chromium/docs/accessibility/browser/figures/cover_flow.gv

digraph graphname {
    graph [fontname = "helvetica", fontsize=11];
    node [shape="box", fontname = "helvetica", fontsize=11];

    subgraph cluster_ax_tree {
        label = "Accessibility Tree";
		
        a [label="Window"];
        a -> b;
        b [label="ComboBox 'Cover Flow Control'"];
	b -> b0;
	b -> b1;
	b -> b2;
	b0 [label="Option 'Album 1'"];
	b1 [label="Option 'Album 2'"];
	b2 [label="Option 'Album 3'"];
    }

    subgraph cluster_ui_tree {
        label = "Platform UI Object Tree";

        A [label="Window"];
        A -> B;
        B [label="Cover Flow Control"];
    }
}