<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=391743) </details> <!--IssueSummary end--> ### Proposal Currently when doing a code review, we can mark an entire file as "Viewed" which hides it from the code review. If the file changes from a future commit, it is automatically "un-viewed". This feature is great, but not as useful for very large files. It would be great if we could select multiple lines of the file and mark those lines as "Viewed".