[fix] #749 10/13 Missing final operation + rename UCP to DUP

doc/Protocol.md

-# UCP - Duniter Protocol
+# DUP - Duniter Protocol
 
 > This document is still regularly updated (as of August 2016)
 
@@ -2321,6 +2321,10 @@ If `REDUCED.revokes_on<=HEAD.medianTime AND REDUCED.revoked_on==null`, add a new
         revoked_on = HEAD.medianTime
     )
 
+##### Final INDEX operations
+
+All the LOCAL INDEX values (IINDEX, MINDEX, CINDEX, SINDEX, BINDEX) have to be appended to the GLOBAL INDEX.
+
 ### Peer
 
 #### Global validation