how would I do something like “disable-output-escaping yes” in XQuery?

• http://stackoverflow.com/questions/38677984/how-would-i-do-something-like-disable-output-escaping-yes-in-xquery

I am transforming an bank account statement from HTML to a text file (meant to be read by humans) using XQuery. And I want to use “<” and “>” in the output. But XQuery serialisation does the usual XML / HTML escaping. I wonder, how I can get around that unwanted rewriting.