diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index f7b90ca..469d606 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 7.3c.  Last change: 2010 Jul 25
+*options.txt*	For Vim version 7.3c.  Last change: 2010 Jul 28
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1741,12 +1741,15 @@
 
 	Value		Effect ~
 	0		Text is shown normally
-	1		Each block of concealed text is replaced with the
-			character defined in 'listchars' (default is a dash)
-			and highlighted with the "Conceal" highlight group.
+	1		Each block of concealed text is replaced with one
+			character.  If the syntax item does not have a custom
+			replacement character defined (see |:syn-cchar|) the
+			character defined in 'listchars' is used (default is a
+			space).
+			It is highlighted with the "Conceal" highlight group.
 	2		Concealed text is completely hidden unless it has a
 			custom replacement character defined (see
-			|:syn-cchar|.
+			|:syn-cchar|).
 	3		Concealed text is completely hidden.
 
 	Note: in the cursor line concealed text is not hidden, so that you can