Setting up a work area
When you work on a composition, you may want to preview or render only part of the composition. Do this by specifying a part of the composition time ruler as a work area. In the Timeline window, the work area appears in a lighter shade of gray. (See "Previewing animation" on page 168 or "Making (rendering) a movie" on page 684.)
Set the work area start and end points to the current time by pressing B (begin) or N (end), respectively.
To set up a work area:
In the time ruler, move the start and end work-area markers until they mark the start and end of the part of the composition you want to use as a work area.
To move the work area:
In the time ruler, drag the center of the work area bar left or right.
To expand the work area to the size of the composition:
Double-click the center of the work area bar.
