diff -r fc123bdeddb8 -r 25e14ad23cef src/share/classes/com/sun/tools/doclets/formats/html/TreeWriter.java
--- a/src/share/classes/com/sun/tools/doclets/formats/html/TreeWriter.java	Tue Oct 09 19:31:58 2012 -0700
+++ b/src/share/classes/com/sun/tools/doclets/formats/html/TreeWriter.java	Wed Oct 10 16:48:21 2012 -0700
@@ -38,6 +38,11 @@
  * the generated file is "overview-tree.html" and it is generated in the
  * current or the destination directory.
  *
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ *
  * @author Atul M Dambalkar
  * @author Bhavesh Patel (Modified)
  */