OpenBSD is under CVS or DCVS?

Sepahrad Salour <[email protected]> Sun, 16 Feb 2014 19:51:52 +0330

Newsgroups	gmane.os.openbsd.advocacy
Message-ID	<[email protected]>

Hi,

I want to know that OpenBSD uses CVS or DCVS? Because CVS is under GNU 
General Public License but DCVS is under GPL and BSD License.

-- 
Regards,
Sepahrad Salour