Sony SAT-T60 Welcome to DIRECTV & TiVo Instructions (primary manual) Instructions Manual page 83

Movies that were originally meant for release to theaters and
programs that are made for TV have different rating systems. You can use
to set limits for both systems. A password will be required to view programs
that violate the limits. For example, if you set the movie rating limit to PG-13, a
password is required to view R, NC-17, X or NR ("Not Rated") movies.
The Receiver treats movies rated "NR" ("Not Rated") like the most restrictive movie
rating, "X." It treats TV shows with no rating like the least restrictive television rating,
"TV-G."
Television ratings sometimes include a content rating. For example, the television
rating "TV-PG-V" includes the content rating "V" to indicate moderate violence. In
addition to setting TV Rating limits, you can limit programs based on their TV content
rating.
MPAA (Motion Picture Association of America) ratings, used for movies, are:
G: General Audiences. Most parents would
find this material suitable for all ages.
PG: Parental Guidance Suggested. Parents
may find portions of this material unsuitable
for younger children.
PG-13: Parents Strongly Cautioned. This
material contains portions that many parents
would find unsuitable for children under 13
years of age.
R: Restricted. This material is specifically
designed to be viewed by adults and therefore
may be unsuitable for children under 17.
, 2 3        
NC-17: Adult Content. This material contains
intense, disturbing, or graphically portrayed themes
or content that are not suitable for viewing by
children under 17.
X: (Not a current MPAA rating.) Explicit Sexual
Content. This material contains explicit sexual
content and is intended to be viewed by adults only.
NR: (Not Rated) This program has not been rated.
% ( )