Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r5c0b64ff51d9290431d94bfc6aced78a2d5370be -r43b787035c0bced47c483e95ed0be21914dcac0f
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 5c0b64ff51d9290431d94bfc6aced78a2d5370be)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 43b787035c0bced47c483e95ed0be21914dcac0f)
@@ -68,13 +68,13 @@
 /// Record for transmitted message that is pending acknowledgment from receiver.
 typedef struct
 {
-    BOOL used;
-    U16  seqNo;
-    U16  retries;
-    U32  timeStamp;
-    COMM_BUFFER_T channel;
-    U32  msgSize;
-    U08  msg[ MAX_ACK_MSG_SIZE ];
+    BOOL used;                                      ///< Used.
+    U16  seqNo;                                     ///< Message sequence number.
+    U16  retries;                                   ///< Number of retries.
+    U32  timeStamp;                                 ///< Time stamp.
+    COMM_BUFFER_T channel;                          ///< Channel ID.
+    U32  msgSize;                                   ///< Message size.
+    U08  msg[ MAX_ACK_MSG_SIZE ];                   ///< Message.
 } PENDING_ACK_RECORD_T;
 
 #pragma pack(pop)