ns-3 documentation is maintained using Doxygen. Doxygen is typically used for API documentation, and organizes such documentation across different modules. This project uses Doxygen for building the definitive maintained API documentation. Additional ns-3 project documentation can be found at the project web site.
Building ns-3 Doxygen requires Doxygen version 1.8 at a minimum, but version 1.9 is recommended to minimize warnings.
Type "./ns3 docs doxygen" or "./ns3 docs 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.
The ns-3 library is split across many modules organized under the Modules tab.