RE: [Haskell-cafe] Ideas

What intriged me mostly was how it can display infinite data structures lazily. I think it's certainly a great tool for teaching some aspects of functional programming: helping newbies to understand and define data Structures, say.

Definitely! It's really cool stuff. But something like that for real Haskell (e.g. GHC) would be even better :) I could be an offline downloadable application. It would be a very nice tool: create postscript (or PDF, or LaTex, whatever rich text format) documents with Haskell "boxes" inside. Real literate programming... Oh well ;)