In the rope trade, right-hand lay is described as Z twist and left-hand lay as S twist, the letters indicating the direction of the lay when the rope is viewed from above.
Kurhwebo lwentsontelo, ukondlalelwa kwicala lasekunene kuchazwa njengesijiji esingu-Z sise esisekhhlo sona sichazwe njengo-S, aba nobumba babonisa icala eyondlalelwa kulo intsontelo xa ijongelwa ngasentla.