Adobe Flash Professional CS6 Adobe Flash Professional CS6 Classroom In A Book | Page 370

10 Hold down the Alt/Option key and drag the right edge of the free transform
handle to expand the rectangle to cover the entire Stage.
Flash creates a new keyframe in the last frame, where the rectangle becomes
wider. The motion tween creates a smooth animation of the rectangle growing
wider and covering the Stage.
11 To see the effects of the Mask layer on its Masked layer, lock both layers. Scrub
the red playhead back and forth along the Timeline to see how the motion
tween uncovers the content in the bottom layer.
12 Insert a new layer and rename it actionscript.
13 Insert a keyframe at the last frame of the actionscript layer and open the
Actions panel.
14 Enter stop(); in the first line of the Script pane of the Actions panel.
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