ENH: Modify documentation for completeness.
Added documentation to several methods. Modified Doxygen configuration file to correctly process macros (tested using Doxygen 1.7.1). Correctly format documentation to 80 characters per line.
Added documentation to several methods. Modified Doxygen configuration file to correctly process macros (tested using Doxygen 1.7.1). Correctly format documentation to 80 characters per line.