Apple TV/FM Radio System - Manual (Page 114)

3 Click the track you want to use.
CC 1 provides closed captions for most broadcasts that have
this feature. CC 2 sometimes provides captions in a second
language. Text 1 may provide schedules of programs
broadcast on a channel. Text 1 or Text 2 may provide
specialized text for TV.
The track you select applies to all channels, although some
channels may not provide the feature.
Changing the video window size
There are several ways to change the size of the video
window. You can choose a command from the Windows
menu, use a keyboard shortcut for one of the three most
common sizes, click the zoom box, drag the size box, or use
the remote control. (All but the last way are explained in this
section. The remote control is explained in Chapter 9.)
Choosing menu commands
You can choose different video window sizes from the
Windows menu:
m Smallest Size uses about 1/16 of the screen.
m Normal Size uses about 1/4 of the screen.
m Largest Size uses as much of the screen as it can.
On monitors that are 640 by 480 pixels or smaller, Largest
Size hides both the menu bar and the screen controls.
Moving the mouse makes the menu bar visible.
107 Other Features