+{\large {\bf Threading classes}}
+
+\overview{Multithreading overview}{wxthreadoverview}
+
+wxWidgets provides a set of classes to make use of the native thread
+capabilities of the various platforms.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxThread}{wxthread}}{Thread class}
+\twocolitem{\helpref{wxThreadHelper}{wxthreadhelper}}{Manages background threads easily}
+\twocolitem{\helpref{wxMutex}{wxmutex}}{Mutex class}
+\twocolitem{\helpref{wxMutexLocker}{wxmutexlocker}}{Mutex locker utility class}
+\twocolitem{\helpref{wxCriticalSection}{wxcriticalsection}}{Critical section class}
+\twocolitem{\helpref{wxCriticalSectionLocker}{wxcriticalsectionlocker}}{Critical section locker utility class}
+\twocolitem{\helpref{wxCondition}{wxcondition}}{Condition class}
+\twocolitem{\helpref{wxSemaphore}{wxsemaphore}}{Semaphore class}
+\end{twocollist}
+
+{\large {\bf HTML classes}}
+
+wxWidgets provides a set of classes to display text in HTML format. These
+class include a help system based on the HTML widget.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxHtmlHelpController}{wxhtmlhelpcontroller}}{HTML help controller class}
+\twocolitem{\helpref{wxHtmlWindow}{wxhtmlwindow}}{HTML window class}
+\twocolitem{\helpref{wxHtmlEasyPrinting}{wxhtmleasyprinting}}{Simple class for printing HTML}
+\twocolitem{\helpref{wxHtmlPrintout}{wxhtmlprintout}}{Generic HTML wxPrintout class}
+\twocolitem{\helpref{wxHtmlParser}{wxhtmlparser}}{Generic HTML parser class}
+\twocolitem{\helpref{wxHtmlTagHandler}{wxhtmltaghandler}}{HTML tag handler, pluginable into wxHtmlParser}
+\twocolitem{\helpref{wxHtmlWinParser}{wxhtmlwinparser}}{HTML parser class for wxHtmlWindow}
+\twocolitem{\helpref{wxHtmlWinTagHandler}{wxhtmlwintaghandler}}{HTML tag handler, pluginable into wxHtmlWinParser}
+\end{twocollist}
+
+{\large {\bf Rich text classes}}
+
+wxWidgets provides a set of generic classes to edit and print simple rich text with character
+and paragraph formatting.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxRichTextCtrl}{wxrichtextctrl}}{A rich text control.}
+\twocolitem{\helpref{wxRichTextBuffer}{wxrichtextbuffer}}{The content of a rich text control.}
+\twocolitem{\helpref{wxRichTextAttr}{wxrichtextattr}}{Attributes specifying rich text styling.}
+\twocolitem{\helpref{wxRichTextCharacterStyleDefinition}{wxrichtextcharacterstyledefinition}}{Definition of character styling.}
+\twocolitem{\helpref{wxRichTextParagraphStyleDefinition}{wxrichtextparagraphstyledefinition}}{Definition of paragraph styling.}
+\twocolitem{\helpref{wxRichTextListStyleDefinition}{wxrichtextliststyledefinition}}{Definition of list styling.}
+\twocolitem{\helpref{wxRichTextStyleSheet}{wxrichtextstylesheet}}{A set of style definitions.}
+\twocolitem{\helpref{wxRichTextStyleComboCtrl}{wxrichtextstylecomboctrl}}{A drop-down control for applying styles.}
+\twocolitem{\helpref{wxRichTextStyleListBox}{wxrichtextstylelistbox}}{A listbox for applying styles.}
+\twocolitem{\helpref{wxRichTextEvent}{wxrichtextevent}}{A rich text event.}
+\twocolitem{\helpref{wxRichTextRange}{wxrichtextrange}}{Specification for ranges in a rich text control or buffer.}
+\twocolitem{\helpref{wxRichTextFileHandler}{wxrichtextfilehandler}}{File handler base class.}
+\twocolitem{\helpref{wxRichTextHTMLHandler}{wxrichtexthtmlhandler}}{A handler for converting rich text to HTML.}
+\twocolitem{\helpref{wxRichTextXMLHandler}{wxrichtextxmlhandler}}{A handler for loading and saving rich text XML.}
+\twocolitem{\helpref{wxRichTextFormattingDialog}{wxrichtextformattingdialog}}{A dialog for rich text formatting.}
