???? ??????? ??????? ???? ????? ??? undertakings ??? ????? short. ???? ??? ????????? obligations ??? party ???? ????? ????? equipment, including ????? ???????. Contributes ??? ????????? ?? minimizing ????????? ??? sides and clarifying responsibilities ?? ??? Aids ?? guaranteeing quality undertakings ????? ????? ???? ????? ????????? ?????? ?

??? ???? ?? ?????? ??? ???? ?????? ???? ??? ??????? ???????. ??? ???? ???? ?????? ??? ?????? ??????. ??? ??? ?????? ??? ????? ??? ??????? ????????, ??? ????? ????????. ?????? ????? ?????? ? ??? ???? ? ????? ??????. ??????? ??????? ?????? ???? ????? ????? ???? ??????? ???? ???? ?? ?? ?????. ?? ????? ??? ??????? ???? ???? ????? ?????? ??? ????????