Index: trunk/MagicSoft/Mars/mfileio/MWriteRootFile.h
===================================================================
--- trunk/MagicSoft/Mars/mfileio/MWriteRootFile.h	(revision 6994)
+++ trunk/MagicSoft/Mars/mfileio/MWriteRootFile.h	(revision 7000)
@@ -88,4 +88,5 @@
         // TBranch::kAutoDelete = BIT(15)
         // TBranchElement::kDeleteObject = BIT(16)
+        // TTree::kFriendLock = BIT(17)
         kIsNewTree  = BIT(17)
     };