It's easy to get macrons on your smartphone, just hold your finger on the vowel and the macron will show up as one of the accent options. How to set up macrons in word doc.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. The macron a little line above some vowels indicates vowel length. This works for both Windows and Mac computers. It turns out that Māori does, in fact, have proofing available, and so I followed the above instructions. It did take me a minute to find the Option tab. 100 Māori words for everyday usage. They can read and write simple notes and short letters and fill out simple forms.