RazorDocument - [0..10)::10 - [<p><strong]
    MarkupBlock - [0..10)::10
        MarkupTagHelperElement - [0..10)::10 - p[StartTagAndEndTag] - ptaghelper
            MarkupTagHelperStartTag - [0..3)::3 - [<p>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[p];
                CloseAngle;[>];
            MarkupTagHelperElement - [3..10)::7 - strong[StartTagAndEndTag] - strongtaghelper
                MarkupTagHelperStartTag - [3..10)::7 - [<strong] - Gen<Markup> - SpanEditHandler;Accepts:Any
                    OpenAngle;[<];
                    Text;[strong];
                    CloseAngle;[<Missing>];
