PAR file | Article about PAR file by The Free Dictionary
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PAR file(PARity file) A file that contains the computed parity bits from a source file. PAR files are generated from Usenet archives that have been broken into multiple files because of file size limitations on news servers. A PAR file would allow the complete archive to be reconstructed if one of the files became corrupt. PAR files can also be used to verify the integrity of the complete archive. See Usenet.