User Guide

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ADOBE AFTER EFFECTS 5.0
User Guide
To turn on or off the checkerboard background:
Choose Checkerboard Backgrounds from the Composition window menu.
Changing the region of interest
Use the Region of Interest button to create a rectangular preview of the composition
window. Reducing the region of interest requires less memory when previewing, thereby
improving interaction speed and increasing RAM preview duration. Changing the region
of interest does not affect file output.
To change the region of interest:
1 In the Composition window, do any of the following:
• To draw a region of interest, click the Region of Interest button ( ), and then drag the
marquee tool across the area of the composition window where you want images to
appear.
• To toggle between viewing the region of interest and the full composition area, click the
Region of Interest button again.
• To start over with the marquee tool, hold down Alt (Windows) or Option (Mac OS) and
click the Region of Interest button.
Using the Timeline window
Use the Timeline window to set up changes over time, animate layer properties numeri-
cally, and set In and Out points for a layer. The Timeline window controls are organized
in panels of related functions.
UG.book Page 115 Wednesday, February 21, 2001 12:05 PM