diff --git a/include/trick/TPROCTEClock.hh b/include/trick/TPROCTEClock.hh
index 804a57b6..1bb12304 100644
--- a/include/trick/TPROCTEClock.hh
+++ b/include/trick/TPROCTEClock.hh
@@ -44,7 +44,7 @@ namespace Trick {
 
         private:
 #ifdef _TPRO_CTE
-            TPRO_BoardObj *pBoard ;
+            TPRO_BoardObj *pBoard ;  /* ** board handle */
 #endif
 
     } ;