--- a/README	Fri May 12 21:00:39 2017 +0200
+++ b/README	Fri May 12 21:21:31 2017 +0200
@@ -119,6 +119,9 @@
  - topic: have thg display topic name if possible,
  - obscache: more efficient update in the (rare) case of a transaction adding
    markers without changesets
+ - obshashrange-cache: update incrementally in the (common) case of a
+   transaction not affecting existing range,
+ - obshashrange-cache: keep the cache mostly warm after each transaction.
 
 6.1.1 - in progress
 -------------------