Markup block - Gen<None> - 32 - (0:0,0)
    Tag block - Gen<TagHelper> - 32 - (0:0,0) - p - ptaghelper
        StartTagAndEndTag - <p> ... </p>
        Markup span - Gen<Markup> - [Hello World ] - SpanEditHandler;Accepts:Any - (3:0,3) - Tokens:4
            HtmlTokenType.Text;[Hello];
            HtmlTokenType.WhiteSpace;[ ];
            HtmlTokenType.Text;[World];
            HtmlTokenType.WhiteSpace;[ ];
        Expression block - Gen<Expr> - 13 - (15:0,15)
            Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (15:0,15) - Tokens:1
                CSharpTokenType.Transition;[@];
            Code span - Gen<Expr> - [DateTime.Now] - ImplicitExpressionEditHandler;Accepts:NonWhiteSpace;ImplicitExpression[RTD];K14 - (16:0,16) - Tokens:3
                CSharpTokenType.Identifier;[DateTime];
                CSharpTokenType.Dot;[.];
                CSharpTokenType.Identifier;[Now];
