Authors, Copyright, and Acknowledgements

(for compatibility) the amount returned by the 16‐bit version of DosQuery‐ PathInfo(). Otherwise OS/2 1.3 and 2.0 would report different EA sizes when DIRing a file. However, the structure layout returned by the 32‐bit DosQueryPathInfo() is a bit different, it uses extra padding bytes and link pointers (it’s a linked list) to have all fields on 4‐byte boundaries for portability to future RISC OS/2 versions. There‐ fore the value reported by zip (which uses this 32‐bit‐mode size) dif‐ fers from that reported by DIR. zip stores the 32‐bit format for porta‐ bility, even the 16‐bit MS‐C‐compiled version running on OS/2 1.3, so even this one shows the 32‐bit‐mode size. AUTHORS Copyright (C) 1997‐2008 Info‐ZIP. Currently distributed under the Info‐ZIP license. Copyright (C) 1990‐1997 Mark Adler, Richard B. Wales, Jean‐loup Gailly, Onno van der Linden, Kai Uwe Rommel, Igor Mandrichenko, John Bush and Paul Kienitz. Original copyright: Permission is granted to any individual or institution to use, copy, or redistribute this software so long as all of the original files are in‐ cluded, that it is not sold for profit, and that this copyright notice is retained. LIKE ANYTHING ELSE THAT’S FREE, ZIP AND ITS ASSOCIATED UTILITIES ARE PROVIDED AS IS AND COME WITH NO WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED. IN NO EVENT WILL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DAMAGES RESULTING FROM THE USE OF THIS SOFTWARE. Please send bug reports and comments using the web page at: www.info‐ zip.org. For bug reports, please include the version of zip (see zip -h), the make options used to compile it (see zip -v), the machine and operating system in use, and as much additional information as pos‐ sible. ACKNOWLEDGEMENTS Thanks to R. P. Byrne for his Shrink.Pas program, which inspired this project, and from which the shrink algorithm was stolen; to Phil Katz for placing in the public domain the zip file format, compression for‐ mat, and .ZIP filename extension, and for accepting minor changes to the file format; to Steve Burg for clarifications on the deflate format; to Haruhiko Okumura and Leonid Broukhis for providing some useful ideas for the compression algorithm; to Keith Petersen, Rich Wales, Hunter Goatley and Mark Adler for providing a mailing list and ftp site for the Info‐ ZIP group to use; and most importantly, to the Info‐ZIP group itself (listed in the file infozip.who) without whose tireless testing and bug‐ fixing efforts a portable zip would not have been possible. Finally we should thank (blame) the first Info‐ZIP moderator, David Kirschbaum, for getting us into this mess in the first place. The manual page was rewritten for Unix by R. P. C. Rodgers and updated by E. Gordon for zip 3.0. Info‐ZIP 16 June 2008 (v3.0) ZIP(1)

This section includes author and copyright information for the zip program, attributing it to Info-ZIP and earlier contributors like Mark Adler, Richard B. Wales, and Jean-loup Gailly. It contains the original copyright notice granting permission to use, copy, or redistribute the software, with the condition that it's not sold for profit and the copyright notice is retained. It includes a disclaimer of warranty, stating that the software is provided as-is and the copyright holders are not liable for damages. It also gives instructions for sending bug reports via the Info-ZIP website, specifying necessary information to include. Finally, the section acknowledges various individuals and groups who contributed to the project, including those who inspired the compression algorithms, clarified file formats, provided support, and tirelessly tested and fixed bugs. The manual page was rewritten for Unix by R. P. C. Rodgers and updated by E. Gordon for zip 3.0.