Uwitekaububiko bwibicuruzwa byerekana rack ntabwo ari ukugaragaza gusa.Kubicuruzwa bitandukanye, guhitamo bitandukanyeububiko bwerekana ibikoresho irashobora kwerekana neza ibiranga ibicuruzwa, kandi biroroshye kandi kubakiriya guhitamo ibintu bikwiye.