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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Free Documentation License
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of this
** file.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

/*!
    \page index.html
    \nextpage Introduction to QDoc

    \title Table of Contents

    \list
      \o \l {Introduction to QDoc}
      \o \l {Command Index}
      \o \l {Topic Commands}
      \o \l {Context Commands}
        \list
          \o \l {Document Navigation}
          \o \l {Reporting Status}
          \o \l {Thread Support}
          \o \l {Relating Things}
          \o \l {Grouping Things}
          \o \l {Naming Things}
        \endlist
      \o \l{Markup Commands}
        \list
          \o \l {Text Markup}
          \o \l {Document Structure}
          \o \l {Including Code Inline}
          \o \l {Including External Code}
          \o \l {Creating Links}
          \o \l {Including Images}
          \o \l {Tables and Lists}
          \o \l {Special Content}
          \o \l {Miscellaneous}
        \endlist
      \o \l {The QDoc Configuration File}
        \list
          \o \l {Generic Configuration Variables}
          \o \l {Creating Help Project Files}
          \o \l {C++ Specific Configuration Variables}
          \o \l {HTML Specific Configuration Variables}
          \o \l {Supporting Derived Projects}
          \o \l {Compatibility Issues}
          \o \l {qt.qdocconf}
          \o \l {minimum.qdocconf}
        \endlist
    \endlist

*/

/*!
    \page 01-qdoc-manual.html
    \contentspage Table of Contents
    \previouspage Table of Contents
    \nextpage Command Index

    \title Introduction to QDoc

    QDoc is a tool used by Qt Developers to generate documentation for
    software projects. It works by extracting \e {qdoc comments} from
    project source files and then formatting these comments as HTML
    pages or DITA XML documents, etc. QDoc finds qdoc comments in \c
    {.cpp} files and in \c {.qdoc} files. QDoc does not look for qdoc
    comments in \c {.h} files. A qdoc comment always begins with an
    exclamation mark \bold{!} e.g.:

    \code 
        / *! 
            \class QObject
            \brief The QObject class is the base class of all Qt objects.

            \ingroup objectmodel

            \reentrant

            QObject is the heart of the Qt \l{Object Model}. The
            central feature in this model is a very powerful mechanism
            for seamless object communication called \l{signals and
            slots}. You can connect a signal to a slot with connect()
            and destroy the connection with disconnect(). To avoid
            never ending notification loops you can temporarily block
            signals with blockSignals(). The protected functions
            connectNotify() and disconnectNotify() make it possible to
            track connections.

            QObjects organize themselves in \l {Object Trees &
            Ownership} {object trees}. When you create a QObject with
            another object as parent, the object will automatically
            add itself to the parent's children() list. The parent
            takes ownership of the object; i.e., it will automatically
            delete its children in its destructor. You can look for an
            object by name and optionally type using findChild() or
            findChildren().

            Every object has an objectName() and its class name can be
            found via the corresponding metaObject() (see
            QMetaObject::className()).  You can determine whether the
            object's class inherits another class in the QObject
            inheritance hierarchy by using the inherits() function.

	    ....
	* /
    \endcode

    From the qdoc comment above, QDoc generates the now famous HTML
    page \l {http://doc.trolltech.com/4.7/qobject.html#details}
    {QObject Class Reference}.
    
    This manual explains how to use the QDoc commands in qdoc comments
    to embed good documentation in your source files. It also explains
    how to make a \l {The QDoc Configuration File} {QDoc configuration
    file}, which you will pass to QDoc on the command line.

    \section1 Running QDoc

    The current name of the QDoc program is \c {qdoc3}. To run qdoc3
    from the command line, give it the name of a configuration file:

    \quotation
        \c {$ ../../bin/qdoc3 ./config.qdocconf}
    \endquotation

    QDoc recognizes the \c {.qdocconf} suffix as a \l{The QDoc
    Configuration File} {QDoc configuration file}. The configuration
    file is where you tell QDoc where to find the project source
    files, header files, and \c {.qdoc} files. It is also where you
    tell QDoc what kind of output to generate (HTML, DITA XML,...),
    and where to put the generated documentation. The configuration
    file also contains other information for QDoc.

    See \l{The QDoc Configuration File} for a instructions on how to
    build a Qdoc configuration file.

    \section1 How QDoc Works

    QDoc begins by reading the configuarion file you specified on the
    command line. It stores all the variables from the configuration
    file for later use. One of the first variables it uses is \c
    {outputformats}. This variable tells QDoc which output generators
    it will run. The default value is \e {HTML}, so if you don't set
    \c {outputformats} in your configuration file, QDoc will generate
    HTML output. That's usually what you will want anyway, but you can
    also specify \e {DITAXML} to get DITA XML output instead.

    Next, QDoc uses the values of the \l
    {22-qdoc-configuration-generalvariables.html#headerdirs-variable}
    {headerdirs} variable and/or the \l
    {22-qdoc-configuration-generalvariables.html#headers-variable}
    {headers} variable to find and parse all the header files for your
    project. QDoc does \e not scan header files for qdoc comments. It
    parses the header files to build a master tree of all the items
    that should be documented (i.e. the items that QDoc should find 
    qdoc comments for).

    After parsing all the header files and building the master tree of
    items to be documented, QDoc uses the value of the \l
    {22-qdoc-configuration-generalvariables.html#sourcedirs-variable}
    {sourcedirs} variable and/or the value of the \l
    {22-qdoc-configuration-generalvariables.html#sources-variable}
    {sources} variable to find and parse all the \c {.cpp} and \c
    {.qdoc} files for your project. These are the files QDoc scans for
    \e {qdoc comments}. Remember that a qdoc comment begins with 
    an exclamation mark, i.e. \bold {/*!} .

    For each qdoc comment it finds, it searches the master tree for
    the item where the documentation belongs. The it interprets the
    qdoc commands in the comment and stores the interpreted commands
    and the comment text in the tree node for the item. 

    Finally, QDoc traverses the master tree. For each node, if the
    node has stored documentation, QDoc calls the output generator
    specified by the \c {outputformats} variable to format and write
    the documentation in the directory specified in the configuration
    file in the \l
    {22-qdoc-configuration-generalvariables.html#outputdir-variable}
    {outputdir} variable.

    \section1 Command Types

    QDoc interprets three types of commands: 

    \list
    \o \l {Topic Commands} 
    \o \l {Context Commands}
    \o \l {Markup Commands}
    \endlist

    Topic commands identify the elememt you are documenting, e.g. a C++
    class, function, or type, an example, or an extra page of text
    that doesn't map to an underlying C++ elememnt.

