Index: README.md
==================================================================
--- README.md
+++ README.md
@@ -13,11 +13,13 @@
 -----
     AppFS should normally be mounted on "/opt/appfs".
 
     /opt/appfs/hostname
     	Fetches: http://hostname/appfs/index
-    	Contains CSV file: hash,extraData
+    	Contains CSV file: hash,hashMethod,<certificateInDERFormatInHex>,<PKCS#1v1.5-signature-inDERFormatInHex>
+	                   \-------------/
+                                  ^- Signed data
     	Fetches: http://hostname/appfs/sha1/<hash>
     	Contains CSV file: package,version,os,cpuArch,sha1,isLatest
 
     /opt/appfs/hostname/package/os-cpuArch/version
     /opt/appfs/hostname/sha1/