[Haskell-cafe] How to understand the 'forall' ?

data Branch tok st a = forall b. Branch (PermParser tok st (b -> a)) (GenParser tok st b) please shed a light on me, thanks! -- View this message in context: http://www.nabble.com/How-to-understand-the-%27forall%27---tp25250783p252507... Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.