/******************************************************************************

 *

 * 

 *

 * Copyright (C) 1997-2015 by Dimitri van Heesch.

 *

 * Permission to use, copy, modify, and distribute this software and its

 * documentation under the terms of the GNU General Public License is hereby 

 * granted. No representations are made about the suitability of this software 

 * for any purpose. It is provided "as is" without express or implied warranty.

 * See the GNU General Public License for more details.

 *

 * Documents produced by Doxygen are derivative works derived from the

 * input used in their production; they are not affected by this license.

 *

 */

/*! \page features Features

\addindex features

Requires very little overhead from the writer of the documentation. 

    Plain text will do, Markdown is support, and for more fancy or 

    structured output HTML tags and/or some of doxygen's special commands 

    can be used.

Cross platform: works on Windows and many Unix flavors (including Linux and

    MacOSX).

Indexes, organizes and generates browsable and cross-referenced 

    output even from undocumented code.

Generates structured XML output for parsed sources, which can be 

    used by external tools.

Supports C/C++, Java, (Corba and Microsoft) Java, Python, VHDL, PHP

    IDL, C#, Fortran, TCL, Objective-C 2.0, and to some extent D sources.

Supports documentation of files, namespaces, packages, classes, 

    structs, unions, templates, variables, functions, typedefs, enums and 

    defines. 

JavaDoc (1.1), qdoc3 (partially), and ECMA-334 (C# spec.) compatible.

Comes with a GUI frontend (Doxywizard) to ease editing the options and 

    run doxygen. The GUI is available on Windows, Linux, and MacOSX.

Automatically generates class and collaboration diagrams in HTML (as clickable 

    image maps) and \LaTeX (as Encapsulated PostScript images).

Uses the `dot` tool of the Graphviz tool kit to generate

    include dependency graphs, collaboration diagrams, call graphs, directory structure

    graphs, and graphical class hierarchy graphs. 

Allows grouping of entities in modules and creating a hierarchy of modules.

Flexible comment placement: Allows you to put documentation in the 

    header file (before the 

    declaration of an entity), source file (before the definition of an entity) 

    or in a separate file.

Generates a list of all members of a class (including any inherited

    members) along with their protection level.

Outputs documentation in on-line format (XHTML and UNIX man page) and 

    off-line format (\LaTeX and RTF) simultaneously 

    (any of these can be disabled if desired). All formats are optimized for 

    ease of reading. 

    Furthermore, compressed HTML can be generated from HTML output using 

    Microsoft's HTML Help Workshop (Windows only) and PDF can be generated 

    from the \LaTeX output.

Support for various third party help formats including HTML Help,

    docsets, Qt-Help, and eclipse help.

Includes a full C preprocessor to allow proper parsing of conditional 

    code fragments and to allow expansion of all or part of macros definitions.

Automatically detects public, protected and private sections, as well as

    the Qt specific signal and slots sections. Extraction of private class 

    members is optional.

Automatically generates references to documented classes, files, namespaces

    and members. Documentation of global functions, global variables, 

    typedefs, defines and enumerations is also supported.

References to base/super classes and inherited/overridden members are 

    generated automatically.

Includes a fast, rank based search engine to search for strings or words 

    in the class and member documentation (PHP based).

Includes an Javascript based live search feature to search for symbols

    as you type (for small to medium sized projects).

You can type normal HTML tags in your documentation. Doxygen will convert

    them to their equivalent \LaTeX, RTF, and man-page 

    counterparts automatically.

Allows references to documentation generated for other (doxygen documented) 

    projects (or another part of the same project) in a location independent way.

Allows inclusion of source code examples that are automatically 

    cross-referenced with the documentation.

Inclusion of undocumented classes is also supported, allowing to quickly

    learn the structure and interfaces of a (large) piece of code without 

    looking into the implementation details.

Allows automatic cross-referencing of (documented) entities with their

    definition in the source code.

All source code fragments are syntax highlighted for ease of reading.

Allows inclusion of function/member/class definitions in the documentation.

All options are read from an easy to edit and (optionally) annotated 

    configuration file.

Documentation and search engine can be transferred to another 

    location or machine without regenerating the documentation.

Supports many different character encodings and uses UTF-8 internally and

    for the generated output.

Doxygen can generate a layout which you can use and edit to change the

    layout of each page.

There more than a 100 configurable options to fine-tune the output.

Can cope with large projects easily.

Although doxygen can now be used in any project written in a language that is 

supported by doxygen, initially it was specifically designed to be used for projects 

that make use of Qt Software's 

Qt toolkit. I have tried to 

make doxygen `Qt-compatible'. That is: Doxygen can read the documentation contained in 

the Qt source code and create a class browser that looks quite similar to the 

one that is generated by Qt Software. Doxygen understands the C++ extensions 

used by Qt such as signals and slots and many of the markup commands used in the Qt sources.

Doxygen can also automatically generate links to existing documentation

that was generated with doxygen or with Qt's non-public class browser 

generator. For a Qt based project this means that whenever you refer to 

members or classes belonging to the Qt toolkit, a link will be generated to 

the Qt documentation. This is done independent of where this documentation 

is located! 

\htmlonly

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 index.

\endhtmlonly

*/