The documentation can be generated using 'Doxygen' Version 1.7.2 or higher (http://www.doxygen.org). You also need the 'dot' tool provided by 'Graphviz' (http://www.graphviz.org).
First install both software packages as denoted on their web sites.
Then you can either generate the documentation using the graphical tool 'Doxywizard' or by running 'Doxygen' on the console:
Run doxywizard
and open the file 'Doxyfile'. Then open the 'Run' tab (below 'Step 2') and click on 'Run doxygen'. Now the documentation is generated.
doxygen
. Now you should have an 'html' folder in './doc'. Open './doc/html/index.html' to browse through the documentation.
Documentation generated by Doxygen