Chain(List(Chain(List(Text(Here z(1) is defined as follows:), Text(
), HtmlTag(<br>), Text(
), Text(  ), HtmlTag(<img src='http://example.com/fig1.png'>), Text(
), HtmlTag(<br>), Text(
), Text(plus z(1) times), Text(
), HtmlTag(<br>), Text(
), Text(  ), HtmlTag(<img src='http://example.com/fig2.png'>), Text(
), HtmlTag(<br>), Text(
), Text(equals QL of something
)))))
Done.