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-rw-r--r--lisp/rot13.el7
1 files changed, 6 insertions, 1 deletions
diff --git a/lisp/rot13.el b/lisp/rot13.el
index c2332c72aee..a3307ea352e 100644
--- a/lisp/rot13.el
+++ b/lisp/rot13.el
@@ -48,7 +48,12 @@
;;;###autoload
(defun rot13-other-window ()
"Display current buffer in rot 13 in another window.
-To terminate the rot13 display, delete that window.
+The text itself is not modified, only the way it is displayed is affected.
+
+To terminate the rot13 display, delete that window. As long as that window
+is not deleted, any buffer displayed in it will become instantly encoded
+in rot 13.
+
See also `toggle-rot13-mode'."
(interactive)
(let ((w (display-buffer (current-buffer) t)))