Copyright (C) 1990-1992 Mark Adler, Richard B. Wales, Jean-loup Gailly,
Kai Uwe Rommel and Igor Mandrichenko.
Permission is granted to any individual or institution to use, copy, or
redistribute this software so long as all of the original files are included
unmodified, that it is not sold for profit, and that this copyright notice
is retained.


Zip 1.9 is a compression and file packaging utility.  It is compatible
with PKZIP 1.93a (Phil Katz ZIP) for MSDOS systems.  There is a
companion to zip called unzip (of course) which you should be able to
find the same place you got zip. This package (zip19p1x.zip) contains
only the MSDOS executables and documentation for zip 1.9 patch level 1.
See the file 'Where' for access to the source, and details on ftp sites
and mail servers.

This version of zip has been ported to a wide array of Unix and other
mainframes, minis, and micros including VMS, OS/2, Minix, MSDOS,
Windows NT, Atari, and Macintosh (the latter two have not been tested
recently).  Although highly compatible with PKware's PKZIP and PKUNZIP
utilities of MSDOS fame, our primary objective has been one of
portability and other-than-MSDOS functionality.  Features not found in
the PKWare version include creation of zip files in a pipe or on a
device, VMS and OS/2 extended file attributes, conversion from Unix to
MSDOS text file format; and, of course, the ability to run on most of
your favorite operating systems. And it's free.

Contents:

Readme		This file
Where           where Zip/UnZip and encryption/decryption support can be found
zip.doc         Documentation for zip 1.9, zipnote and zipsplit.
zip.exe		MSDOS executable for zip 1.9
zipnote.exe	MSDOS exe for zipnote (edit zip file comments)
zipsplit.exe	MSDOS exe for zipsplit (split a zip file into several files)
zipinfo.doc	Documentation for zipinfo
zipinfo.exe	MSDOS exe for zipinfo (list detailed information about a ZIP
                archive file)

For command help on any of the zip* utilities, simply enter the name
with no arguments.

The file zip.exe provided here does not support encryption because
of the US export regulations. You can build one yourself from source.
See the file 'Where' for access to the source of zip and its encryption
code.

All bug reports should go to zip-bugs@cs.ucla.edu, and suggestions for
new features can be sent to info-zip@cs.ucla.edu (although we don't
promise to use all suggestions).

If you'd like to keep up to date with our zip (and companion unzip utility)
development, join the ranks of BETA testers, add your own thoughts and
contributions, etc., send your request to Info-ZIP-Request@cs.ucla.edu and 
you will be added to the Info-ZIP newsletter mailing list.


IMPORTANT NOTES:

- pkzip 1.93a is only an alpha version (see historical notes below). If
  you wish to create zip files compatible with the official version of
  pkzip (1.10), you must use zip 1.0. zip 1.9 cannot create files
  with the old compression method (implosion).

- zip 1.9 is is compatible with pkzip 1.93a, except when two features
  are used: encryption or zip file created in a pipe or on a non
  seekable device. pkzip versions of 2.0 will support such files, and
  unzip 5.0 already supports them. (Thanks to Phil Katz for accepting
  our suggested minor changes to the zip file format.)

- Please read the file zip.doc, and in particular its list of known bugs
  at the end.

Historical notes:

At the time of release of zip 1.9, the official released version of
PKZIP is version 1.10. PKZIP 1.93a is only an alpha version, which was
released in October 1991. It was supposed to be replaced soon after
with an official release of pkzip 2.0.  However, Phil Katz has not yet
announced a release date at the time of writing (Aug 28th, 1992).

Beta versions of zip compatible with pkzip 1.93a have been available
since February 1992 to the info-zip group (see the file 'history').
The zip authors would have preferred to release zip 2.0 only after
pkzip 2.0(*), to ensure full compatibility in case of archive format
changes between pkzip 1.93a and 2.0. However we feel that we cannot
delay any further the release of zip 1.9, since all the major features
that we wanted to put in are now available and well tested by the
info-zip group.

(*) The version number for the new pkzip was planned to be 2.00, but may
    be increased to a number greater than 2.2 to prevent confusion with
    several bogus versions, which may destroy all the data on your hard
    disk if you run them.