Markup Comments and Proofing is a feature which allows users to collaborate on a Resource being created or updated as part of an approvals process. One of the most important actions within this feature is the ability to Add a New Version / Revision; allowing for changes to be requested, actioned offline and the updated file added for further feedback or approval.
Users are now able to compare Versions / Revisions, allowing them to easily compare the differences between two versions of a file. Having both files on the same screen makes it easy to compare Version 1 to Version 2 and see if the updates requested in the Comments of Version 1 have been addressed. Users can also resolve and respond to comments on this page, enabling them to both acknowledge the changes have been completed or provide additional feedback.
You can read more about the new Compare Version / Revision feature here.