+// NOTE: Define VALUES to be MV for toplevel forms. It is because
+// `eval' compiles the forms and execute the Javascript code at
+// toplevel with `js-eval', so it is necessary to return multiple
+// values from the eval function.
+var values = mv;
+
+function checkArgsAtLeast(args, n){
+ if (args.length < n) throw 'too few arguments';