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Upsource news feed displays recent events across the project that apply to you. They include discussion comments, invitations from other teammates to review their revisions, and code review status updates.
Displaying news feed
Clicking a review or a revision mentioned in a news feed entry will open it in a corresponding IDE window.
Select a comment by clicking on it. Now you can:
If you're the author of the comment, you can also:
Even with the news feed closed you can still receive notifications in the form of a floating balloon: