On Thu, 2004-02-26 at 01:48, Alfred M. Szmidt wrote:
Only if one considers a work that lacks a copyright header something that is in the public domain, which I belive is not the case.
Well, certainly work that is PD would not have a copyright header, because it wouldn't be in the public domain if it was copyrighted. However, a copyrighted work doesn't have to have a copyright header. So, you definitely cannot say a work without a copyright header is public domain.
(There is some dispute over whether or not it is possible to renounce your copyright and put a work into the public domain; it varies by your region. Works whose copyright have expired are definitely PD, but that is unlikely to cover any computer code ;)
Cheers,
Alex.