Sony FD Trinitron WEGA KD-34XBR960 Operating Instructions Manual page 57

Using Additional
Program Guide
Options
Move the joystick * while in the program guide's channel list to
display the following options, which allow you to customize the
settings of the program on the currently tuned channel
Alternate Video Each program has a main video stream (the video that you
(when see when the charme] is ill"st tuned), and may have
available) alternate video streams. This option allows you to switch
among these alternate video streams.
Alternate Audio Each program has a main audio stream (the audio that you
(when hear when the channel is first tuned) and may have
available) alternate audio streams. This option allows you to switch
among these' alternate audio streams (e.g., for different
languages).