typesupply/opentype-feature-intro — pull request #3 by benkiel (2014-08-07 21:56:08+00:00)
Title: Primes

Looking through, the word boundary example was missing primes, the ordn, etc example likely don't need primes, and this raises the question of explaining when primes are needed more in depth, as this just confused the heck out of me for far too long.