MarkupBlock - [0..28)::28 - [<foo><text><bar></bar></foo>]
    MarkupTagBlock - [0..5)::5 - [<foo>]
        MarkupTextLiteral - [0..5)::5 - [<foo>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            Text;[foo];
            CloseAngle;[>];
    MarkupTagBlock - [5..11)::6 - [<text>]
        MarkupTextLiteral - [5..11)::6 - [<text>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            Text;[text];
            CloseAngle;[>];
    MarkupTagBlock - [11..16)::5 - [<bar>]
        MarkupTextLiteral - [11..16)::5 - [<bar>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            Text;[bar];
            CloseAngle;[>];
    MarkupTagBlock - [16..22)::6 - [</bar>]
        MarkupTextLiteral - [16..22)::6 - [</bar>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            ForwardSlash;[/];
            Text;[bar];
            CloseAngle;[>];
    MarkupTagBlock - [22..28)::6 - [</foo>]
        MarkupTextLiteral - [22..28)::6 - [</foo>] - Gen<Markup> - SpanEditHandler;Accepts:None
            OpenAngle;[<];
            ForwardSlash;[/];
            Text;[foo];
            CloseAngle;[>];
