Lexus 2013 GS 350 Owner's Manual page 407

DVD video discs
The DVD player conforms to NTSC/PAL color TV formats. DVD
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video discs conforming to another format such as SECAM cannot
be used.
Region code: Some DVD video discs have a region code indicating
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the region in which you can use the DVD video disc. If the DVD
video disc is not labeled as "ALL" or "1", you cannot use it on this DVD
player. If you attempt to play an inappropriate DVD video disc on this
player, "Region Code Error" appears on the screen. Even if the DVD
video disc does not have a region code, you may not be able to use it.
Symbols shown on DVD video discs
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Symbol
NTSC/PAL
GS350_U (OM30C34U)
5-3. Using the audio system
Meaning
Indicates NTSC/PAL format
Indicates the number of audio tracks
Indicates the number of language subtitles
Indicates the number of angles
Indicates the screen display ratios available
Wide screen: 16:9
Standard: 4:3
Indicates the disc' s region code
ALL: in all countries
Number: region code
I n f o r ma t i o n P r o v i d e d b y :
5