    Context commands tell QDoc how the element being documented
    relates to other documented elememnts, e.g. next and previous page
    links or inclusion in page groups or library modules. Context
    commands can also provide information about the documented element
    that QDoc can't get from the source files, e.g. whether the
    element is thread-safe, an overloaded or reimplemented function,
    or that it has been deprecated.

    Markup commands tell QDoc how text and image elements in the
    document should be rendered, or about the document's outline
    structure.  
*/

/*!
    \page 03-qdoc-commands-markup.html
    \contentspage Table of Contents
    \previouspage Naming Things
    \nextpage Text Markup

    \title Markup Commands

    The markup commands indicate the generated documentation's visual
    appearance and logical structure.

    \list
    \o \l {04-qdoc-commands-textmarkup.html#a-command} {\\a}
    \o \l {11-qdoc-commands-specialcontent.html#abstract-command} {\\abstract}
    \o \l {06-qdoc-commands-includecodeinline.html#badcode-command} {\\badcode}
    \o \l {04-qdoc-commands-textmarkup.html#bold-command} {\\bold}
    \o \l {11-qdoc-commands-specialcontent.html#brief-command} {\\brief}
    \o \l {04-qdoc-commands-textmarkup.html#c-command} {\\c}
    \o \l {09-qdoc-commands-includingimages.html#caption-command} {\\caption}
    \o \l {05-qdoc-commands-documentstructure.html#chapter-command} {\\chapter}
    \o \l {06-qdoc-commands-includecodeinline.html#code-command} {\\code}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#codeline-command} {\\codeline}
    \o \l {04-qdoc-commands-textmarkup.html#div-command} {\\div} \span {class="newStuff"} {(new)}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#dots-command} {\\dots}
    \o \l {12-0-qdoc-commands-miscellaneous.html#else-command} {\\else}
    \o \l {12-0-qdoc-commands-miscellaneous.html#endif-command} {\\endif}
    \o \l {12-0-qdoc-commands-miscellaneous.html#expire-command} {\\expire}
    \o \l {11-qdoc-commands-specialcontent.html#footnote-command} {\\footnote}
    \o \l {12-0-qdoc-commands-miscellaneous.html#generatelist-command} {\\generatelist}
    \o \l {10-qdoc-commands-tablesandlists.html#header-command} {\\header}
    \o \l {04-qdoc-commands-textmarkup.html#i-command} {\\i}
    \o \l {12-0-qdoc-commands-miscellaneous.html#if-command} {\\if}
    \o \l {09-qdoc-commands-includingimages.html#image-command} {\\image}
    \o \l {12-0-qdoc-commands-miscellaneous.html#include-command} {\\include}
    \o \l {12-0-qdoc-commands-miscellaneous.html#include-command} {\\input}
    \o \l {09-qdoc-commands-includingimages.html#inlineimage-command} {\\inlineimage}
    \o \l {08-qdoc-commands-creatinglinks.html#keyword-command} {\\keyword}
    \o \l {08-qdoc-commands-creatinglinks.html#l-command} {\\l}
    \o \l {11-qdoc-commands-specialcontent.html#legalese-command} {\\legalese}
    \o \l {10-qdoc-commands-tablesandlists.html#list-command} {\\list}
    \o \l {12-0-qdoc-commands-miscellaneous.html#meta-command} {\\meta}
    \o \l {06-qdoc-commands-includecodeinline.html#newcode-command} {\\newcode}
    \o \l {10-qdoc-commands-tablesandlists.html#o-command} {\\o}
    \o \l {06-qdoc-commands-includecodeinline.html#oldcode-command} {\\oldcode}
    \o \l {12-0-qdoc-commands-miscellaneous.html#omit-command} {\\omit}
    \o \l {05-qdoc-commands-documentstructure.html#part-command} {\\part}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printline-command} {\\printline}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printto-command} {\\printto}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printuntil-command} {\\printuntil}
    \o \l {11-qdoc-commands-specialcontent.html#quotation-command} {\\quotation}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#quotefile-command} {\\quotefile}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#quotefromfile-command} {\\quotefromfile}
    \o \l {12-0-qdoc-commands-miscellaneous.html#raw-command} {\\raw} \span {class="newStuff"} {(deprecated)}
    \o \l {10-qdoc-commands-tablesandlists.html#row-command} {\\row}
    \o \l {08-qdoc-commands-creatinglinks.html#sa-command} {\\sa}
    \o \l {05-qdoc-commands-documentstructure.html#sectionOne-command} {\\section1}
    \o \l {05-qdoc-commands-documentstructure.html#sectionTwo-command} {\\section2}
    \o \l {05-qdoc-commands-documentstructure.html#sectionThree-command} {\\section3}
    \o \l {05-qdoc-commands-documentstructure.html#sectionFour-command} {\\section4}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipline-command} {\\skipline}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipto-command} {\\skipto}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipuntil-command} {\\skipuntil}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#snippet-command} {\\snippet}
    \o \l {04-qdoc-commands-textmarkup.html#span-command} {\\span} \span {class="newStuff"} {(new)}
    \o \l {04-qdoc-commands-textmarkup.html#sub-command} {\\sub}
    \o \l {04-qdoc-commands-textmarkup.html#sup-command} {\\sup}
    \o \l {10-qdoc-commands-tablesandlists.html#table-command} {\\table}
    \o \l {11-qdoc-commands-specialcontent.html#tableofcontents-command} {\\tableofcontents}
    \o \l {08-qdoc-commands-creatinglinks.html#target-command} {\\target}
    \o \l {04-qdoc-commands-textmarkup.html#tt-command} {\\tt}
    \o \l {04-qdoc-commands-textmarkup.html#underline-command} {\\underline}
    \o \l {12-0-qdoc-commands-miscellaneous.html#raw-command} {\\unicode}
    \o \l {11-qdoc-commands-specialcontent.html#warning-command} {\\warning}
    \o \l {04-qdoc-commands-textmarkup.html#backslash-command} {\\\\}
    \endlist
*/

/*!
    \page 04-qdoc-commands-textmarkup.html
    \contentspage Table of Contents
    \previouspage Markup Commands
    \nextpage Document Structure

    \title Text Markup

    The text formatting commands indicate how text is to be rendered.

    \target a-command
    \section1 \\a (parameter marker)

    The \\a command tells QDoc the next word is a formal parameter name.

