Understanding code changes is made easier with an improved diff view that reduces white space, allowing reviewers to focus on the actual code updates. The introduction of a "Diff settings" button enables users to automatically minimize white space in their view, enhancing the review process without losing the ability to comment on white space changes. These comments are preserved across both views, ensuring seamless communication. While the capability to reduce white space in diff views by adding "?w=1" to the URL has been available since 2011, the new button enhances this feature to better integrate into existing workflows.