MS Word has a feature named Auto Correct that you might want to get acquainted with.
Perhaps you've noticed, with gratitude, that Word will fix some of your typos the instant you make them.
Perhaps you've noticed that some of those "typos" weren't actually anything that needed changing.
Perhaps you wish Word would fix some of the other mistakes you commonly make.
All this is set up in AutoCorrect and you can tailor it to your needs.
Go to Options and review AutoCorrect. (Use the help to find it if necessary.) AutoCorrect has a few options to check or uncheck. Following that is a long list of characters that Word will automatically replace with other characters. Scroll down this list and see what all Word is up to.
If you really want "nwo" to be left alone and not changed to "now", you can delete it here.
If you are forever typing "Amn" when you mean "Ann" you can add it here.
And you can set up AutoCorrect to change two hyphens (funky) to an en dash (classy). But you have to leave a comment on this blog to get me to reveal the secret.
I love hidden features.