Have started work on this, based on Pierre's code from last year, on this branch: https://github.com/timhunt/Moodle-Question-Engine-2/tree/multianswer
thanks for the copyright notices
For some reason, the feedback tooltip does not appear above the disabled select menus. That is very annoying, and we need to find a work-around, but that will have to wait until later.
Done, I hope!