File format

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https://www.google.com/url?sa=t&source=web&rct=j&url=https://en.m.wikipedia.org/wiki/File_format&ved=2ahUKEwjBkK_BoOfpAhU6xTgGHfzvCGoQFjAOegQIEBAp&usg=AOvVaw0NIaUa80x2n2dy5EjV1qal

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