

                        Otter 2.2

                Automated Deduction System
         Copyright (C) Argonne National Laboratory

   Argonne does not guarantee this software in any manner and is
   not responsible for any damages that may result from its use.
   Furthermore, Argonne does not provide any formal support for this
   software.  This is an experimental program.  This software
   or any part of it may be freely copied and redistributed,
   provided that this paragraph is included in each source file.


This directory contains the source code, test problems, and
documentation for the automated deduction program Otter, Release 2.2.
(Also included in the UNIX version is a secondary program called
Formed, Release 0.9.  See source/README.FOR.)

The subdirectories are

    source    -- all of the C code.
    test      -- the set of test problems and possibly an executable file.
    document  -- users guide.
    misc      -- various makefiles and porting information, and
                 some general information on automated deduction.

This official release is for 3 kinds of computer: UNIX systems,
IBM-type PCs, and Macintoshes.

    UNIX system -- I assume you received this directory by anonymous FTP
    (info.mcs.anl.gov, directory pub/Otter/Otter-2.2) or on a tar tape.
    You will have to make (compile) Otter yourself. See the file
    source/README.UNX.

    IBM-type PC -- I assume you received this directory on a 5.25 inch
    high density floppy.  Executable files OTTER.EXE and OTTER_32.EXE
    (for 386 and 486 PCs) are in the directory named
    test.  If they are not there or if you wish to (change and)
    recompile the source, see source/README.PC.

    Macintosh -- I assume you received this directory on two 3.5 inch
    double-sided floppies (or possibly one floppy if the source
    code is not included).  An application named Otter is in the
    directory named test.  If it is not there or if you wish to
    (change and) recompile the source, see source/README.MAC.

The 3 versions contain essentially the same material.  In particular,
the source code files for the 3 are identical (conditional compilation
is used),  so if you have the Macintosh version and you are able to
get the files transferred to your UNIX system, you should have
little trouble making Otter.  See the directory named misc.

If your computer is none of the above and you have a good C compiler,
you might not have much difficulty.  Look for #ifdef's in the source
to find non-portable parts of the code.

I'm afraid I don't have the resources to provide much technical
support, but please let me know if you find a bug.

I am trying to keep a record of active Otter users.  If you become
an Otter user, please let me know and send a brief description
of your applications.  I would also enjoy seeing any reports or
papers mentioning work with Otter.

If you wish to be on an e-mail list to receive updates, bug fixes, 
information on new releases, etc., or for information on obtaining
the current version of Otter, send me a message.

July 1991

W. McCune
MCS-221
Argonne National Laboratory
Argonne, IL  60439-4844
U.S.A.

otter@mcs.anl.gov
