Ishidi lensimbi elipendwe kusengaphambili ekhoyili liyinsimbi evame ukusetshenziswa kakhulu ekwazi ukumelana nokugqwala kanye nezakhiwo ezinhle zokwakha, ngakho lisetshenziswa kakhulu ekwakheni, kwezokuthutha, ezintweni zikagesi, njll. ishidi eliqinile, elithi “X ” libonisa ukuthi i-substrate iyishidi eligoqiwe elishisayo, “51″: inombolo yomkhiqizo, ayikho incazelo ethile, egameni lokusetshenziswa okuvamile.