System information
2. 
Click the Parent  Motion button     on the parent track. The Track Motion window is displayed.
Parent track motion is applied to the parent track and all child 
tracks.
In the sample track list, parent track motion on track 1 will 
affect  tracks 1 through 6.
Parent track motion applied to track 4 will affect only tracks 4 
through  6.
3.  Choose a setting  from the Composite Mode  drop-down list to specify how your tracks will be 
composited over other  tracks.
4.  Perform the procedures described  earlier in this topic to crop or zoom the composited tracks, change 
their  position on screen, or add shadow or glow effects.
5.  If you want to create animated track  motion, use the keyframe controller at the bottom of the 
Track Motion  window to establish distinct zoom settings throughout the duration of  the track.
During playback, intermediate frames  are interpolated to create smooth motion. 
For more information, see "Keyframe Animation" on page 294.
Changing editing options
Use the toolbar at the top of the Track Motion window to  change your editing options:
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