Dear Coen,
Thanks for replying so quickly

I've only now started to actually transfer the questionnaire from LO Writer to LimeSurvey and don't really understand what I need to do to get "Expression Manager on sub-question-level".
I tried importing your lss file into my university's system, but that results in an error so I can't check what exactly you did. What I suspect, based on your comment & the xml file:
- use a 'multiple short text' question type
- add [maximum amount I want] of subquestions
- somehow add [tt]!is_empty(inputfields_
n)[/tt] per subquestion. But where can I set this? Based on
www.limesurvey.org/manual/Expression_Manager_HowTos
I think I should add it as [tt]array_filter[/tt], but I can't think of a way that makes the subquestion name (inputfields_n) generic (so that it changes n).
Thanks again for your help! (And sorry if my questions don't make a lot of sense)