    A warning is emitted when a formal parameter is not documented or
    is misspelled, so when you document a function you should mention
    each formal parameter by name in the function description,
    preceded by the \\a command. The parameter name is then rendered
    in italics.

    \code
      / *!
         Constructs a line edit containing the text
         \a contents. The \a parent parameter is sent 
         to the QWidget constructor.
      * /

      QLineEdit::QLineEdit(const QString &contents, QWidget *parent) :QWidget(parent)
      {
         ...
      }

    \endcode

    QDoc renders this as:

    \quotation
        \bold {QLineEdit::QLineEdit ( const QString &
        contents, QWidget *parent )}

        Constructs a line edit containing the text \a contents.
        The \a parent parameter is sent to the QWidget constructor.
    \endquotation

    You can enclose the formal parameter name in curly brackets, if
    you want to, but it isn't necessary.

    \target c-command
    \section1 \\c (code font)
    
    The \\c command is used for rendering variable names, user-defined
    class names, and C++ keywords (e.g. \c int and \c for) in the code
    font.

    The command renders its argument using a typewriter font. For
    example:

    \code
      / *!
        The \c AnalogClock class provides a clock widget with hour
        and minute hands that is automatically updated every
        few seconds.
      * /
    \endcode

    QDoc renders this as:

    \quotation
        The \c AnalogClock class provides a clock widget with hour
        and minute hands that is automatically updated every
        few seconds.
    \endquotation

    If the text to be rendered in the code font contains spaces, enclose the
    entire text in curly brackets.

    \code
      \c {QLineEdit::QLineEdit(const QString &contents, QWidget *parent) :QWidget(parent)}
    \endcode

    QDoc renders this as:

    \quotation
      \c {QLineEdit::QLineEdit(const QString &contents, QWidget *parent) :QWidget(parent)}
    \endquotation

    The \\c command accepts the special character \c \ within its
    argument, i.e. it renders it as a normal character. So if you want
    to use nested commands, you must use the \l {tt-command} {teletype
    (\\tt)} command instead.

    See also \l {tt-command} {\\tt} and \l {code-command} {\\code}.
 
    \target div-command
    \section1 \\div \span {class="newStuff"} {(new)}  
 
    The \\div and \\enddiv commands delimit a large or small block of
    text (which may include other QDoc commands) to which special
    formatting attributes should be applied.

    An argument must be provided in curly braces, as in the qdoc
    comment shown below. The argument is not interpreted but is used
    as attribute(s) of the tag that is ultimately output by qdoc.

    For example, we might want to render an inline image so that it
    floats to the right of the current block of text:

    \code
      / *!
         \div {class="float-right"}
           \inlineimage qml-column.png
         \enddiv

      * /
    \endcode

    If qdoc is generating HTML, it will translate these commands to:

    \code
      <div class="float-right"><p><img src="images/qml-column.png" /></p></div>
    \endcode

    For HTML, the attribute value \e {float-right} then will refer to
    a clause in the style.css file. which in this case could be:

    \code	   
       div.float-right
       {
          float: right; margin-left: 2em
       }
    \endcode

    If qdoc is generating DITA XML, it will translate the commands to:

    \code
        <sectiondiv outputclass="float-right">
            <p>
                <fig>
                    <image href="images/qml-column.png" placement="inline"/>
                </fig>
            </p>
        </sectiondiv>
    \endcode

    Your DITA XML publishing program must then recognize the \e
    {outputclass} attribute value.

    \note The \bold {\\div} command can be nested. 
	   
    Below is an example taken from the index.qdoc file used to
    generate index.html for Qt 4.7:

    \code
        \div {class="indexbox guide"}
            \div {class="heading"}
                Qt Developer Guide 
	    \enddiv
            \div {class="indexboxcont indexboxbar"}
                \div {class="section indexIcon"} \emptyspan
                \enddiv
                \div {class="section"}
                    Qt is a cross-platform application and UI
                    framework. Using Qt, you can write web-enabled
                    applications once and deploy them across desktop,
                    mobile and embedded operating systems without
                    rewriting the source code.
                \enddiv
                \div {class="section sectionlist"}
                    \list
                       \o \l{Getting Started Guides} {Getting started}
                       \o \l{Installation} {Installation}
                       \o \l{how-to-learn-qt.html} {How to learn Qt}
                       \o \l{tutorials.html} {Tutorials}
                       \o \l{Qt Examples} {Examples}
                       \o \l{qt4-7-intro.html} {What's new in Qt 4.7}
                    \endlist
                \enddiv
            \enddiv
        \enddiv
    \endcode

    When all the class attribute values are defined as they are in the
    style.css file that is used for rendering the Qt 4.7 documentation, 
    the above example is rendered as:

          \div {class="indexbox guide"}
            \div {class="heading"}
              Qt Developer Guide 
	    \enddiv
            \div {class="indexboxcont indexboxbar"}
              \div {class="section indexIcon"} \emptyspan
              \enddiv
              \div {class="section"}
                Qt is a cross-platform application and UI
                framework. Using Qt, you can write web-enabled
                applications once and deploy them across desktop,
                mobile and embedded operating systems without
                rewriting the source code.
              \enddiv
              \div {class="section sectionlist"}
                \list
                  \o \l{Getting Started Guides} {Getting started}
                  \o \l{Installation} {Installation}
                  \o \l{how-to-learn-qt.html} {How to learn Qt}
                  \o \l{tutorials.html} {Tutorials}
                  \o \l{Qt Examples} {Examples}
                  \o \l{qt4-7-intro.html} {What's new in Qt 4.7}
                \endlist
             \enddiv
            \enddiv
          \enddiv

    When generating DITA XML, qdoc outputs the nested \e {div} commands as:

