Index: HDDefs.h
===================================================================
diff -u -r4a2ffc3da581d57351976ca97dd35f826b9eb8ef -r3e84b0d1a8625232a2b129ab704f423589981dfd
--- HDDefs.h	(.../HDDefs.h)	(revision 4a2ffc3da581d57351976ca97dd35f826b9eb8ef)
+++ HDDefs.h	(.../HDDefs.h)	(revision 3e84b0d1a8625232a2b129ab704f423589981dfd)
@@ -317,6 +317,23 @@
 /**@}*/
 
 /**
+ *  @addtogroup TreatmentStop
+ *  @{
+ */
+
+/// Enumeration of treatment stop sub-mode states.
+enum Treatment_Stop_States
+{
+    TREATMENT_STOP_RECIRC_STATE = 0,                                    ///< Dialysate re-circulation state of the treatment stop sub-mode state machine
+    TREATMENT_STOP_NO_RECIRC_STATE,                                     ///< No dialysate re-circulation state of the treatment stop sub-mode state machine
+    NUM_OF_TREATMENT_STOP_STATES                                        ///< Number of treatment stop sub-mode states
+};
+/// Type for treatment stop states enumeration.
+typedef enum Treatment_Stop_States TREATMENT_STOP_STATE_T;
+
+/**@}*/
+
+/**
  *  @addtogroup BloodPrime
  *  @{
  */