Sony KP-51HW40 Operating Instructions Manual page 65

Using the Menus
8 Move the joystick left or right to select the exteMer to be viewed, and
press @.
"-" appears beside the selected extender, indicating that the programs
that match the extender can be viewed.
If you press @ again, ffl is displayed to show that the programs that
match the extender will be blocked again.
®
9 Repeat step 8 for other extenders.
All programs that match the ratings you select and higher, except for the
extenders that were canceled, will be blocked.
'1 0 Press MENU to exit the menu screen.
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