
Ko te mīhini tohu muka reera he whakamahinga o te hihi reera ki runga i ngā momo matū rerekē i runga i te mata o te tohu tuturu. Ko te pānga tohu mā te mimiti o te rauemi mata hei whakaatu i te rauemi hohonu, mā te hurihanga matū me te ā-tinana rānei o te rauemi mata i puta mai i te kaha mārama hei "whakairo" i ngā tohu, mā te kaha mārama rānei hei tahu i tētahi wāhanga o te rauemi, hei whakaatu i te tauira, te tuhinga, te waehere pae me ētahi atu whakairoiro e hiahia ana kia whakairohia. Ko te mīhini tohu muka reera e pā ana ki te mīhini tohu e whakamahi ana i te muka reera, he iti te rahi o te muka reera (kāore he taputapu whakamatao wai, he whakamahi i te whakamatao hau), he pai te kounga hihi (aratau taketake), he kore tiaki me ētahi atu āhuatanga.