A dieresis (umlaut) is a mark ¨ , consisting of two dots, placed over a vowel to show it’s pronounced as a separate syllable.
Here’s how to type one over an “e” on a computer keyboard:
- Must have your keyboard set to “Num Lock on.”
- Use the number keys in the Num Lock section, to the right of the regular typing keys.
- Hold down the “Alt” key and type 0235.
- An ë will appear!
This should work in nearly every program, including text-only.