[Haskell-beginners] Down in Data.Ord vs GHC.Exts

While attempting to do some sorting, I ran across Down. The docs: http://hackage.haskell.org/packages/archive/base/latest/doc/html/Data-Ord.ht... it's in Data.Ord, but GHCi 7.4.1 complains the Down data constructor isn't in scope, but if I import GHC.Exts ( http://hackage.haskell.org/packages/archive/base/latest/doc/html/GHC-Exts.ht...), I get the constructor I expect. Are the docs wrong? Or is there something I'm not doing right to get Down exported from Data.Ord? Or other things to check? Thanks, Matthew