--- a/emacs.rst	Sat May 12 16:43:18 2012 +0300
+++ b/emacs.rst	Sun May 13 13:16:35 2012 +0300
@@ -84,6 +84,10 @@
 
 When next time that function called automatically loaded debug-mode.
 
+You can use ``(debug)`` in your function to automatically enter to debugger.
+
+You can use ``(backtrace)`` to print a trace of Lisp function.
+
 How debug ini file?
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