Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -rbd241ef5231a9869adaf7bb5ed166135beb2c0fb -re710c031a8032d03e8926b71f1f7b999fb58211f
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision bd241ef5231a9869adaf7bb5ed166135beb2c0fb)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision e710c031a8032d03e8926b71f1f7b999fb58211f)
@@ -55,15 +55,15 @@
     U32 resID;                                      ///< Active reservoir ID
     U32 setFillToVolumeMl;                          ///< Reservoir set fill to target volume in ml
     U32 setDrainToVolumeMl;                         ///< Reservoir set drain to target volume in ml
-    U32 timeReservoirCycleMS;
-    U32 timeReservoirFill2SwitchMS;
-    F32 timeUFDecayMS;
-    F32 tempUFFill;
-    F32 tempReservoirUseActual;
-    F32 tempReservoirEndFill;
-    F32 tempAvgFill;
-    F32 tempLastFill;
-    F32 timereservoirFill;
+    U32 timeReservoirCycleMS;                       ///< Reservoir time cycle in milliseconds
+    U32 timeReservoirFill2SwitchMS;                 ///< Reservoir time fill to switch in milliseconds
+    F32 timeUFDecayMS;                              ///< Ultrafilter decay time in milliseconds
+    F32 tempUFFill;                                 ///< Ultrafilter fill temperature in C
+    F32 tempReservoirUseActual;                     ///< Reservoir actual use temperature in C
+    F32 tempReservoirEndFill;                       ///< Reservoir end of the fill temperature in C
+    F32 tempAvgFill;                                ///< Average fill temperature in C
+    F32 tempLastFill;                               ///< Last fill temperature in C
+    F32 timereservoirFillMS;                        ///< Reservoir fill time in milliseconds
 } DG_RESERVOIRS_DATA_PAYLOAD_T;
 
 /// Payload record structure for DG temperature sensors data message.
@@ -123,11 +123,11 @@
 /// Dialysate heating parameters
 typedef struct
 {
-    F32 trimmerTargetTemperature;
-    U32 timeReservoirCycleMS;
-    F32 timeReservoirFillMS;
-    U32 timeReservoirWait2SwitchMS;
-    F32 dialysateFlowLPM;
+    F32 trimmerTargetTemperature;                   ///< Trimmer target temperature
+    U32 timeReservoirCycleMS;                       ///< Reservoir cycle time in milliseconds
+    F32 timeReservoirFillMS;                        ///< Reservoir fill time in milliseconds
+    U32 timeReservoirWait2SwitchMS;                 ///< Reservoir wait to switch time in milliseconds
+    F32 dialysateFlowLPM;                           ///< Dialysate flow in L/min
 } DG_CMD_DIALYSATE_HEATING_PARAMS_T;
 
 // ********** public function prototypes **********