MarkupBlock - [0..4)::4 - [<br/]
    MarkupTagBlock - [0..4)::4 - [<br/]
        MarkupTextLiteral - [0..4)::4 - [<br/] - Gen<Markup> - SpanEditHandler;Accepts:Any
            OpenAngle;[<];
            Text;[br];
            ForwardSlash;[/];
