--- a/src/lte/model/simple-ue-component-carrier-manager.h	Thu Jun 01 16:57:22 2017 -0700
+++ b/src/lte/model/simple-ue-component-carrier-manager.h	Fri Jun 02 14:45:29 2017 +0200
@@ -58,11 +58,13 @@
 
 
 
-  // let the forwarder class access the protected and private members
+  /// let the forwarder class access the protected and private members
   friend class MemberLteUeCcmRrcSapProvider<SimpleUeComponentCarrierManager>;
   //friend class MemberLteUeCcmRrcSapUser<SimpleUeComponentCarrierManager>;
   
+  /// allow SimpleUeCcmMacSapProvider class friend access
   friend class SimpleUeCcmMacSapProvider;
+  /// allow SimpleUeCcmMacSapUser class friend access
   friend class SimpleUeCcmMacSapUser;
 
 protected: