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.