    \code
      <sectiondiv outputclass="indexbox guide">
          <sectiondiv outputclass="heading">
              <p>Qt Developer Guide</p>
          </sectiondiv>
          <sectiondiv outputclass="indexboxcont indexboxbar">
              <sectiondiv outputclass="section indexIcon"/>
              <sectiondiv outputclass="section">
                  <p>Qt is a cross-platform application and UI
                     framework. Using Qt, you can write
                     web-enabled applications once and deploy
                     them across desktop, mobile and embedded
                     operating systems without rewriting the
                     source code.
                  </p>
              </sectiondiv>
              <sectiondiv outputclass="section sectionlist">
                  <ul>
                      <li>
                          <xref href="gettingstarted.xml#id-606ee7a8-219b-47b7-8f94-91bc8c76e54c">Getting started</xref>
                      </li>
                      <li>
                          <xref href="installation.xml#id-075c20e2-aa1e-4f88-a316-a46517e50443">Installation</xref>
                      </li>
                      <li>
                          <xref href="how-to-learn-qt.xml#id-49f509b5-52f9-4cd9-9921-74217b9a5182">How to learn Qt</xref>
                      </li>
                      <li>
                          <xref href="tutorials.xml#id-a737f955-a904-455f-b4aa-0dc69ed5a64f">Tutorials</xref>
                      </li>
                      <li>
                          <xref href="all-examples.xml#id-98d95159-d65b-4706-b08f-13d80080448d">Examples</xref>
                      </li>
                      <li>
                          <xref href="qt4-7-intro.xml#id-519ae0e3-4242-4c2a-b2be-e05d1e95f177">What's new in Qt 4.7</xref>
                      </li>
                  </ul>
              </sectiondiv>
          </sectiondiv>
      </sectiondiv>
    \endcode

    Your DITA XML publishing program must recognize the values of the
    \e {outputclass} attribute.
           
    See also \l {span-command} {\\span}.

    \target span -command
    \section1 \\span \span {class="newStuff"} {(new)} 
    
    The \\span command is for applying special formatting
    attributes to a small block of text.

    Two arguments must be provided, each argument in curly braces, as
    shown in the qdoc comment below. The first argument is not
    interpreted but is used as the formatting attribute(s) of the tag
    that is ultimately output by qdoc. The second argument is the text
    to be rendered with the special formatting attributes.
	   
    For example, we might want to render the first word of each
    element in a numeric list in blue.

    \code
        / *!
            Global variables with complex types:
	    \list 1
                \o \span {class="variableName"} {mutableComplex1} in globals.cpp at line 14
                \o \span {class="variableName"} {mutableComplex2} in globals.cpp at line 15
                \o \span {class="variableName"} {constComplex1} in globals.cpp at line 16
                \o \span {class="variableName"} {constComplex2} in globals.cpp at line 17
            \endlist
        * /
    \endcode

    Class \e {variableName} refers to a clause in your style.css. 

    \code
        .variableName
        {
            font-family: courier;
	    color: blue
        }
    \endcode

    Using the \e {variableName} clause shown above, the example is rendered as:

    Global variables with complex types:
    \list 1
        \o \span {class="variableName"} {mutableComplex1} in globals.cpp at line 14
        \o \span {class="variableName"} {mutableComplex2} in globals.cpp at line 15
        \o \span {class="variableName"} {constComplex1} in globals.cpp at line 16
        \o \span {class="variableName"} {constComplex2} in globals.cpp at line 17
    \endlist

    \note The \bold span command does not cause a new paragraph to be
    started.

    See also \l {div-command} {\\div}.
           
    \target tt-command
    \section1 \\tt (teletype font)

    The \\tt command renders its argument in a monospace font. This
    command behaves just like the \l {c-command} {\\c} command, except
    that \\tt allows you to nest QDoc commands within the argument
    (e.g. \l {i-command} {\\i}, \l {bold-command} {\\bold} and \l
    {underline-command} {\\underline}).

    \code
       / *!
           After \c setupUi() populates the main container with
           child widgets it scans the main container's list of
           slots for names with the form
           \tt{on_\e{objectName}_\e{signalName}().}
       * /
    \endcode

    QDoc renders this as:

    \quotation
        After \c setupUi() populates the main container with
        child widgets it scans the main container's list of
        slots for names with the form
        \tt{on_\e{objectName}_\e{signalName}().}
    \endquotation

    If the text to be rendered in the code font contains spaces, enclose the
    entire text in curly brackets.

    \code
      \tt {QLineEdit::QLineEdit(const QString &contents, QWidget *parent) :QWidget(parent)}
    \endcode

    QDoc renders this as:

    \quotation
      \tt {QLineEdit::QLineEdit(const QString &contents, QWidget *parent) :QWidget(parent)}
    \endquotation

    See also \l {c-command} {\\c}.

    \target bold-command
    \section1 \\bold 

    The \\bold command renders its argument in bold font.

    \code
    / *!
        This is regular text; \bold {this text is
        rendered using the \\bold command}.
    * /
    \endcode

    QDoc renders this as:

    \quotation
    This is regular text; \bold {this text is rendered using
    the \\bold command}.
    \endquotation

    \target i-command
    \section1 \\i (italics)

    The \\i command renders its argument in italics.

    \warning If \\i doesn't work and you get some strange error
    meesages from qdoc3 about using \\o outside of tables and lists,
    use \bold{\\e} for italics instead of \\i. For more information,
    see the relevant explanation in the section on \l
    {26-qdoc-commands-compatibility.html#i-versus-e} {compatibility
    issues}.

    If the argument contains spaces or other punctuation, enclose the
    argument in curly brackets.

    \code
    / *!
        Here, we render \i {a few words} in italic.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        Here, we render \e {a few words} in italic.
    \endquotation

    If you want to use other QDoc commands within an argument that
    contains spaces, you always need to enclose the argument with
    braces. But QDoc is smart enough to count parentheses [3], so you
    don't need braces in cases like this:

    \code
    / *!
        An argument can sometimes contain whitespaces,
        for example: \i QPushButton(tr("A Brand New Button"))
    * /
    \endcode

    QDoc renders this as:

    \quotation
       An argument can sometimes contain whitespaces,
       for example: \e QPushButton(tr("A Brand New Button"))
    \endquotation

    Finally, trailing punctuation is not included in an argument [4],
    nor is 's [5]

    \raw HTML
        <table align="center" cellpadding="2"
           cellspacing="1" border="0">
        <tr valign="top" bgcolor="#a2c511">
            <th></th>
            <th>QDoc Syntax</th>
            <th>Generated Documentation</th>
        </tr>

        <tr valign="top" bgcolor="#d0d0d0">
           <td>1</td>
            <td>A variation of a command button is a \e menu
                button.</td>
            <td>A variation of a command button is a <i>menu</i>
                button.</td>
        </tr>

        <tr valign="top" bgcolor="#c0c0c0">
            <td>2</td>
            <td>The QPushButton widget provides a
                \e {command button}.</td>
            <td>The QPushButton widget provides a
                <i>command button</i>.</td>
        </tr>

        <tr valign="top" bgcolor="#d0d0d0">
            <td>3</td>
            <td>Another class of buttons are option buttons
                \e (see QRadioButton).</td>
            <td>Another class of buttons are option buttons
                <i> (see QRadioButton)</i>.</td>
        </tr>

        <tr valign="top" bgcolor="#c0c0c0">
            <td>4</td>
            <td>A push button emits the signal \e clicked().</td>
            <td>A push button emits the signal <i>clicked</i>().</td>
        </tr>

        <tr valign="top" bgcolor="#d0d0d0">
            <td>5</td>
            <td>The \e QPushButton's checked property is
                false by default.</td>
            <td>The <i>QPushButton</i>'s checked property is
                false by default.</td>
        </tr>

        </table>
    \endraw

    \target sub-command
    \section1 \\sub 

    The \\sub command renders its argument lower than the baseline of
    the regular text, using a smaller font.

