--- a/langtools/src/jdk.compiler/share/classes/com/sun/source/doctree/DocTree.java	Tue Aug 08 23:00:45 2017 +0000
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/source/doctree/DocTree.java	Tue Aug 15 13:16:32 2017 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -205,6 +205,12 @@
         START_ELEMENT,
 
         /**
+         * Used for instances of {@link SummaryTree}
+         * representing the summary of a comment description.
+         */
+        SUMMARY("summary"),
+
+        /**
          * Used for instances of {@link TextTree}
          * representing some documentation text.
          */