--- a/perf.js	Thu Sep 11 20:01:40 2014 +0300
+++ b/perf.js	Mon Sep 15 02:49:02 2014 +0300
@@ -1,10 +1,9 @@
 "use strict";
 
 ////////////////////////////////////////////////////////////////
-// Performance testing toolkit.
+/** @fileOverview Performance testing toolkit. */
 ////////////////////////////////////////////////////////////////
 
-
 /* Invoce 'fn' function 'n' times with 'this' set to 'ctx'.
  * Use 'ctx' to initialise test and to pass state between calls. */
 function perf(msg, fn, n, ctx) {