<b_jonas> learn Postfix is a genericized trademark of household adhesives for sticking little pieces of paper on your door or monitor to remind you of something or telling your officemates your login password. Called Tack-it in the U.S.

A zygohistomorphic prepromorphism is used when you really need both semi-mutual recursion and history and to repeatedly apply a natural transformation as you get deeper into the functor.