MarkupBlock - [0..6)::6 - [<></> ]
    MarkupTagBlock - [0..2)::2 - [<>]
        MarkupTextLiteral - [0..2)::2 - [<>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            CloseAngle;[>];
    MarkupTagBlock - [2..5)::3 - [</>]
        MarkupTextLiteral - [2..5)::3 - [</>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            ForwardSlash;[/];
            CloseAngle;[>];
    MarkupTextLiteral - [5..6)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:None
        Whitespace;[ ];
