Hi all,

Brace yourselves for "The Whitespace Thing". This is an OCaml
preprocessor that uses your indentation to group expressions, like in
Python and Haskell. Effectively, the preprocessor auto-parenthesizes
expressions that are split over multiple lines, using your indentation
as clues. This eliminates syntax clutter such as multi-line
parenthesizations, the sequencing operators ; and ;; , and the
keywords done, end, and begin.

http://people.csail.mit.edu/mikelin/ocaml+twt/

Mike