by Andrew C.
Hi Everyone,
Davo helpfully mentioned that I've been looking in the wrong place (I've been looking in the JavaScript) and suggested I look inside the PHP.
After a quick look around, I found the PHP in the www\mod\assign\feedback\editpdf\classes
under comments_quick_list.php
and found the solution by adding in the following PHP:
usort($records, function($a, $b) {return strcasecmp($a->rawtext, $b->rawtext);});
after line 45
to make the Quicklist display in alphabetical order instead of creation date.
Thanks for the information Davo. I'm a lot better with PHP than JavaScript
Andrew