PKZIP

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PKZIP A widely used shareware program used in both MS-DOS and in Windows (WinZip). PK stands for Philip Katz, who wrote the program. It is possible to compress one or more files into a single file with the extension .zip (known as a zip file). The file can be uncompressed using PKUNZIP. It is also possible to create self-extracting files (with the extension .exe) for distribution to people who may not have the program.