Apple Mac OS X Server v10.6 - Manual (Page 27)

Chapter 4 Configuring the Edit Stage 27
In the Edit stage, you can drag movies and watermarks onto the corresponding
elements in the timeline and in dialog boxes.
In the Edit stage, you can also:
Use the Remove (–) button or press Backspace to remove an optional item. Use the Â
Add (+) button to add an item. To delete all optional items, press Command-Delete.
Skim through video clips in the timeline to preview video content.
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Use the Preview button to preview the movie that will be generated by the Edit stage. В