--- a/blob_changes_v3	Fri Dec 02 21:42:38 2011 -0800
+++ b/blob_changes_v3	Fri Dec 02 22:09:48 2011 -0800
@@ -1,6 +1,8 @@
 Changes between arXiv version 2 and arXiv version 3
 ---------------------------------------------------
 
+(These are changes in addition to the items in the referee report.)
+
 Many small clarifications of text.  
 
 Many typos corrected.