diff -r d4e017c7e4fb -r ded53e19d23a .emacs-my
--- a/.emacs-my	Wed Feb 24 13:31:36 2010 +0200
+++ b/.emacs-my	Mon Mar 08 10:45:55 2010 +0200
@@ -323,6 +323,8 @@
 ;;  dired-recursive-copies 'top
 ;;  dired-recursive-deletes 'top)
 
+(put 'dired-find-alternate-file 'disabled nil) ; Enable 'a' command.
+
 ;; ----------------------------------------------------------------------
 ;; compression, archive.