Apple Final Cut Pro 7 - Manual (Page 737)

Trim Buttons
These controls let you trim clips as well as turn trimming on and off.
Dynamic Trimming
checkbox
Trim Forward buttons Trim Backward buttons
• Trim Forward and Trim Backward: Click these buttons to add or subtract frames from
the duration between the In and Out points.
You can set the –5 and +5 buttons to trim a different number of frames by changing
the Multi-Frame Trim Size setting in the Editing tab of the User Preferences window.
The number of frames to trim can be set from 1 to 99. For more information, see
“Choosing Settings and Preferences.”
• Dynamic Trimming: Select this checkbox to turn dynamic trimming on and off, without
having to go to the User Preferences window. For more information, see “Dynamic
Trimming.”
737 Chapter 46 Trimming Clips Using the Trim Edit Window