> You do not seem to understand how copyright works. When published, a
quoted text
> work is subject to a set of restrictions, laid down by copyright law.
> A license grants rights (under conditions or restrictions) to the
> receiver of a work.  No license means no extra rights, which means the
> default defined by copyright law applies. If you want to publish a
> work as public domain, you must include a license saying so. 
>

Yes, I know. Granting a work into the public domain is not a license.
And public domain varies between different countries. I believe there
is no public domain in Japan.