// objective: test the \*only and \*endonly commands
// check: indexpage.xml
/** \mainpage
* Text.
* \htmlonly
* HTML
* \endhtmlonly
* \htmlonly[block]
* HTML with block
* \endhtmlonly
* \rtfonly
* RTF
* \endrtfonly
* \manonly
* Man
* \endmanonly
* \latexonly
* LaTeX
* \endlatexonly
* \xmlonly
* XML
* \endxmlonly
* \docbookonly
* DocBook
* \enddocbookonly
* More text.
*/