Hi Ya,
The regions they are using are the exact same as DVD.............
You'll find a lot of british and australian DVD's are dual coded to work in both europe and australia this way they don't have to make different versios of the dvd for each region, this is because Australia and Europe having the same kinda laws and saves money for the developers and distributors.
Some DVD's will show this on the back, some will not.
Then You have america and south america and you'll find many american DVD's 1/4.
Sony Originally Created this regional system in the creation of DVD's 10 years ago or so.
It seems their using it for there UMD format as well.
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