?? ????? ???? ?? ?? ??? ???? ??? ???? ????. ?? ??? ?? ??? ?????? ??? ??? ?? ??????? ?? ??? ???? `?????` ??? ??? ?? ??? ????. The copyright from the contributed doc belongs to every contributor, and each contributor owns the copyright with the section they add. ??? ????? ??? ? ?? ?? ???? ?? ?? ????, ??? ???? ????? ?? ??? ?? ?????? ??? ?? ??? ?? ?