function ValueClosure(varName, expr) {
  this.varName = varName;
  this.expr = expr;
}
ValueClosure.prototype = {
  toString: function () {
    return "#<closure>"
  }
}

@@ -107,16 +107,157 @@
 ype = %7B%0A
+  call: function (arg, env) %7B%0A    var newEnv = new EnvLocal(env);%0A    newEnv.add(this.varName, arg);%0A    return this.expr.eval(newEnv);%0A  %7D,%0A
   toStri

Add ValueClosure#call