[Haskell-cafe] Haddock infix constructors in markup

Hi all, If I have the following data type: data Expr = Num Int | Expr :+: Expr | Expr :-: Expr Haddock handles the infix constructors, and generates a very nice output (html in this case) However when I try to reference to one of the infix constructors in the markup of other functions it fails to hyperlink. -- | If the input is 'Num' does magic, if it is ':+:' does even more magic! someFunc :: Expr -> Expr In the output of this markup, the 'Num' is hyperlinked but the ':+:' is not. Is there a different syntax for infix constructors (and for infix functions presumably) or does haddock simple lack this feature? Best, -- Ozgur Akgun