    \code
    / *!
        Definition (Range): Consider the sequence
        {x\sub n}\sub {n > 1} . The set

        {x\sub 2, x\sub 3, x\sub 4, ...} = {x\sub n ; n = 2, 3, 4, ...}

        is called the range of the sequence.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        Definition (Range): Consider the sequence
        {x\sub n}\sub {n > 1} . The set

        {x\sub 2, x\sub 3, x\sub 4, ...} = {x\sub n ; n = 2, 3, 4, ...}

        is called the range of the sequence.
    \endquotation

    If the argument contains spaces or other punctuation, enclose the
    argument in curly brackets.

    \target sup-command
    \section1 \\sup 

    The \\sup command renders its argument higher than
    the baseline of the regular text, using a smaller font.

    \code
    / *!
        The series

        1 + a + a\sup 2 + a\sup 3 + a\sup 4 + ...

        is called the \i {geometric series}.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        The series

        1 + a + a\sup 2 + a\sup 3 + a\sup 4 + ...

        is called the \e {geometric series}.
    \endquotation

    If the argument contains spaces or other punctuation, enclose the
    argument in curly brackets.

    \target underline-command
    \section1 \\underline

    The \\underline command renders its argument underlined.

    \code
    / *!
        The \underline {F}ile menu gives the users the possibility
        to open, and edit, an existing file, save a new or modified
        file, and exit the application.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        The \underline {F}ile menu gives the users the possibility
        to open, and edit, an existing file, save a new or modified
        file, and exit the application.
    \endquotation

    If the argument contains spaces or other punctuation, enclose the
    argument in curly brackets.

    \target backslash-command
    \section1 \\\\ (double backslash) 

    The \\\\ command expands to a single backslash.

    QDoc commands always start with a backslash alone. To display an
    actual backslash in the text you need to type two of the kind. If
    you want to display two backslashes, you need to type four, and so
    forth.

    \code
    / *!
        The \\\\ command is useful if you want a
        backslash to appear verbatim, for example,
        writing C:\\windows\\home\\.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        The \\\\ command is useful if you want a
        backslash to appear verbatim, for example,
        writing C:\\windows\\home\\.
    \endquotation

    However, if you want your text to appear in a typewriter font as
    well, you can use the \l {c-command} {\\c} command instead, which
    accepts and renders the backslash as any other character. For
    example:

    \code
    / *!
        The \\c command is useful if you want a
        backslash to appear verbatim, and the word
        that contains it written in a typewriter font,
        like this: \c {C:\windows\home\}.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        The \\c command is useful if you want a
        backslash to appear verbatim, and the word
        that contains it written in a typewriter font,
        like this: \c {C:\windows\home\}.
    \endquotation

*/

/*!
    \page 05-qdoc-commands-documentstructure.html
    \previouspage Text Markup
    \contentspage Table of Contents
    \nextpage Including Code Inline

    \title Document Structure

    The document structuring commands are for dividing your document
    into sections. QDoc supports six kinds of sections: \c \part, \c
    \chapter, \c \section1, \c \section2, \c \section3 and \c
    \section4. The \c \section1..4 commands are the most useful. The
    correspond to the traditional section, subsection, etc used in
    outlining.

    \target part-command
    \section1 \\part 

    The \\part command is intended for use in a large document, like a
    book.

    In general a document structuring command considers everything
    that follows it until the first line break as its argument. The
    argument is rendered as the unit's title. If the title needs to be
    spanned over several lines, make sure that each line (except the
    last one) is ended with a backslash.

    In total, there are six levels of sections in QDoc: \c \part, \c
    \chapter, \c \section1, \c \section2, \c \section3 and \c
    \section4. \c \section1 to \c \section4 correspond to the
    traditional section, subsection, subsubsection and
    subsubsubsection.

    There is a strict ordering of the section units:

           \code
           part
              |
              chapter
                    |
                    section1
                           |
                           section2
                                  |
                                  section3
                                         |
                                         section4
           \endcode

    For example, a \c section1 unit can only appear as the top level
    section or inside a \c chapter unit. Skipping a section unit, for
    example from \c part to \c section1, is not allowed.

    You can \e begin with either of the three: \c part, \c chapter or
    \c section1.


           \code
           / *!
               \part Basic Qt

               This is the first part.


                   \chapter Getting Started

                   This is the first part's first chapter.


                       \section1 Hello Qt

                       This is the first chapter's first section.


                       \section1 Making Connections

                       This is the first chapter's second section.


                       \section1 Using the Reference Documentation

                       This is the first chapter's third section.


                   \chapter Creating Dialogs

                   This is the first part's second chapter.


                       \section1 Subclassing QDialog

                       This is the second chapter's first section.

                       ...


               \part Intermediate Qt

               This is the second part.


                   \chapter Layout Management

                   This is the second part's first chapter.


                       \section1 Basic Layouts

                       This is the first chapter's first section.

               ...
           * /
           \endcode

    QDoc renders this as:

           \quotation
           \raw HTML
               <a name="Basic Qt">
               <h1>Basic Qt</h1>
               </a>
               <p>This is the first part.</p>

                   <a name="Getting started">
                   <h2>Getting Started</h2>
                   </a>
                   This is the first part's first chapter.</p>

                       <a name="Hello Qt">
                       <h3>Hello Qt</h3>
                       </a>
                       <p>This is the first chapter's first section.</p>

                       <a name="Making Connections">
                       <h3>Making Connections</h3>
                       </a>
                       <p>This is the first chapter's second section.</p>

                       <a name="Using the Reference Documentation">
                       <h3>Using the Reference Documentation</h3>
                       </a>
                       <p>This is the first chapter's third section.</p>

                   <a name="Creating Dialogs">
                   <h2>Creating Dialogs</h2>
                   </a>
                   <p>This is the first part's second chapter.</p>

                       <a name="Subclassing QDialog">
                       <h3>Subclassing QDialog</h3>
                       </a>
                       <p>This is the second chapter's first section.</p>

                       ...

               <a name="Intermediate Qt">
               <h1>Intermediate Qt</h1>
               </a>
               <p>This is the second part.</p>

                   <a name="Layout Management">
                   <h2>Layout Management</h2>
                   </a>
                   <p>This is the second part's first chapter.</p>

                       <a name="Basic Layouts">
                       <h3>Basic Layouts</h3>
                       </a>
                       <p>This is the first chapter's first section.</p>

               ...

           \endraw
           \endquotation

    Each section is a logical unit in the document. The section
    heading appears in the automatically generated table of contents
    that normally appears in the upper righthand corner of the page.

    \target chapter-command	
    \section1 \\chapter 
    
    The \\chapter command is intended for use in
    larger documents, and divides the document into chapters.

    See \l{part} {\\part} for an explanation of the various
    section units, command argument and rendering.

    \target sectionOne-command
    \section1 \\section1 

    The \\section1 command starts a new section.

    See \l{part} {\\part} for an explanation of the various
    section units, command argument and rendering.

    \target sectionTwo-command
    \section1 \\section2 

    The \\section2 command starts a new section.

    See \l{part} {\\part} for an explanation of the various
    section units, command argument and rendering.

    \target sectionThree-command
    \section1 \\section3 

    The \\section3 command starts a new section.

    See \l{part} {\\part} for an explanation of the various
    section units, command argument and rendering.

    \target sectionFour-command
    \section1 \\section4 

    The \\section4 command starts a new section.

    See \l{part} {\\part} for an explanation of the various
    section units, command argument and rendering.

*/

/*!
    \page 06-qdoc-commands-includecodeinline.html
    \previouspage Document Structure
    \contentspage Table of Contents
    \nextpage Including External Code

    \title Including Code Inline

    The following commands are used to render source code without
    formatting. The source code begins on a new line, rendered in the
    code.

    \bold{Note:} Although all these commands are for rendering C++
    code, the
    \l{07-0-qdoc-commands-includingexternalcode.html#snippet-command}
    {\\snippet} and
    \l{07-0-qdoc-commands-includingexternalcode.html#codeline-command}
    {\\codeline} commands are preferred over the others. These
    commands allow equivalent code snippets for other Qt language
    bindings to be substituted for the C++ snippets in the
    documentation.

    \target code-command
    \section1 \\code 

    The \\code and \\endcode commands enclose a snippet of source code.

    \note The \l {c-command} {\\c} command can be used for short code
    fragments within a sentence. The \\code command is for longer code
    snippets. It renders the code verbatim in a separate paragraph in
    the code font.

    When processing any of the \\code, \l {badcode-command}
    {\\badcode}, \l {newcode-command} {\\newcode} or \l
    {oldcode-command} {\\oldcode} commands, QDoc removes all
    indentation that is common for the verbatim code blocks within a
    \c{/}\c{*!} ...  \c{*}\c{/} comment before it adds the standard
    indentation. For that reason the recommended style is to use 8
    spaces for the verbatim code contained within these commands 

    \note This doesn't apply to externally quoted code using the \l
    {quotefromfile-command} {\\quotefromfile} or \l
    {quotefile-command} {\\quotefile} command.

           \code
           / *!
               \code
                   #include <QApplication>
                   #include <QPushButton>

                   int main(int argc, char *argv[])
                   {
                       ...
                   }
               \ endcode
           * /
           \endcode

           QDoc renders this as:

           \code
               #include <QApplication>
               #include <QPushButton>

               int main(int argc, char *argv[])
               {
                   ...
               }
           \endcode

    Other QDoc commands are disabled within \\code... \\endcode, and
    the special character '\\' is accepted and rendered like the rest
    of the code.

    To include code snippets from an external file, use the
    \l{07-0-qdoc-commands-includingexternalcode.html#snippet-command}
    {\\snippet} and
    \l{07-0-qdoc-commands-includingexternalcode.html#codeline-command}
    {\\codeline} commands.

    See also \l {c-command} {\\c}, \l
    {07-0-qdoc-commands-includingexternalcode.html#quotefromfile-command}
    {\\quotefromfile}, \l {badcode-command} {\\badcode}, \l
    {newcode-command} {\\newcode} and \l {oldcode-command}
    {\\oldcode}.

    \target badcode-command
    \section1 \\badcode 

    The \\badcode and \\endcode commands delimit a snippet of code
    that doesn't compile or is wrong for some other reason.

    The \\badcode command is similar to the \l {code-command} {\\code}
    command, but it renders the code snippet using a grey font instead
    of black.

    Like the \l {code-command} {\\code} command, this command begins
    its code snippet on a new line rendered in the code font and with
    the standard indentation.

           \code
           / *!
               The statement below is rendered using the
               regular \\code command:

               \code
                   statusbar()->message(tr("Host %1 found").arg(hostName));
               \ endcode

               While the following  statement is rendered using
               the \\badcode command:

               \badcode
                   statusbar()->message(tr("Host" + hostName + " found"));
               \ endcode
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The statement below is rendered using the
               regular \\code command:

               \code
                   statusbar()->message(tr("Host %1 found").arg(hostName));
               \endcode

               While the following  statement is rendered using
               the \\badcode command:

               \badcode
                   statusbar()->message(tr("Host" + hostName + " found"));
               \endcode
           \endquotation

    Other QDoc commands are disabled within \\badcode... \\endcode,
    and the special character '\\' is accepted and rendered like the
    rest of the code.

    See also \l {code-command} {\\code}, \l {newcode-command}
    {\\newcode} and \l {oldcode-command} {\\oldcode}.

    \target newcode-command
    \section1 \\newcode 

    The \\newcode, \\oldcode, and \\endcode commands enable you to
    show how to port a snippet of code to a new version of an API.

    The \\newcode command, and its companion the \\oldcode command, is
    a convenience combination of the \l {code-command} {\\code} and \l
    {badcode-command} {\\badcode} commands: The combination provides a
    text relating the two code snippets to each other. The command
    requires a preceding \\oldcode statement.

    Like the \l {code-command} {\\code} and \l {badcode-command}
    {\\badcode} commands, the \\newcode command renders its code on a
    new line in the documentation using a typewriter font and the
    standard indentation.

