Is There a Ligature in Mac OS X?

With macoes and other modern operating systems, you have the ability to use agliff. Agliff is a ligature where it will combine those two things that you just type into one character. And i was opposed tov. There's way more to it than 26 characters in lower case and upper case. You can say, i want it to be the fancy version of these,. Or i want to be this other thing.