Ubwa mbere, hitamo ukurikije ibikenewe. Iyo uhisemo amatara yinganda nubucukuzi bwinganda nkamakara, peteroli, ninganda zikora imiti, ntabwo ari ngombwa gusuzuma gusa niba ...
Imirasire y'izuba ni sisitemu yigenga idakenera guhuzwa na gride kandi yishingikiriza kumirasire y'izuba. Igizwe nibikoresho byinshi, nkisoko yumucyo, imirasire yizuba, ...