           \code
           / *!
               \oldcode
                   if (printer->setup(parent))
                       ...
               \newcode
                   QPrintDialog dialog(printer, parent);
                       if (dialog.exec())
                           ...
               \ endcode
           * /
           \endcode

    QDoc renders this as:

           \quotation
               \oldcode
                   if (printer->setup(parent))
                       ...
               \newcode
                   QPrintDialog dialog(printer, parent);
                       if (dialog.exec())
                           ...
               \endcode
           \endquotation

    Other QDoc commands are disabled within \\oldcode ... \\endcode,
    and the '\\' character doesn't need to be escaped.

    \target oldcode-command
    \section1 \\oldcode 

    The \\oldcode command requires a corresponding
    \\newcode statement; otherwise QDoc fails to parse the command
    and emits a warning.

    See also \l {newcode-command} {\\newcode} and \l {badcode-command} {\\badcode}.

    \target qml-command
    \section1 \\qml  \span {class="newStuff"} {(new)}

    The \\qml and \\endqml commands enclose a snippet of QML source
    code.  Currently, QDoc handles \\qml and \\endqml exactly the same
    as \\code and \\endcode.

    \code
    / *!
        \qml
            import QtQuick 1.0

            Row {
                Rectangle {
                    width: 100; height: 100
                    color: "blue"
                    transform: Translate { y: 20 }
                }
                Rectangle {
                    width: 100; height: 100
                    color: "red"
                    transform: Translate { y: -20 }
                }
            }
        \endqml
    * /
    \endcode

    QDoc renders this as:

    \qml
        import QtQuick 1.0

        Row {
            Rectangle {
                width: 100; height: 100
                color: "blue"
                transform: Translate { y: 20 }
            }
            Rectangle {
                width: 100; height: 100
                color: "red"
                transform: Translate { y: -20 }
            }
        }
    \endqml
*/

/*!
    \page 07-0-qdoc-commands-includingexternalcode.html
    \previouspage Including Code Inline
    \contentspage Table of Contents
    \nextpage Creating Links

    \title Including External Code

    The following commands enable you to include code snippets from
    external files. You can make QDoc include the complete contents of
    a file, or you can quote specific parts of the file and skip
    others. The typical use of the latter is to quote a file chunk by
    chunk.

    \bold{Note:} Although all these commands are for rendering C++
    code, the
    \l{07-0-qdoc-commands-includingexternalcode.html#snippet-command}
    {\\snippet} and
    \l{07-0-qdoc-commands-includingexternalcode.html#codeline-command}
    {\\codeline} commands are preferred over the others. These
    commands allow equivalent code snippets for other Qt language
    bindings to be substituted for the C++ snippets in the
    documentation.

    \target quotefile-command
    \section1 \\quotefile 

    The \\quotefile command expands to the complete contents of the
    file given as argument.

    The command considers the rest of the line as part of its
    argument, make sure to follow the file name with a line break.

    The file's contents is rendered in a separate paragraph, using a
    typewriter font and the standard indentation. The code is shown
    verbatim.

           \code
           / *!
               This is a simple "Hello world" example:

               \quotefile examples/main.cpp

               It contains only the bare minimum you need
               to get a Qt application up and running.
           * /
           \endcode

    QDoc renders this as:

           \quotation
               This is a simple "Hello world" example:

               \quotefile examples/main.cpp

               It contains only the bare minimum you need to get a Qt
               application up and running.
           \endquotation

    See also \l {quotefromfile-command} {\\quotefromfile} and
    \l {code-command} {\\code}.


    \target quotefromfile-command
    \section1 \\quotefromfile 

    The \\quotefromfile command opens the file given as argument for
    quoting.

    The command considers the rest of the line as part of its
    argument, make sure to follow the file name with a line break.

    The command is intended for use when quoting parts from file with
    the walkthrough commands: \l {printline-command} {\\printline}, \l
    {printto-command} {\\printto}, \l {printuntil-command}
    {\\printuntil}, \l {skipline-command} {\\skipline}, \l
    {skipto-command} {\\skipto}, \l {skipuntil-command}
    {\\skipuntil}. This enables you to quote specific portions of a
    file.

           \code
           / *!
               The whole application is contained within
               the \c main() function:

               \quotefromfile examples/main.cpp

               \skipto main
               \printuntil app(argc, argv)

               First we create a QApplication object using
               the \c argc and \c argv parameters.

               \skipto QPushButton
               \printuntil resize

               Then we create a QPushButton, and give it a reasonable
               size using the QWidget::resize() function.

               ...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The whole application is contained within
               the \c main() function:

               \quotefromfile examples/main.cpp

               \skipto main
               \printuntil app(argc, argv)

               First we create a QApplication object using the \c argc
               and \c argv parameters.

               \skipto QPushButton
               \printuntil resize

               Then we create a QPushButton, and give it a reasonable
               size using the QWidget::resize() function.

               ...
           \endquotation

    (\l {Example File} {The complete example file...})

    QDoc remembers which file it's quoting, and the current position
    within that file (see \l {file} {\\printline} for more
    information). There is no need to "close" the file.

    Earlier we called this command \\quotefile. For more information,
    see the \l
    {26-qdoc-commands-compatibility.html#quotefromfile-versus-quotefile}
    {compatibility} section.

    See also \l {quotefile-command} {\\quotefile}, \l {code-command}
    {\\code} and \l {dots} {\\dots}.

    \target printline-command
    \section1 \\printline 

    The \\printline command expands to the line from the current
    position to the next non-blank line of the current souce file.

    To ensure that the documentation remains synchronized with the
    source file, a substring of the line must be specified as an
    argument to the command. Note that the command considers the rest
    of the line as part of its argument, make sure to follow the
    substring with a line break.

    The line from the source file is rendered as a separate paragraph,
    using a typewriter font and the standard indentation. The code is
    shown verbatim.

           \code
           / *!
               There has to be exactly one QApplication object
               in every GUI application that uses Qt.

               \quotefromfile examples/main.cpp

               \printline QApplication

               This line includes the QApplication class
               definition. QApplication manages various
               application-wide resources, such as the
               default font and cursor.

               \printline QPushButton

               This line includes the QPushButton class
               definition. The QPushButton widget provides a command
               button.

               \printline main

               The main function...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               There has to be exactly one QApplication object
               in every GUI application that uses Qt.

               \quotefromfile examples/main.cpp

               \skipto QApplication
               \printline QApplication

               This line includes the QApplication class
               definition. QApplication manages various
               application-wide resources, such as the
               default font and cursor.

