Index: firmware/App/Modes/Dialysis.h
===================================================================
diff -u -r9b262ba08e3180f121c3cf19d8d25e565183f87d -r108abddcbf729f7435073116191cd3903261df8f
--- firmware/App/Modes/Dialysis.h	(.../Dialysis.h)	(revision 9b262ba08e3180f121c3cf19d8d25e565183f87d)
+++ firmware/App/Modes/Dialysis.h	(.../Dialysis.h)	(revision 108abddcbf729f7435073116191cd3903261df8f)
@@ -27,13 +27,25 @@
  *  @{
  */
 
+// ********** public definitions **********
+
+/// Enumeration of system message IDs.
+typedef enum UF_Commands
+{
+    UF_CMD_PAUSE = 0,               ///< Pause UF command.
+    UF_CMD_RESUME,                  ///< Resume UF command.
+    NUM_OF_UF_CMDS                  ///< # of UF commands.
+} UF_CMD_T;
+
 // ********** private function prototypes **********
 
 void initDialysis( void );
 void transitionToDialysis( void );
 void execDialysis( void );
 
 void setDialysisParams( U32 bPFlow, U32 dPFlow, F32 maxUFVol, F32 uFRate );
+BOOL pauseUF( void );
+BOOL resumeUF( void );
 
 void startDialysis( void );
 void stopDialysis( void );