Anders Andersson <[email protected]> wrote:

> On Tue, May 19, 2020 at 9:10 AM Peter J. Philipp <[email protected]> wrote:
> >
> > Hi,
> >
> > Before I wrote this email I searched under marc.info and did a google 
> > search,
> > but I didn't get a definitive answer.  I found this under openbsd.org:
> >
> > https://www.openbsd.org/policy.html
> >
> > Whoever put that together I thank thee.
> >
> > In code, I see the (c) and the (C) used interchangibly, I'm wondering if 
> > it's
> > correct.  Here is an example of the ftp program in main.c:
> >
> > beta$ grep Copyright main.c
> >  * Copyright (C) 1997 and 1998 WIDE Project.
> >  * Copyright (c) 1985, 1989, 1993, 1994
> >
> > Let me know if either is correct.  I want to use it for guidance on my own
> > project too.  Where I use a lower case (c).
> 
> You might as well write "(<)" or "[C]". Neither is a copyright mark an
> any sense of the law, and using it does not do anything else than
> informing the reader that you claim the rights - you already have the
> rights even if you don't write anything. If you can only use ASCII,
> the "most proper" way would be to spell out "Copyright", but that is
> also just for information. As you can see, your example is using both
> forms.

That is correct.

By default, all rights reside with the author.  These statements are
used to give away rights to the public.  The word "Copyright" with the
name of the author and the date, is used to activate the class of law
which the giving-away statements are made under.

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