ugly while you are typing in new text, and the location of point is
enough in that case to show you that the spaces are present.)
+@findex delete-trailing-whitespace
+ To delete all trailing whitespace within the current buffer's
+restriction (@pxref{Narrowing}), type @kbd{M-x
+delete-trailing-whitespace @key{RET}}. (This command does not remove
+the form-feed characters.)
+
@vindex indicate-empty-lines
@vindex default-indicate-empty-lines
@cindex empty lines