Sony KP-51WS500 Mode D'emploi page 238

Using the Menus
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5
Move the joystick left, then down, to select "TV Rating" or "Program,"
and press .
6
The "TV Rating" setting menu appears.
7
Move the joystick up or down to select the rating to be blocked, and
press .
The indicator automatically appears beside the selected rating and all
"higher" ratings, indicating that the programs that match the ratings will
be blocked.
To unblock a rating, select it by moving the joystick up or down, then
press . The indicator
unblocked.
Some TV ratings have additional content ratings called "extenders." The
extenders are defined as follows: D (sexually suggestive Dialog), FV
(Fantasy Violence), L (Coarse Language), S (Sexual situations) and V
(Violence). By setting the extenders, you can define additional viewing
limits. All of the extenders included in the selected ratings will be
blocked. If you wish to allow any of them to be viewed, go to step 8.
changes into "-" and all "lower" ratings are