Thanks for that pointer. I never expected Shriram to propose one :) The parens are quite acceptable if you use syntax coloring options in DrRacket to make them

Thanks for that pointer. I never expected Shriram to propose one :) The parens are quite acceptable if you use syntax coloring options in DrRacket to make them light grey, which is what I do. Imo, P4P is just not worth the learning delta .. particularly because it doesn't solve the single biggest readability issue - math expressions - which exists even if you make all parens invisible. In my company, I came up with one myself (http://code.google.com/p/muvee-symbolic-expressions/wiki/TabSyntax http://code.google.com/p/muvee-symbolic-expressions/wiki/Tab...) when some aesthetic objections arose to the use of (paren (laden (scheme))) as a scripting language for our product. It is quite telling that we ended up not using the tab syntax in the end, though it is still available in the product :D