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| ffeil sy'n echdynnu ei hun (An executable program file that contains one or more compressed text or data files. When a user runs the program, it uncompresses the compressed files and stores them on the user's hard drive) | |||
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| ffeil sy'n echdynnu ei hun (An executable program file that contains one or more compressed text or data files. When a user runs the program, it uncompresses the compressed files and stores them on the user's hard drive) | |||
