[Haskell-cafe] Richer (than ascii) notation for haskell source?

[Henning Thielemann]

On Wed, 14 May 2008, Patrick Surry wrote:

> Probably a silly question, but for me one of the nice things about
> Haskell is that it's a lot like just writing math(s).  But in contrast
> to math you lose a lot of notational flexibility being limited to the
> ascii character set in your source code.

Leksah supports visualizing keywords as fancy symbols:
   http://www.leksah.org/