Apple Final Cut Express HD - Manual (Page 739)

Chapter 50 Adjusting Parameters for Keyframed Effects 739
IX
To resize one side of a Bezier curve independently of the other:
m Hold down the Shift key as you drag a Bezier handle. Release the Shift key to lock the
relative length of the two handles back together using the new unequal lengths you set.
To change the angle between one side of a Bezier curve and the other:
m Hold down the Command key as you drag a Bezier handle. Release the Command key
to lock the new relative angle of the two handles back together.
To change the lengths and the angle of the selected Bezier handle independently of
one another:
m Hold down the Command and Shift keys as you drag a Bezier handle.
Press Shift, then drag to
resize one side differently
than another.
Press Command, then drag to
resize one side differently than
another.
Press Command and Shift, then
drag to resize and change the
angle of one side only.