How do I invert a selection in iMovie 11/ delete unused portions of clips

Question

I want to delete unused portions of clips:
In iMovie 11 an orange bar appears at the bottom of a clip to show that that portion of the clip is being used in a project.
If I click on the orange bar, the yellow clip selection extends to that portion of the clip.
I want to invert the selection so that the portion of the clip that is not used is selected so that I can reject it and later delete unused portions.
If there is another way to do that then great...
Thanks
David

Answer 1

I think it might be easier to first finish the project with all that extra video clip lying around and then use the Space Saver to tidy things up. It's under the File Menu and is always done at the very end when you have already Finalized your project.
From the iMovie Help:
In the Event Library, select one or more Events.
To select more than one Event at a time, press Command as you click Event names.
Choose File > Space Saver.
The File menu appears in a light gray bar across the top of your computer screen.
Select any of the following:
To reject all of the video that hasn’t been added to an iMovie project, select “Not added to any project.”
To reject all of the video that you haven’t marked as “favorite,” select “Not marked as Favorite.”
To reject all of the video that you haven’t marked with a keyword, select “Not marked with a keyword.”
Click “Reject and Review.”The view changes to show only the rejected clips in the selected Events.
*Note: This is not the full listing of Help for the Space Saver function but you get the idea. It seems as though Apple thinks it's a much better use of your time to put off the house keeping tasks like cleaning up unused video until after you have Finalized the project.