Markup block - Gen<None> - 13 - (0:0,0)
    Tag block - Gen<None> - 3 - (0:0,0)
        Markup span - Gen<Markup> - [<p>] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:3
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Text;[p];
            HtmlTokenType.CloseAngle;[>];
    Markup span - Gen<Markup> - [foo#] - SpanEditHandler;Accepts:Any - (3:0,3) - Tokens:1
        HtmlTokenType.Text;[foo#];
    Expression block - Gen<Expr> - 2 - (7:0,7)
        Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (7:0,7) - Tokens:1
            CSharpTokenType.Transition;[@];
        Code span - Gen<Expr> - [i] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (8:0,8) - Tokens:1
            CSharpTokenType.Identifier;[i];
    Tag block - Gen<None> - 4 - (9:0,9)
        Markup span - Gen<Markup> - [</p>] - SpanEditHandler;Accepts:None - (9:0,9) - Tokens:4
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.ForwardSlash;[/];
            HtmlTokenType.Text;[p];
            HtmlTokenType.CloseAngle;[>];
