Hi, I was wondering if it was on the list of things to do to get a Binary module into the standard libraries. I know SimonM has a version for GHC and there's an NHC version (I think the original). I don't know about Hugs. I ask because by putting it in the standard libs, library developers could feel more pressured to release their data structures with Binary instances. - Hal -- Hal Daume III "Computer science is no more about computers | hdaume@isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume