(indent-rigidly): Mention how to remove all indentation.

diff --git a/lisp/indent.el b/lisp/indent.el
index da0e04bb1b78b3d9059e270b4f09084524e1ebfc..cdf5ac49b9ec3a5cf00047db307b6644338e3274 100644 (file)
--- a/lisp/indent.el
+++ b/lisp/indent.el
@@ -104,7 +104,8 @@ The function actually called to indent is determined by the value of
 
 (defun indent-rigidly (start end arg)
   "Indent all lines starting in the region sideways by ARG columns.
-Called from a program, takes three arguments, START, END and ARG."
+Called from a program, takes three arguments, START, END and ARG.
+You can remove all indentation from a region by giving a large negative ARG."
   (interactive "r\np")
   (save-excursion
     (goto-char end)