Ka pā pea te pōhēhētanga i waenganui i ngā ariā rerekē o te ōrau me ngā ira ōrau he pōhēhētanga nui ina pūrongo ngā kaihautū mō ngā hua pōti, hei tauira, e whakaatu ana i ngā hua hōu me ngā rerekētanga ki ngā hua tōmua hei ōrautanga.