Currently of diff pages, moved paragraphs are considered a deletion and a subsequent addition. This leads to the situation that people always need to read through all moved paragraphs to make sure, that nothing has changed apart from the position.
Find out, if for the php code it is possible to show changes in moved text chunks. Only existing display methods should be used. This means, that only the part that changed is highlighted.
Is the change also feasible concerning performance?
This is part of fulfilling wish #2 of the 2015 German-speaking community wishlist survey: T139603: Show text changes when moving text chunks (#2)