VertexSize -> .15,
VertexStyle -> Red,
VertexLabels -> "Name"]