+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxTextAttr}{wxtextattr}}{Attributes specifying text styling.}
+\twocolitem{\helpref{wxRichTextCtrl}{wxrichtextctrl}}{A rich text control.}
+\twocolitem{\helpref{wxRichTextBuffer}{wxrichtextbuffer}}{The content of a rich text control.}
+\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{wxRichTextStyleOrganiserDialog}{wxrichtextstyleorganiserdialog}}{A dialog that can be used for managing or browsing 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 Scintilla text editor classes}}
+
+wxWidgets also provides a wrapper around the Scintilla text editor control, which is
+a control for plain-text editing with support for highlighting, smart indentation, etc.
+
+\twocolwidtha{6cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{\helpref{wxStyledTextCtrl}{wxstyledtextctrl}}{A wxWidgets implementation of the Scintilla source code editing component.}
+\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{wxXmlAttribute}{wxxmlattribute}}{A class which represent an XML attribute}
+\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}