--- a/langtools/src/share/classes/com/sun/tools/javac/util/AbstractDiagnosticFormatter.java	Mon Jul 27 15:20:03 2009 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/util/AbstractDiagnosticFormatter.java	Mon Jul 27 19:52:42 2009 -0700
@@ -57,6 +57,10 @@
  *  <li> Provides the formatting logic for rendering the arguments of a JCDiagnostic object.
  * <ul>
  *
+ * <p><b>This is NOT part of any API supported by Sun Microsystems.
+ * 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>
  */
 public abstract class AbstractDiagnosticFormatter implements DiagnosticFormatter<JCDiagnostic> {