Hello Gunther,Thank you very much for reminding me of your response.
I’ve pasted my reply from May 3 below, in case it was missed. From my perspective, that should address the issue - please let me know if you see it differently.
At the time I was busy with many things, and forgot about it. I use the O'Reilly XQuery book when programming XQuery, which does not yet include the $options parameter. This shows me that I should use the BaseX documentation instead.
Using the right options, as you suggest, indeed fixes the 'problem'. Thanks again!
Best regards, Nico