What version are you running? 2.0.4 What's the URL of the page this enhancement relates to, if any? /r/1111/diff/# Describe the enhancement and the motivation for it. I would like to be able to collapse individual diff chunks after reviewing. Some of our reviews are quite long, and I would like to be able to collapse chunks if they don't need further review. I would like this collapsed state to be maintained so that if I leave and return to the diff, my collapsed sections are still collapsed. Ideally, this would work like selecting a chunk of lines to reviews, and either selecting "collapse" or "don't need to see again", something like that. This would only be for a given reviewers private view, not something that is published to the reviewee. What operating system are you using? What browser? Fedora 20, Firefox 30.0 Please provide any additional information below.