Index: firmware/App/Modes/ModeFill.h
===================================================================
diff -u -ra89d6b091874136d75a9bfbdbbc1ff00f42467b3 -r27e2d12e453375d3595368ec25a0ff3a6aba2d09
--- firmware/App/Modes/ModeFill.h	(.../ModeFill.h)	(revision a89d6b091874136d75a9bfbdbbc1ff00f42467b3)
+++ firmware/App/Modes/ModeFill.h	(.../ModeFill.h)	(revision 27e2d12e453375d3595368ec25a0ff3a6aba2d09)
@@ -31,11 +31,12 @@
 
 // ********** public definitions **********
 
+/// Chemical bottles
 typedef enum
 {
-    ACID = 0,
-    BICARB,
-    NUM_OF_CHEMICALS,
+    ACID = 0,                                   ///< Acid.
+    BICARB,                                     ///< Bicarb.
+    NUM_OF_CHEMICALS,                           ///< Number of chemicals.
 } CHEMICAL_BOTTLES_T;
 
 /// DG broadcast dialysate fill data structure.