Ko te miihini whakawaehere he momo taputapu e whakahaerea ana e te raupaparorohiko me te whakamahi tikanga kore-whakapapa hei tohu i te ra o te hua me te tino aro ki te inu, pia, wai kohuke me etahi atu ahumahi.Mai i te mīhini tā i whakamahia ki te whakarōpū i ngā kai pau: ko tētahi he mīhini tā waituhi;ko tetahi atu he miihini tohu waituhi-kore (miihini tohu laser).