Ko te whakamātautau PD te whakamātautau matua mō te whakamahana o ngā taputapu hiko, ā, ko te tukunga wāhanga te tawhā nui o te kounga o ngā taputapu hiko. Kei runga i te whakarerekētanga te pūoko, e hoahoa ana i ngā wāhanga whakatauira hei waeine paerewa e ai ki ngā mahi rerekē. Ka taea te tāpiri, te muku rānei i ngā waeine e ai ki ngā hiahia o te kaiwhakamahi. He momo paerewa o Ūropi te waeine, he watea mō te tiaki me te whakahou. E whakamahi ana i te pūnaha tukatuka taputapu matatau, me te kāri NI mai i te America National Instrument. E whakamahi ana hoki i te tātari mamati me ētahi atu taputapu tukatuka tohu hei kohikohi me te tātari i te tohu PD.