Orthography in MS Word

[David L. Frye]

By "macron" do you mean a solid line above the letter? Typing ctrl-shift-:
followed by a vowel will give you the vowel with two dots above it (a
diaresis, I think it is called). There is no automatic key combo for a
macron, but you can easily set it up. Go to "Insert" then "Symbol",
make sure the "Font" says "normal text," then look for the letter you want
to insert. Click on it.

If you will be doing this often, you can set up a "Shortcut Key."
(Click on the button near the bottom of the Insert Symbol window.) The
natural combo for a macron would be ctrl-(hyphen)-A, etc. You will have to
set up each vowel separately.