Hi all, ... probably a very stupid question ... here is the content of the arrowp-0.5 README file ---begin--- Various arrow materials: preprocessor a prototype preprocessor translating arrow notation to Haskell. examples some illustrative applications of the preprocessor and libraries. The preprocessor works with GHC. The rest can be used with either Hugs or GHC (>= 5.00). ---end--- Does this mean that the preprocessor cannot be used with Hugs? In other words: can the generated code sometimes not be interpreted by Hugs? (because of subtle language and/or library differences, maybe?) I find this a little bit strange, since GHC has 'native' support for arrows anyway (via -farrows), so why does arrowp exist if it can be used with GHC but not with Hugs? Luc This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.