---
key: barr-tex
short_name: Barr TeX License
name: Barr TeX License
category: Permissive
owner: Michael Barr
homepage_url: https://fedoraproject.org/wiki/Licensing/Barr
spdx_license_key: Barr
ignorable_emails:
    - barr@barrs.org
---

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.