Isibane esingagqabhuki sinokukhanyisa ngaphandle kocingo oluphantsi komhlaba, ukanti olu seto luyasilela ekufezekiseni imigangatho yomgangatho okhuselekileyo ogunyazisiweyo wezixhobo zombane ezingagqabhuki..
Ukuqinisekisa ukhuseleko, Umhlaba Okhuselayo (PE) Uqhagamshelo luncanyathiselwe kwisibane sobungqina bokudubula. Xa kukho ukuvuza, umsinga wenzelwe ukuphambukisa kulo mgca ukuya emhlabeni, ukusebenza ngokufana nocingo olungathathi hlangothi kunye nokubonelela ngekhonkco elithe ngqo ekukhanyeni.