This is a package of commutative diagram macros built on top of Xy-pic by Michael Barr (email: barr@barrs.org). Its use is unrestricted. It may be freely distributed, unchanged, for non-commercial or commercial use. If changed, it must be renamed. Inclusion in a commercial software package is also permitted, but I would appreciate receiving a free copy for my personal examination and use. There are no guarantees that this package is good for anything. I have tested it with LaTeX 2e, LaTeX 2.09 and Plain TeX. Although I know of no reason it will not work with AMSTeX, I have not tested it.

Copyright 1996-2006 Free Software Foundation, Inc. This file is free software; the Free Software Foundation gives unlimited permission to copy and/or distribute it, with or without modifications, as long as this notice is preserved.

Open Publication License v1.0, 8 June 1999 I. REQUIREMENTS ON BOTH UNMODIFIED AND MODIFIED VERSIONS The Open Publication works may be reproduced and distributed in whole or in part, in any medium physical or electronic, provided that the terms of this license are adhered to, and that this license or an incorporation of it by reference (with any options elected by the author(s) and/or publisher) is displayed in the reproduction. Proper form for an incorporation by reference is as follows: Copyright (c) by

LHa License Version 1.0 Original Source Code License Statement: Copyright (C) MCMLXXXIX Yooichi.Tagawa Original Authors License Statement (from man/lha.man, translated by Osamu Aoki ): Permission is given for redistribution, copy, and modification provided following conditions are met. 1. Do not remove copyright clause. 2. Distribution shall conform: a. The content of redistribution (i.e., source code, documentation, and reference guide for programmers) shall include original contents. If contents are modified, the document clearly indicating the fact of modification must be included. b. If LHa is redistributed with added values, you must put your best effort to include them (Translator comment: If read literally...

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