MarkupBlock - [0..17)::17 - [<aLFhref='Foo' />]
    MarkupTagBlock - [0..17)::17 - [<aLFhref='Foo' />]
        MarkupTextLiteral - [0..2)::2 - [<a] - Gen<Markup> - SpanEditHandler;Accepts:Any
            OpenAngle;[<];
            Text;[a];
        MarkupAttributeBlock - [2..14)::12 - [LFhref='Foo']
            MarkupTextLiteral - [2..4)::2 - [LF] - Gen<Markup> - SpanEditHandler;Accepts:Any
                NewLine;[LF];
            MarkupTextLiteral - [4..8)::4 - [href] - Gen<Markup> - SpanEditHandler;Accepts:Any
                Text;[href];
            Equals;[=];
            MarkupTextLiteral - [9..10)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                SingleQuote;['];
            GenericBlock - [10..13)::3
                MarkupLiteralAttributeValue - [10..13)::3 - [Foo]
                    MarkupTextLiteral - [10..13)::3 - [Foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
                        Text;[Foo];
            MarkupTextLiteral - [13..14)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
                SingleQuote;['];
        MarkupTextLiteral - [14..17)::3 - [ />] - Gen<Markup> - SpanEditHandler;Accepts:None
            Whitespace;[ ];
            ForwardSlash;[/];
            CloseAngle;[>];
