Here is an example of what can be done:  surveys.tuni.fi/lime/412144?newtest=Y&lang=en

However, I did that totally manually: Look the source code of page and added to the question using editor in the code mode. Is there a way to do that with JS so that I could give normal user some trivial instruction like "start subselections with underscore and add this code to the question: . . ."?

Hi,
seems to be a similar question
[url] forums.limesurvey.org/forum/can-i-do-thi...-hierarchical-topics [/url]

I will show it in the other thread.

Joffm