--- a/doc/main.h	Sat Nov 14 18:04:40 2009 +0100
+++ b/doc/main.h	Sat Nov 14 07:13:06 2009 -0800
@@ -26,8 +26,9 @@
  * ns-3 requires Doxygen version 1.5.4 or greater to fully build all items,
  * although earlier versions of Doxygen will mostly work.
  * 
- * Type "./waf doxygen" to build the documentation.  The doc/ directory contains
- * configuration for Doxygen (doxygen.conf and main.txt).  The Doxygen 
+ * Type "./waf --doxygen" or "./waf --doxygen-no-build" to build the 
+ *  documentation.  The doc/ directory contains
+ * configuration for Doxygen (doxygen.conf) and main.h.  The Doxygen 
  * build process puts html files into the doc/html/ directory, and latex 
  * filex into the doc/latex/ directory.
  * 
@@ -43,8 +44,14 @@
  *       to network simulations but shared by pretty much every model
  *       of a network component.
  *     - node: located in src/node. Defines the abstract interfaces which 
- *       must be implemented by every node and more specifically, by ipv4 nodes.       
+ *       must be implemented by every node and more specifically, by 
+ *       IPv4 and IPv6 nodes.       
  *     - devices: located in src/devices. Contains a set of MAC-level models
+ *     - InternetStack: located in src/internet-stack. Contains TCP/IP models.
+ *     - Applications: located in src/applications
+ *     - Routing:  located in src/routing; routing protocols.
+ *     - Mobility:  located in src/mobility; Mobility models for nodes
+ *     - Helper:  located in src/helper; Helper API for the simulator
  *
  * More detail can be found in the <b><a href="modules.html">Modules</a></b>
  * tab.