Index: sources/model/hd/data/MHDOperationModeData.h
===================================================================
diff -u -r6cad9b004e904200b71de7431c745795256080df -r4afc91856c00e01dfb5d84bc54d2d92faefec0db
--- sources/model/hd/data/MHDOperationModeData.h	(.../MHDOperationModeData.h)	(revision 6cad9b004e904200b71de7431c745795256080df)
+++ sources/model/hd/data/MHDOperationModeData.h	(.../MHDOperationModeData.h)	(revision 4afc91856c00e01dfb5d84bc54d2d92faefec0db)
@@ -37,6 +37,7 @@
  * | Payload  ||
  * |          ||
  * | #1:(U32) | \ref Data::mOpMode  |
+ * | #2:(U32) | \ref Data::mSubMode |
  *
  * \sa Data
  *
@@ -53,11 +54,11 @@
     // friends
     friend class ::tst_models;
 
-    // HD Operation Mode    (U32) HD Op Mode
     QVariantList parameters() const override;
 
     struct {
-        Types::U32  mOpMode    ;
+        Types::U32  mOpMode     ;
+        Types::U32  mSubMode    ;
     } _data;
 
 public:
@@ -67,7 +68,8 @@
     QString      infoText  () const override { return QString("OpMode"); }
 
     struct Data {
-        quint32     mOpMode = 0;  ///< HD operation mode
+        quint32     mOpMode     = 0;  ///< HD operation mode
+        quint32     mSubMode    = 0;  ///< HD operation sub mode. In each OpMode sub mode has different meaning regarding the OpMode.
     };
 
     MHDOperationMode () {}