diff --git a/doc/dired.org b/doc/dired.org
index b66d8fb..5791c0a 100755
--- a/doc/dired.org
+++ b/doc/dired.org
@@ -48,3 +48,14 @@ and kill with "D"
  * To use ~nano~ editor within emacs use:
    * 'CTRL + shift + o' instead of 'CTRL+o' to save changes
    *  ESC + ESC + x to close ~nano~
+
+** Renaming multiple files in Dired
+
+ * Use ~M-x wdired-change-to-wdired-mode~
+ * Or (this is equivalent), use ~C-x C-q~ in a dired session.
+ * Then you can edit all the files manually.
+ * To escape from edition use ~C-c C-c~
+
+
+** Substitute text in multiple files within a directory
+