Hi Simon, Andy, et al. | [Hugs and GHC should agree on a syntax for forall expressions ... one | that doesn't require commas between variable names ...] | | forall tends to be used with one argument, hence the reason its not | really biting right now. The reason it's not biting is that the problem doesn't exist! :-) I have strong recollections that I noticed and fixed this inconsistency while traveling on a train through the French countryside in September 1999 ... even if my memory is failing me, the most recent Hugs seems to accept forall's without commas between arguments. Perhaps Simon is using an old version of Hugs, looking at some out of date documentation, or has found a specific instance where the change was missed? All the best, Mark