1. SSion> To extract fileS from an archive created with PKWare' SPKZIP archiver. 2. SSion> A program to liSt, teSt, or extract fileS from a ZIP archive, commonly found on MS-DOSSyStemS. zip, createS ZIP archiveS both programS are compatible with archiveS created by PKWARE' SPKZIP and PKUNZIP for MS-DOS. (1995-03-06)