Hi all, Using one implicit parameter works fine for me, but when I use two, things seem to go astray. Here's a highly contrived example: main = do putStrLn $ mytrim with ?width = 20 with ?line = "The quick brown fox jumped over the lazy dog" mytrim | ?width > length ?line = ?line | otherwise = take ?width ?line But ghc complains: $ ghc -o scratch.exe scratch.hs -fglasgow-exts scratch.hs:8: Unbound implicit parameter `?width :: Int' arising from use of implicit parameter `?width' at scratch.hs:8 In the first argument of `(>)', namely `?width' In the definition of `mytrim': ?width > (length ?line) scratch.hs:8: Unbound implicit parameter `?line :: [Char]' arising from use of implicit parameter `?line' at scratch.hs:8 In the first argument of `length', namely `?line' In the second argument of `(>)', namely `length ?line' Can someone please tell me what I'm doing wrong? Thanks, Bryn Keller Senior Software Engineer Jenkon brk@jenkon.com