Ibisobanuro bigufi:

Ibyuma bigenda ku murongo ugororotse ku nzira igororotse ni iby’ibyuma bisanzwe. Ibyuma bikoresha umurongo ugororotse bikoreshwa mu kugena aho umugozi uzenguruka n’ibindi bice biherereye, kugira ngo bishyigikire cyangwa biyobore ibice. Inshingano nyamukuru y’ibyuma bikoresha umurongo ugororotse ni ugushyigikira umubiri uzenguruka kugira ngo ugabanye umuvuduko w’ibikoresho mu nzira yo kohereza ibikoresho.