Index: firmware/App/Modes/ModeFill.h
===================================================================
diff -u -r6530db1926d689b51c2f5fcd6ae928c40ebf5f42 -rb0f90032367640dd22ddfbe0307a20cb6e931ceb
--- firmware/App/Modes/ModeFill.h	(.../ModeFill.h)	(revision 6530db1926d689b51c2f5fcd6ae928c40ebf5f42)
+++ firmware/App/Modes/ModeFill.h	(.../ModeFill.h)	(revision b0f90032367640dd22ddfbe0307a20cb6e931ceb)
@@ -49,6 +49,7 @@
     F32 usedAcidVolumeML;                       ///< The used acid volume in ML.
     F32 usedBicarbVolumeML;                     ///< The used bicarb volume in ML.
     F32 integratedVolumeML;                     ///< Integrated volume in milliliters.
+    U32 roOnlyModeStatus;                       ///< RO only mode status.
 } DG_FILL_MODE_DATA_T;
 
 // ********** public function prototypes **********
@@ -60,21 +61,20 @@
 U32  execFillMode( void );          // execute the fill mode state machine (call from OperationModes)
 
 F32  getAvgFillFlowRateLPM( void );
-
 F32  getAvgFillTemperature( void );
-
 F32  getLastFillTemperature( void );
 
 void setThisFisrtFillFlag( BOOL flag );  // indicates bottles need prime when set to TRUE
-
 void resetFillStatusParameters( void );
 
 BOOL isThisTheFirstFill( void );
 
 F32  getChemicalUsedVolumeML( CHEMICAL_BOTTLES_T bottle );
-
 void resetChemicalUsedVolumeML( CHEMICAL_BOTTLES_T bottle );
 
+void enableROOnlyMode( void );
+BOOL isROOnlyModeEnabled( void );
+
 BOOL testSetUsedAcidVolumeMLOverride( F32 value );
 BOOL testResetUsedAcidVolumeMLOverride( void );