Modify Exercise feedback

Hi,

The Modify Exercise activity is ideal for what I'm working on, but it would be useful if it could do a bit more.

The feedback button shows the model answer, but doesn't identify the differences between this and the learner's answer. For long texts, spotting the difference could be challenging.

Is there a way differences could be highlighted? And a feedback option to explicitly tell the learner whether they've got it right or not?

Thanks for your help in advance.

Jan