Iyi mashini nubwoko bwibikoresho byiza byimyenda idoda (hamwe no gucapa cyangwa kutabikora) umufuka wubucuruzi, U-gukata umufuka, umufuka w umusego, umufuka winkweto, lente ukoresheje umufuka nibindi. Gukubita byikora, kubara byikora no gutabaza, gupakira byikora, guhagarara mu buryo bwikora iyo ikirango cyatakaye….