Apple Motion 2 Tutorials - Manual (Page 101)

Tutorial 2 Basic Motion Behaviors 101
2 In the Timeline, click the right end of the Grow/Shrink behavior and trim it to
approximately frame 100.
3 If the project is not playing back, click the Play button (or press the Space bar).
Notice that during playback, when the playhead reaches the end of the behavior’s bar,
the circleText object jumps back to its original size.
4 Choose Edit > Undo Trim (or press Command+Z) to undo the change, or drag the end
of the bar back to frame 150.
5 Hide the Timing pane (click the Timing icon or press Command+7).
So, what do you do if you want to end the effect of the behavior prior to the end of the
object to which it’s applied? You use the End Offset parameter in the Inspector.
6 Show the Behaviors tab of the Inspector.
Notice that the Grow/Shrink behavior controls contain a parameter called End Offset.
This parameter allows you to specify the number of frames that the effect of the
behavior is offset from the end of the object to which it’s applied. If you set an End
Offset value of 50 here, for example, the “shrinking” stops at frame 100, or 50 frames
prior to the end of the object.
Many behaviors contain Start Offset and End Offset parameters. The Start Offset
parameter works in the same way as the End Offset parameter, but affects where the
behavior begins.
Note: There is no visual indication in the Timeline for the End Offset value.