?? ??? ???? ?? ??? ??? ???? ?? ??? ??, ??? ??? ??? ??? ???? ?? ?????. ??? ???? ??? ??? ?? ???? ?????? ??? ???? ?? ?? ??? ??? ?????? ???? ????? ??? ?? ???? ???? ??? ?? ??? ?? ??? ? ?? ??, ???? ?? ?? ??? ????? ??? ?? ???? ??? ?? ?? ????. There's substantial variation and negotiation around the relationship concerning video clip activity developers