Why don't you use indentation instead of parenthesis yet?
Name:
Anonymous2014-07-19 1:45
Get rid of the text file limitations and allow the s-expression to be directly edited in a graphical tree view using the mouse and keyboard. (Or touch gestures on a tablet.)
define |-- factorial | \-- n \-- if |-- <= | |-- n | \-- 1 |-- 1 \-- * |-- n \-- factorial \-- - |-- n \-- 1