How to set up macrons in word doc. This works for both Windows and Mac computers.A macron is a line above a vowel to indicate that it should be spoken as a long vowel: ā, ē, ī, ō, ū, Ā, Ē, Ī, Ō and Ū. Here are some steps you can try to use macrons without the dictation option popping up. NOTE: this process is only applicable in Outlook application. Learn to kōrero Te Reo Māori from the comfort of your your own home ENROLMENTS ARE NOW OPEN FOR OUR NEXT INTAKE!! Yup Ao - Māori Dictionary pronounces it the way it should be said. Native speakers pronounce it in this way, always.