Мы яво так зовем, уж не взыщите.http://ru.wikipedia.org/wiki/%D0%9A%D0%B8%D0%B5%D0%B2%D1%81%D0%BA%D0%B8%D0%B9_%D0%BD%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9_%D1%83%D0%BD%D0%B8%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%82%D0%B5%D1%82_%D0%B8%D0%BC%D0%B5%D0%BD%D0%B8_%D0%A2%D0%B0%D1%80%D0%B0%D1%81%D0%B0_%D0%A8%D0%B5%D0%B2%D1%87%D0%B5%D0%BD%D0%BA%D0%BE