Markup block - Gen<None> - 24 - (0:0,0)
    Tag block - Gen<None> - 5 - (0:0,0)
        Markup span - Gen<Markup> - [<foo>] - SpanEditHandler;Accepts:Any - (0:0,0) - Tokens:3
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Text;[foo];
            HtmlTokenType.CloseAngle;[>];
    HtmlComment block - Gen<None> - 13 - (5:0,5)
        Markup span - Gen<Markup> - [<!--] - SpanEditHandler;Accepts:None - (5:0,5) - Tokens:3
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Bang;[!];
            HtmlTokenType.DoubleHyphen;[--];
        Markup span - Gen<Markup> - [ ] - SpanEditHandler;Accepts:WhiteSpace - (9:0,9) - Tokens:1
            HtmlTokenType.WhiteSpace;[ ];
        Expression block - Gen<Expr> - 4 - (10:0,10)
            Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (10:0,10) - Tokens:1
                CSharpTokenType.Transition;[@];
            Code span - Gen<Expr> - [foo] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (11:0,11) - Tokens:1
                CSharpTokenType.Identifier;[foo];
        Markup span - Gen<Markup> - [ ] - SpanEditHandler;Accepts:WhiteSpace - (14:0,14) - Tokens:1
            HtmlTokenType.WhiteSpace;[ ];
        Markup span - Gen<Markup> - [-->] - SpanEditHandler;Accepts:None - (15:0,15) - Tokens:2
            HtmlTokenType.DoubleHyphen;[--];
            HtmlTokenType.CloseAngle;[>];
    Tag block - Gen<None> - 6 - (18:0,18)
        Markup span - Gen<Markup> - [</foo>] - SpanEditHandler;Accepts:Any - (18:0,18) - Tokens:4
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.ForwardSlash;[/];
            HtmlTokenType.Text;[foo];
            HtmlTokenType.CloseAngle;[>];
