http://reviews.reviewboard.org/ What version are you running? 1.0.7 What's the URL of the page this enhancement relates to, if any? View Diff http://host/r/99/diff/#index_header Describe the enhancement and the motivation for it. Easily getting lost when doing long reviews. Please provide any additional information below. When performing a large review (lots of files) we hardly go in the same order it is presented and you often have to stop in the middle to do other things. Have a way to somehow mark files. (Would be used to tag which ones needs to be looked at to finish the review). As in Gmail "Starred", you could even rotate between 3 or 4 multiple-color marks (green check, red exclamation, yellow warning sign). Those marks would be actionable from the list of files at tiny icons (top and bottom index) and directly from the top (and bottom?) of the diff also (as bigger icons). At the same time it would be nice to be able to collapse the whole "diff" section of a file. The gotcha here is that these states would need to be retained and attached to the current user (not visible to others). Alternatively, just have a way to collapse a file without that state being stored in the database. This might be just enough as a starter for this feature. The idea is that you would use the collapse as a "flag" and would have to leave your window open over many days - over the course of that long review.