Sony WEGA KDE-37XS955 Operating Instructions Manual page 101

Allows you to assign labels (such as station call letters) to
channel numbers.
Press to scroll through the channel numbers. Then
press @ to select the channel number that you want to
assim_ a label.
Press ............ to highlight and press (_).
Press to scroll through the label characters (A-Z, 0-9,
etc.). Then press @ to select the highlighted character.
Repeat to add up to 5 characters to the label.
To assign labels to more channels, repeat steps 1-3.
Press to return to the Channel menu, or press to
exit the Menus.