--- a/firefox-devel.rst	Fri Oct 25 23:25:42 2013 +0300
+++ b/firefox-devel.rst	Mon Oct 28 14:14:54 2013 +0200
@@ -119,10 +119,12 @@
 
 To see stack-trace use::
 
+  console.trace();
   console.log(new Error().stack);
 
 See:
 
+ * https://developer.mozilla.org/en-US/docs/Web/API/console
  * https://developer.mozilla.org/en/Using_the_Web_Console
  * https://developer.mozilla.org/en-US/docs/Tools/Web_Console