Changes

• The default CSS style sheet has been cleaned up and simplified, thanks to the work done by Quinn Taylor.

New features

• Added new config options GENERATE_QHP which enables generating .qch (Qt compiled help) file via the Qt's qthelpgenerator tool (part of Qt 4.4+). This type of files can be read with Qt's Assisant to browse the documentation in a similar way as is possible with Microsoft's compiled HTML help (.chm). To further customize the output and run the help generator from within doxygen, the following options are available: QCH_FILE, QHP_NAMESPACE, QHP_VIRTUAL_FOLDER, QHG_LOCATION. Thanks to Sebastian Pipping for the patch.
  
• Add new option SYMBOL_CACHE_SIZE to allow a different trade off between doxygen's memory usage and the amount of disk accesses.
  
• id 532695: Added 3 new commands: \extends, \implements, and \memberof that allow object oriented constructs to be documented as such for languages that do not support it natively (e.g. C)
  
• Added better support for one line comments after VHDL types.
  
• Added new option LAYOUT_FILE which can be used to specify a layout template file that tells doxygen in which order to generate the output and which titles to use for headings and how the navigation index will look; Read this for more info. As a result the following options are now obsolete since they can now only be controlled via the layout file: DETAILS_AT_TOP, ALPHABETICAL_INDEX. The following options can also be set via the layout file, but for convenience and backward compatibility reasons they are still also part of the configuration file: SHOW_INCLUDE_FILES, SHOW_USED_FILES, CLASS_GRAPH, COLLABORATION_GRAPH, GROUP_GRAPHS, INCLUDE_GRAPH, INCLUDED_BY_GRAPH. Run doxygen with the -l option to generate the default layout file.
  
• Included update for the Macedonian, Catalan, Brazilian, and Serbian translation and also support for Serbian with Cyrilic characters.