MACROMEDIA FLASH 8-USING FLASH Use Manual page 255

To begin the motion tween rapidly and decelerate the tween toward the end of the
animation, drag the slider down or enter a positive value between 1 and 100.
By default, the rate of change between tweened frames is constant. Easing creates a more
natural appearance of acceleration or deceleration by gradually adjusting the rate of
change.
If you want to use the Custom Ease In/Ease Out dialog box to produce a more
complex change in speed within the tween's frame span, see
in/ease out to motion tweens (Flash Professional only)" on page
8. To rotate the selected item while tweening, select an option from the Rotate menu:
Select None (the default setting) to prevent rotation.
Select Auto to rotate the object once in the direction requiring the least motion.
Select Clockwise (CW) or Counterclockwise (CCW) to rotate the object as indicated,
and then enter a number to specify the number of rotations.
The rotation in step 8 is in addition to any rotation you applied to the ending
frame in step 4.
9.
If you're using a motion path, select Orient to Path to orient the baseline of the tweened
element to the motion path. (See
10. Select the Sync option in the Property inspector to synchronize the animation of graphic
symbol instances with the main Timeline.
Modify > Timeline > Synchronize Symbols and the Sync option both recalculate the
number of frames in a tween to match the number of frames allotted to it in the
Timeline.
11.
If you're using a motion path, select Snap to attach the tweened element to the motion path
by its registration point.
To create a motion tween using the Create Motion Tween command:
1. Select an empty keyframe and draw an object on the Stage, or drag an instance of a symbol
from the Library panel.
To create a tween, you must have only one item on the layer.
2. Select Insert > Timeline > Create Motion Tween.
If you drew an object in step 1, Flash automatically converts the object to a symbol and
assigns it the name tween1.
"Tweening motion along a path" on page
Tweening instances, groups, and type
"Applying custom ease
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