Index: firmware/App/Controllers/SubstitutionPump.c
===================================================================
diff -u -rf90c1eef73251d75ce49645eb05deb492a486ff0 -r999e55125e62af895a8b2bed425c0a61eb887a0a
--- firmware/App/Controllers/SubstitutionPump.c	(.../SubstitutionPump.c)	(revision f90c1eef73251d75ce49645eb05deb492a486ff0)
+++ firmware/App/Controllers/SubstitutionPump.c	(.../SubstitutionPump.c)	(revision 999e55125e62af895a8b2bed425c0a61eb887a0a)
@@ -14,12 +14,13 @@
 * @date    (original)  5-May-2026
 *
 ***************************************************************************/
-#include "SubstitutionPump.h"
+
 #include "FpgaDD.h"
 #include "MessageSupport.h"
 #include "Messaging.h"
 #include "OperationModes.h"
 #include "PersistentAlarm.h"
+#include "SubstitutionPump.h"
 #include "TaskGeneral.h"
 #include "Utilities.h"
 
@@ -43,8 +44,8 @@
                                                                 SUBSTITUTION_PUMP_MICRO_STEPS_PER_STEP ) )      ///< Convert volume in to number of revolutions needed.
 #define SUBSTITUTION_PUMP_STEP_PERIOD_RESOLUTION             ( 0.50F / ( US_PER_SECOND * SEC_PER_MIN ) )        ///< Convert step period resolution (0.50 us) to minute.
 
-#define SUBSTITUTION_PUMP_FORWARD_DIR                        0x1                                                ///< Concentrate pump forward direction configuration.
-#define SUBSTITUTION_PUMP_REVERSE_DIR                        0x0                                                ///< Concentrate pump reverse direction configuration.
+#define SUBSTITUTION_PUMP_FORWARD_DIR                        0x1                                                ///< Substitution pump forward direction configuration.
+#define SUBSTITUTION_PUMP_REVERSE_DIR                        0x0                                                ///< Substitution pump reverse direction configuration.
 #define SUBSTITUTION_PUMP_CONTROL_SIXTY_FOUR_STEP            0x04                                               ///< Substitution pump control 1/8th step.
 #define SUBSTITUTION_PUMP_CONTROL_REVERSE_DIR                0x00                                               ///< Substitution pump control reverse direction.
 #define SUBSTITUTION_PUMP_CONTROL_FORWARD_DIR                0x08                                               ///< Substitution pump control forward direction.
@@ -104,7 +105,7 @@
 static OVERRIDE_U32_T substitutionPumpDataPublishInterval;                                                      ///< Substitution pump data publish interval.
 static SUBSTITUTION_PUMP_T substitutionPumps[ NUM_OF_SUB_PUMPS ];                                               ///< Array of Substitution pumps' data structure.
 static OVERRIDE_F32_T pumpTargetSpeed[ NUM_OF_SUB_PUMPS ];                                                      ///< Target substitution pumps' speed (mL/min).
-static U32 substitutionPumpPublishTimerCounter;
+static U32 substitutionPumpPublishTimerCounter;                                                                 ///< Substitution pump data publication counter.
 
 // ********** private function prototypes **********
 
@@ -470,7 +471,7 @@
  *************************************************************************/
 static void publishSubstitutionPumpData( void )
 {
-    // publish RO pump data on interval
+    // publish substitution pump data on interval
     if ( ++substitutionPumpPublishTimerCounter >= getU32OverrideValue( &substitutionPumpDataPublishInterval ) )
     {
         SUBSTITUTION_PUMP_DATA_T pumpData;