+\twocolitem{\helpref{wxRichTextPrinting}{wxrichtextprinting}}{A class for easy printing of rich text buffers.}
+\twocolitem{\helpref{wxRichTextPrintout}{wxrichtextprintout}}{A class used by wxRichTextPrinting.}
+\twocolitem{\helpref{wxRichTextHeaderFooterData}{wxrichtextheaderfooterdata}}{Header and footer data specification.}
+\end{twocollist}
+
+{\large {\bf Virtual file system classes}}
+
+wxWidgets provides a set of classes that implement an extensible virtual file system,
+used internally by the HTML classes.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxFSFile}{wxfsfile}}{Represents a file in the virtual file system}
+\twocolitem{\helpref{wxFileSystem}{wxfilesystem}}{Main interface for the virtual file system}
+\twocolitem{\helpref{wxFileSystemHandler}{wxfilesystemhandler}}{Class used to announce file system type}
+\end{twocollist}
+
+{\large {\bf XML classes}}
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxXmlDocument}{wxxmldocument}}{A class to parse XML files.}
+\twocolitem{\helpref{wxXmlNode}{wxxmlnode}}{A class which represents XML nodes.}
+\twocolitem{\helpref{wxXmlProperty}{wxxmlproperty}}{A class which represents XML properties.}
+\end{twocollist}
+
+{\large {\bf XML-based resource system classes}}
+
+\overview{XML-based resource system (XRC) overview}{xrcoverview}
+
+Resources allow your application to create controls and other user interface elements
+from specifications stored in an XML format.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxXmlResource}{wxxmlresource}}{The main class for working with resources.}
+\twocolitem{\helpref{wxXmlResourceHandler}{wxxmlresourcehandler}}{The base class for XML resource handlers.}
+\end{twocollist}
+
+{\large {\bf Online help}}
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxHelpController}{wxhelpcontroller}}{Family of classes for controlling help windows}
+\twocolitem{\helpref{wxHtmlHelpController}{wxhtmlhelpcontroller}}{HTML help controller class}
+\twocolitem{\helpref{wxContextHelp}{wxcontexthelp}}{Class to put application into context-sensitive help mode}
+\twocolitem{\helpref{wxContextHelpButton}{wxcontexthelpbutton}}{Button class for putting application into context-sensitive help mode}
+\twocolitem{\helpref{wxHelpProvider}{wxhelpprovider}}{Abstract class for context-sensitive help provision}
+\twocolitem{\helpref{wxSimpleHelpProvider}{wxsimplehelpprovider}}{Class for simple context-sensitive help provision}
+\twocolitem{\helpref{wxHelpControllerHelpProvider}{wxhelpcontrollerhelpprovider}}{Class for context-sensitive help provision via a help controller}
+\twocolitem{\helpref{wxToolTip}{wxtooltip}}{Class implementing tooltips}
+\end{twocollist}
+
+{\large {\bf Database classes}}
+
+\overview{Database classes overview}{odbcoverview}
+
+wxWidgets provides a set of classes for accessing Microsoft's ODBC (Open Database Connectivity)
+product, donated by Remstar. This is known as wxODBC.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxDb}{wxdb}}{ODBC database connection}
+\twocolitem{\helpref{wxDbTable}{wxdbtable}}{Provides access to a database table}
+\twocolitem{\helpref{wxDbInf}{wxdbinf}}{}
+\twocolitem{\helpref{wxDbTableInf}{wxdbtableinf}}{}
+\twocolitem{\helpref{wxDbColDef}{wxdbcoldef}}{}
+\twocolitem{\helpref{wxDbColInf}{wxdbcolinf}}{}
+\twocolitem{\helpref{wxDbColDataPtr}{wxdbcoldataptr}}{}
+\twocolitem{\helpref{wxDbColFor}{wxdbcolfor}}{}
+\twocolitem{\helpref{wxDbConnectInf}{wxdbconnectinf}}{}
+\twocolitem{\helpref{wxDbIdxDef}{wxdbidxdef}}{}
+\end{twocollist}
+