Review answers

1. I and O.
2. ⌥X (Option-X).
3. Choose Favorites from the Clip Filtering menu in the Browser.
4. Red.
5. A marker.
6. N.
7. The search field at the top right of the Browser, or the Filter window.
8. Create a new Smart Collection in the Filter window.
9. No.
10. Yes, as many as you wish, though overlapping Favorite regions become a single region.