Ibisobanuro bigufi:

Nibyiza byo gukwirakwiza ifumbire nimbuto zibyatsi mugihe cyizuba, cyangwa gushonga urubura mugihe cyitumba.Kora ibyatsi byoroshye hamwe nigishushanyo cya ergonomic, amapine manini, kandi byoroshye-gukoresha-kugenzura.