I am interested in writing an "introduction" on the index.html page, rather than have blank space. Is this a feature supported by the Doxygen tool, or must I put together a hack?
This is answered by the first question in the Doxygen FAQ:
1. How to get information on the index page in HTML?
You should use the \mainpage command inside a comment block like this:
/*! \mainpage My Personal Index Page * * \section intro_sec Introduction * * This is the introduction. * * \section install_sec Installation * * \subsection step1 Step 1: Opening the box * * etc... */