#lang racket
;; Program goes here.

#lang slideshow
;; Program goes here.

#lang plait
if (isExplorer) {
    document.onmousemove =
        function () { ... };
} else {
    document.onmousemove =
        function () { ... };
}
function foo(n) {
  return function(m) { return m+n; };
}