Markup block - Gen<None> - 12 - (0:0,0)
    Tag block - Gen<None> - 12 - (0:0,0)
        Markup span - Gen<Markup> - [<foo ] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:3
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Text;[foo];
            HtmlSymbolType.WhiteSpace;[ ];
        Expression block - Gen<Expr> - 4 - (5:0,5)
            Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (5:0,5) - Symbols:1
                CSharpSymbolType.Transition;[@];
            Code span - Gen<Expr> - [bar] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (6:0,6) - Symbols:1
                CSharpSymbolType.Identifier;[bar];
        Markup span - Gen<Markup> - [ />] - SpanEditHandler;Accepts:None - (9:0,9) - Symbols:3
            HtmlSymbolType.WhiteSpace;[ ];
            HtmlSymbolType.ForwardSlash;[/];
            HtmlSymbolType.CloseAngle;[>];
