Ngaphakathi nangaphandle yonke injongo yokucoca i-4L iyona nto iphezulu yokucoca injongo kwimarike.Le mveliso ingasetyenziselwa zonke iindawo zangaphakathi kunye nezangaphandle zemoto, kubandakanywa amavili, iinjini, amathayi kunye namavili, iikhaphethi zasekhaya, kunye nezixhobo zeofisi.