Markup block - Gen<None> - 4 - (0:0,0)
    Tag block - Gen<None> - 4 - (0:0,0)
        Markup span - Gen<Markup> - [<br/] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:3
            HtmlSymbolType.OpenAngle;[<];
            HtmlSymbolType.Text;[br];
            HtmlSymbolType.ForwardSlash;[/];
