-A number of `extras' are supplied with wxWindows, to complement
-the GUI functionality in the main class library. These are found
-below the utils directory and usually have their own source, library
-and documentation directories. For other user-contributed packages,
-see the directory ftp://www.remstar.com/pub/wxwin/contrib, which is
-more easily accessed via the Contributions page on the Web site.
-
-\section{wxHelp}\label{wxhelp}
-
-wxHelp is a stand-alone program, written using wxWindows,
-for displaying hypertext help. It is necessary since not all target
-systems (notably X) supply an adequate
-standard for on-line help. wxHelp is modelled on the MS Windows help
-system, with contents, search and browse buttons, but does not reformat
-text to suit the size of window, as WinHelp does, and its input files
-are uncompressed ASCII with some embedded font commands and an .xlp
-extension. Most wxWindows documentation (user manuals and class
-references) is supplied in wxHelp format, and also in Windows Help
-format. The wxWindows 2.0 project will presently use an HTML widget
-in a new and improved wxHelp implementation, under X.
-
-Note that an application can be programmed to use Windows Help under
-MS Windows, and wxHelp under X. An alternative help viewer under X is
-Mosaic, a World Wide Web viewer that uses HTML as its native hypertext
-format. However, this is not currently integrated with wxWindows
-applications.
-
-wxHelp works in two modes---edit and end-user. In edit mode, an ASCII
-file may be marked up with different fonts and colours, and divided into
-sections. In end-user mode, no editing is possible, and the user browses
-principally by clicking on highlighted blocks.
-
-When an application invokes wxHelp, subsequent sections, blocks or
-files may be viewed using the same instance of wxHelp since the two
-programs are linked using wxWindows interprocess communication
-facilities. When the application exits, that application's instance of
-wxHelp may be made to exit also. See the {\bf wxHelpControllerBase} entry in the
-reference section for how an application controls wxHelp.
-
-\section{Tex2RTF}\label{textortf}
-
-Supplied with wxWindows is a utility called Tex2RTF for converting\rtfsp
-\LaTeX\ manuals to the following formats:
-
-\begin{description}
-\item[wxHelp]
-wxWindows help system format (XLP).
-\item[Linear RTF]
-Rich Text Format suitable for importing into a word processor.
-\item[Windows Help RTF]
-Rich Text Format suitable for compiling into a WinHelp HLP file with the
-help compiler.
-\item[HTML]
-HTML is the native format for Mosaic, the main hypertext viewer for
-the World Wide Web. Since it is freely available it is a good candidate
-for being the wxWindows help system under X, as an alternative to wxHelp.
-\end{description}
-
-Tex2RTF is used for the wxWindows manuals and can be used independently
-by authors wishing to create on-line and printed manuals from the same\rtfsp
-\LaTeX\ source. Please see the separate documentation for Tex2RTF.
-
-\section{wxTreeLayout}
-
-This is a simple class library for drawing trees in a reasonably pretty
-fashion. It provides only minimal default drawing capabilities, since
-the algorithm is meant to be used for implementing custom tree-based
-tools.
-
-Directed graphs may also be drawn using this library, if cycles are
-removed before the nodes and arcs are passed to the algorithm.
-
-Tree displays are used in many applications: directory browsers,
-hypertext systems, class browsers, and decision trees are a few
-possibilities.
-
-See the separate manual and the directory utils/wxtree.