Markup block - Gen<None> - 16 - (0:0,0)
    Tag block - Gen<None> - 6 - (0:0,0)
        Transition span - Gen<None> - [<text>] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:3
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.Text;[text];
            HtmlTokenType.CloseAngle;[>];
    Markup span - Gen<Markup> - [Foo] - SpanEditHandler;Accepts:None - (6:0,6) - Tokens:1
        HtmlTokenType.Text;[Foo];
    Tag block - Gen<None> - 7 - (9:0,9)
        Transition span - Gen<None> - [</text>] - SpanEditHandler;Accepts:None - (9:0,9) - Tokens:4
            HtmlTokenType.OpenAngle;[<];
            HtmlTokenType.ForwardSlash;[/];
            HtmlTokenType.Text;[text];
            HtmlTokenType.CloseAngle;[>];
