Apple Final Cut Pro 7 - Manual (Page 26)

26 Chapter 1 A First Look at Final Cut Pro
Position the pointer over the end of the clip and drag to shorten or lengthen the clip. m
You can trim either end of a clip this way.
Click the Razor Blade tool in the Tool palette. Position the pointer over the clip, then
m
click to split the clip. Click the Selection tool. Select part of the clip and press Delete.
Razor Blade tool
Selection tool
Cancel your actions:
Choose Edit > Undo to cancel your last change. Press the Undo command’s keyboard
m
shortcut, Command-Z, to undo the change before that. You can undo up to 99 changes.