--- a/src/wifi/model/wifi-mac-trailer.h	Fri May 06 18:31:42 2011 +0200
+++ b/src/wifi/model/wifi-mac-trailer.h	Fri May 06 18:34:24 2011 +0200
@@ -25,11 +25,18 @@
 
 namespace ns3 {
 
+
+
 /** 
  * The length in octects of the IEEE 802.11 MAC FCS field
  */
 static const uint16_t WIFI_MAC_FCS_LENGTH = 4;
 
+/**
+ * \ingroup wifi
+ *
+ * Implements the IEEE 802.11 MAC trailer 
+ */
 class WifiMacTrailer : public Trailer 
 {
 public: