I am part of a project working on an implementation of an HSP system, very much inspired by the paper you mention by Eric Meijer and Daan Leijen. It is our goal to make a complete HSP system with a model for HTML in Haskell, a pre-processor, and a runtime system/plugins for various web servers. The ETA is set to May -04, until then you can follow our progress at http://www.dtek.chalmers.se/~d00nibro/hsp/ There is a simple version of a pre-processor available from our Download page, but use it at your own risk ;) /Niklas _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus