Le yityesi yomgubo yedayimane epholigonal emile ekhululekileyo enesiciko esisetyhula. Ngokubanzi, imveliso nayo ijikelezileyo, kodwa xa ijongwa ngokusondeleyo, umntu unokubona ukungafani kwayo. Le mveliso iza kwiindlela zombini kunye nangaphandle kweplate ephezulu. Le nto iza neplate ephezulu, enokuthi yenziwe ngeplastiki, isikhumba okanye idayimane, okanye ifakwe. Iinketho ezininzi, imibuzo ethile ingathunyelwa okanye i-imeyile iqhagamshelane nathi.