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送交者: eng 于 2007-11-28, 13:58:42:

回答: It is partly due to freedom of information act, that government 由 steven 于 2007-11-28, 10:51:23:

does not mean you can use it freely. certain usages are still prohibited or need to be approved.

and... a watermark is not a digital signature.

it is possible they put a watermark there even it is not copyrighted, but i sort of agree that it is quite unlikely.




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