Markup block - Gen<None> - 30 - (0:0,0)
    Markup span - Gen<Markup> - [Foo Baz] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:3
        HtmlSymbolType.Text;[Foo];
        HtmlSymbolType.WhiteSpace;[ ];
        HtmlSymbolType.Text;[Baz];
    HtmlComment block - Gen<None> - 10 - (7:0,7)
        Markup span - Gen<Markup> - [<!--] - SpanEditHandler;Accepts:None - (7:0,7) - Symbols:3
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Bang;[!];
            HtmlSymbolType.DoubleHyphen;[--];
        Markup span - Gen<Markup> - [Foo] - SpanEditHandler;Accepts:WhiteSpace - (11:0,11) - Symbols:1
            HtmlSymbolType.Text;[Foo];
        Markup span - Gen<Markup> - [-->] - SpanEditHandler;Accepts:None - (14:0,14) - Symbols:2
            HtmlSymbolType.DoubleHyphen;[--];
            HtmlSymbolType.CloseAngle;[>];
    Markup span - Gen<Markup> - [Bar] - SpanEditHandler;Accepts:Any - (17:0,17) - Symbols:1
        HtmlSymbolType.Text;[Bar];
    Markup span - Gen<Markup> - [<!--F> Qux] - SpanEditHandler;Accepts:Any - (20:0,20) - Symbols:7
        HtmlSymbolType.OpenAngle;[<];
        HtmlSymbolType.Bang;[!];
        HtmlSymbolType.DoubleHyphen;[--];
        HtmlSymbolType.Text;[F];
        HtmlSymbolType.CloseAngle;[>];
        HtmlSymbolType.WhiteSpace;[ ];
        HtmlSymbolType.Text;[Qux];
