Izibane ezithintela uqhushumbo, ibhedi80 esetyenziswa kwiindawo ezinobungozi apho kukho iirhasi ezitshayo nothuli, enokuthintela ii-arcs, iintlantsi, kunye namaqondo obushushu aphezulu anokuthi enzeka ngaphakathi ekukhanyeni ukusuka ekutshiseni iigesi ezivuthayo kunye nothuli kwindawo engqongileyo, ngaloo ndlela ikhawulelana neemfuno zokuthintela uqhushumbo.