Markup block - Gen<None> - 31 - (0:0,0)
    Tag block - Gen<None> - 5 - (0:0,0)
        Markup span - Gen<Markup> - [<foo>] - SpanEditHandler;Accepts:None - (0:0,0) - Symbols:3
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Text;[foo];
            HtmlSymbolType.CloseAngle;[>];
    HtmlComment block - Gen<None> - 17 - (5:0,5)
        Markup span - Gen<Markup> - [<!--] - SpanEditHandler;Accepts:None - (5:0,5) - Symbols:3
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Bang;[!];
            HtmlSymbolType.DoubleHyphen;[--];
        Markup span - Gen<Markup> - [<foo></bar] - SpanEditHandler;Accepts:WhiteSpace - (9:0,9) - Symbols:6
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Text;[foo];
            HtmlSymbolType.CloseAngle;[>];
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.ForwardSlash;[/];
            HtmlSymbolType.Text;[bar];
        Markup span - Gen<Markup> - [-->] - SpanEditHandler;Accepts:None - (19:0,19) - Symbols:2
            HtmlSymbolType.DoubleHyphen;[--];
            HtmlSymbolType.CloseAngle;[>];
    Markup span - Gen<Markup> - [-->] - SpanEditHandler;Accepts:None - (22:0,22) - Symbols:2
        HtmlSymbolType.DoubleHyphen;[--];
        HtmlSymbolType.CloseAngle;[>];
    Tag block - Gen<None> - 6 - (25:0,25)
        Markup span - Gen<Markup> - [</foo>] - SpanEditHandler;Accepts:None - (25:0,25) - Symbols:4
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.ForwardSlash;[/];
            HtmlSymbolType.Text;[foo];
            HtmlSymbolType.CloseAngle;[>];
