There is some question about whether the Gnu copyleft is enforcible,
but whether it is or not, it is generally obeyed. Its restrictions,
then are real in effect. One cannot use parts of gnu software in
your own product unless you jump through Stallman's hoops, whether
you want to or not.
-- Lee Daniel Crocker <email@example.com> <http://www.piclab.com/lcrocker.html> "All inventions or works of authorship original to me, herein and past, are placed irrevocably in the public domain, and may be used or modified for any purpose, without permission, attribution, or notification."--LDC