--- jsr166/src/test/tck/JSR166TestCase.java	2014/06/16 18:01:38	1.118
+++ jsr166/src/test/tck/JSR166TestCase.java	2014/06/16 20:13:54	1.119
@@ -115,6 +115,10 @@ public class JSR166TestCase extends Test
     protected static final boolean expensiveTests =
         Boolean.getBoolean("jsr166.expensiveTests");
 
+    /**
+     * If true, also run tests that are not part of the official tck
+     * because they test unspecified implementation details.
+     */
     protected static final boolean testImplementationDetails =
         Boolean.getBoolean("jsr166.testImplementationDetails");