Csh not public domain?

[Karl Kleinpaste]

I saw a note in net.sources recently claiming that csh is not in
the public domain.  This confuses me, as I was under the sincere
delusion that it was most definitely public domain.  I would think
that csh would be like any other Berkeley-originated software:
since it was created with public funds at a public university,
anything from a BSD release which is not derived from AT&T code
is public domain.  For example, I know that Berkeley Mail is a
public domain creation.

Can someone comment authoritatively on this for me?
-- 
"Real Men don't feed Usenet bugs!"
Karl Kleinpaste @ Bell Labs, Columbus	614/860-5107	{cbosgd,ihnp4}!cbrma!kk