diff -r efac989a60dd -r 7477a052aecc jdk/src/java.base/share/classes/java/lang/InheritableThreadLocal.java
--- a/jdk/src/java.base/share/classes/java/lang/InheritableThreadLocal.java	Fri Dec 18 14:43:24 2015 +0100
+++ b/jdk/src/java.base/share/classes/java/lang/InheritableThreadLocal.java	Fri Dec 18 16:06:24 2015 +0000
@@ -40,6 +40,11 @@
  * maintained in the variable (e.g., User ID, Transaction ID) must be
  * automatically transmitted to any child threads that are created.
  *
+ * <p>Note: During the creation of a new {@link
+ * Thread#Thread(ThreadGroup,Runnable,String,long,boolean) thread}, it is
+ * possible to <i>opt out</i> of receiving initial values for inheritable
+ * thread-local variables.
+ *
  * @author  Josh Bloch and Doug Lea
  * @see     ThreadLocal
  * @since   1.2