Notice that the keyword(s) you apply will also appear in the Keyword Shortcuts spaces ^1, ^2, and so on (those funny caret symbols represent the Control keyboard modifier key). You can now zip through clips, highlighting additional ones and simply hit the appropriate keyboard shortcut to apply the keyword, even if the clips are in a different event! Removing a keyword shortcut from the Keyword Editor window does not delete the keyword from tagged clips.

Keywords don't have to be applied to whole clips, they can be applied to only ranges of clips as well! Simply select a clip from your Event Browser, select a range (either by dragging across the portion you want or by using I and O to mark a range), and then add your keyword. The blue keyword line will only appear across the range of the clip you have selected, and only that portion of the clip will appear in the keyword collection. While this is great, don't let it confuse you! If you're reviewing a clip and if you find part of the clip seems to be missing, you are probably looking at a selection from the clip in a keyword collection, favorite, or Smart Collection (coming up in future recipes).

Lastly, to remove a keyword from a clip or clip range, simply select the clip or clips in the Event Library section, open the Keyword Editor window, click on the keyword you want to remove from the clip, and hit Delete. This does not delete the original clip; it only removes the selected clip(s) from the keyword collection! It's just like removing a song from an iTunes playlist or a photo from an iPhoto or Aperture album—the original files still exist! To permanently delete a clip, you would have to delete it from the original event heading.