Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r22a8500467c47070dff55824e2ec567c007434ce -rbe1f6ba8f58abfe098865c85ebca070eb0dde6ce
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 22a8500467c47070dff55824e2ec567c007434ce)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision be1f6ba8f58abfe098865c85ebca070eb0dde6ce)
@@ -8,32 +8,62 @@
  *  @{
  */
 
+// ********** private definitions **********
+
+// ********** private data **********
+
 static U32 testTimeRemove = 0;
 
+// ********** private function prototypes **********
+
+/*********************************************************************//**
+ * @brief
+ * The initPreTreatmentMode function initializes the Pre Treatment Mode unit.
+ * @details \b Inputs: none
+ * @details \b Outputs: Pre Treatment Mode unit initialized.
+ * @return none
+ *************************************************************************/
 void initPreTreatmentMode( void )
 {
     testTimeRemove = 0;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The transitionToPreTreatmentMode function prepares for transition to pre-treatment
+ * mode.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @return initial state
+ *************************************************************************/
 U32  transitionToPreTreatmentMode( void )
 {
     initPreTreatmentMode();
 
     testTimeRemove = getMSTimerCount();
+
     return 0;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The execPreTreatmentMode function executes the Pre Treatment Mode state machine.
+ * @details \b Alarm: TODO fill up once the exec function is complete
+ * the stop button
+ * @details \b Inputs: TODO fill up once the exec function is complete
+ * @details \b Outputs: TODO fill up once the exec function is complete
+ * @return current state (sub-mode)
+ *************************************************************************/
 U32  execPreTreatmentMode( void )
 {
-    if ( TRUE == didTimeout( testTimeRemove, 10000 ) ) // TODO temporary remove
+    if ( TRUE == didTimeout( testTimeRemove, 10000 ) ) // TODO temporary test code to just transition to treatment mode
     {
         requestNewOperationMode( MODE_TREA );
     }
 
     return 0;
 }
 
-
 /**@}*/