diff -r 294b82356191 -r 10d56d5c0830 src/helper/wifi-helper.h
--- a/src/helper/wifi-helper.h	Fri Aug 14 12:31:08 2009 +0200
+++ b/src/helper/wifi-helper.h	Fri Aug 14 12:31:13 2009 +0200
@@ -96,7 +96,8 @@
    * \returns a new WifiHelper in a default state
    *
    * The default state is defined as being an Adhoc MAC layer with an ARF rate control algorithm
-   * and both objects using their default attribute values.
+   * and both objects using their default attribute values. By default, configure MAC and PHY 
+   * for 802.11a.
    */
   static WifiHelper Default (void);
 
@@ -156,6 +157,11 @@
   NetDeviceContainer Install (const WifiPhyHelper &phy,
                               const WifiMacHelper &mac, std::string nodeName) const;
 
+  /**
+   * \param standard the phy standard to configure during installation
+   *
+   * By default, all objects are configured for 802.11a
+   */
   void SetStandard (enum WifiPhyStandard standard);
 
   /**