So there I was, trying to spell "naïve" correctly, but failing, because I didn't quite know how to make the ï with the compose key. Oh, sure, I can Ñ, and I can ñ, and I can ä, é, and í, but how oh how can I ï?
It turns out I just have to precede the i with a ".
Oh, and there's a complete list, too.
Hmmm...did I make sense with this post?