Markup block - Gen<None> - 14 - (0:0,0)
    Markup span - Gen<Markup> - [Foo ] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:2
        HtmlSymbolType.Text;[Foo];
        HtmlSymbolType.WhiteSpace;[ ];
    Tag block - Gen<None> - 6 - (4:0,4)
        Markup span - Gen<Markup> - [</div>] - SpanEditHandler;Accepts:Any - (4:0,4) - Symbols:4
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.ForwardSlash;[/];
            HtmlSymbolType.Text;[div];
            HtmlSymbolType.CloseAngle;[>];
    Markup span - Gen<Markup> - [ Bar] - SpanEditHandler;Accepts:Any - (10:0,10) - Symbols:2
        HtmlSymbolType.WhiteSpace;[ ];
        HtmlSymbolType.Text;[Bar];