               \printline QPushButton

               This line includes the QPushButton class
               definition. The QPushButton widget provides a command
               button.

               \printline main

               The main function...
           \endquotation

    (\l {Example File} {The complete example file...})

    \target file

    QDoc reads the file sequentially. To move the current position
    forward you can use either of the \l {skipline-command}
    {\\skip...} commands. To move the current position backward, you
    can use the \l {quotefromfile-command} {\\quotefromfile} command
    again.

    \target substring

    If the substring argument is surrounded by slashes it is
    interpreted as a \l {regular expression}.

           \code
           / *!
               \quotefromfile widgets/scribble/mainwindow.cpp

               \skipto closeEvent
               \printuntil /^\}/

               Close events are sent to widgets that the users want to
               close, usually by clicking \c File|Exit or by clicking
               the \c X title bar button. By reimplementing the event
               handler, we can intercept attempts to close the
               application.
           * /
           \endcode

    QDoc renders this as:

           \quotation
               \quotefromfile widgets/scribble/mainwindow.cpp

               \skipto closeEvent
               \printuntil /^\}/

               Close events are sent to widgets that the users want to
               close, usually by clicking \c File|Exit or by clicking
               the \c X title bar button. By reimplementing the event
               handler, we can intercept attempts to close the
               application.
           \endquotation

    (\l {widgets/scribble} {The complete example file...})

    The regular expression \c /^\}/ makes QDoc print until the first
    '}' character occurring at the beginning of the line without
    indentation. /.../ encloses the regular expression, and '^' means
    the beginning of the line. The '}' character must be escaped since
    it is a special character in regular expressions.

    QDoc will emit a warning if the specified substring or regular
    expression cannot be located, i.e. if the source code has changed.

    See also \l {printto-command} {\\printto} and \l
    {printuntil-command} {\\printuntil}.

    \target printto-command
    \section1 \\printto 

    The \\printto command expands to all the lines from the current
    position up to and \e excluding the next line containing a given
    substring.

    The command considers the rest of the line as part of its
    argument, make sure to follow the substring with a line break. The
    command also follows the same conventions for \l {file}
    {positioning} and \l {substring} {argument} as the \l
    {printline-command} {\\printline} command.

    The lines from the source file are rendered in a separate
    paragraph, using a typewriter font and the standard
    indentation. The code is shown verbatim.

           \code
           / *!
               The whole application is contained within the
               \c main() function:

               \quotefromfile examples/main.cpp
               \printto hello

               First we create a QApplication object using the \c argc and
               \c argv parameters...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The whole application is contained within the
               \c main() function:

               \quotefromfile examples/main.cpp
               \skipto main
               \printto hello

               First we create a QApplication object using the \c argc
               and \c argv parameters...
           \endquotation

    (\l {Example File} {The complete example file...})

    See also \l {printline-command} {\\printline} and \l
    {printuntil-command} {\\printuntil}.

    \target printuntil-command
    \section1 \\printuntil 

    The \\printuntil command expands to all the lines from the current
    position up to and \e including the next line containing a given
    substring.

    The command considers the rest of the line as part of its
    argument, make sure to follow the substring with a line break. The
    command also follows the same conventions for \l {file}
    {positioning} and \l {substring} {argument} as the \l
    {printline-command} {\\printline} command.

    The lines from the source file are rendered in a separate
    paragraph, using a typewriter font and the standard
    indentation. The code is shown verbatim.

           \code
           / *!
               The whole application is contained within the
               \c main() function:

               \quotefromfile examples/main.cpp
               \skipto main
               \printuntil hello

               First we create a QApplication object using the
               \c argc and \c argv parameters, then we create
               a QPushButton.
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The whole application is contained within the
               \c main() function:

               \quotefromfile examples/main.cpp
               \skipto main
               \printuntil hello

               First we create a \l
               {http://qt.nokia.com/doc/4.0/qapplication} {QApplication}
               object using the \c argc and \c argv parameters, then we
               create a \l
               {http://qt.nokia.com/doc/4.0/qpushbutton} {QPushButton}.
           \endquotation

    (\l {Example File} {The complete example file...})

    See also \l {printline-command} {\\printline} and \l
    {printto-command} {\\printto}.

    \target skipline-command
    \section1 \\skipline 

    The \\skipline command ignores the next non-blank line in the
    current source file.

    Doc reads the file sequentially, and the \\skipline command is
    used to move the current position (omitting a line of the source
    file). See the remark about \l {file} {file positioning} above.

    The command considers the rest of the line as part of its
    argument, make sure to follow the substring with a line break. The
    command also follows the same conventions for \l {substring}
    {argument} as the \l {printline-command} {\\printline} command,
    and it is used in conjunction with the \l {quotefromfile-command}
    {\\quotefromfile} command.

           \code
           / *!
               QPushButton is a GUI push button that the user
               can press and release.

               \quotefromfile examples/main.cpp
               \skipline QApplication
               \printline QPushButton

               This line includes the QPushButton class
               definition. For each class that is part of the
               public Qt API, there exists a header file of
               the same name that contains its definition.
           * /
           \endcode

    QDoc renders this as:

           \quotation
               \l
               QPushButton is a GUI push button that the user
               can press and release.

               \quotefromfile examples/main.cpp
               \skipto QApplication
               \skipline QApplication
               \printline QPushButton

               This line includes the QPushButton class
               definition. For each class that is part of the public
               Qt API, there exists a header file of the same name
               that contains its definition.
           \endquotation

    (\l {Example File} {The complete example file...})

    See also \l {skipto-command} {\\skipto}, \l {skipuntil-command}
    {\\skipuntil} and \l {dots} {\\dots}.

    \target skipto-command
    \section1 \\skipto 

    The \\skipto command ignores all the lines from the current
    position up to and \e excluding the next line containing a given
    substring.

    QDoc reads the file sequentially, and the \\skipto command is used
    to move the current position (omitting one or several lines of the
    source file). See the remark about \l {file} {file positioning}
    above.

    The command considers the rest of the line as part of its
    argument, make sure to follow the substring with a line break.

    The command also follows the same conventions for \l {substring}
    {argument} as the \l {printline-command} {\\printline} command,
    and it is used in conjunction with the \l {quotefromfile-command}
    {\\quotefromfile} command.

           \code
           / *!
               The whole application is contained within
               the \c main() function:

               \quotefromfile examples/main.cpp
               \skipto main
               \printuntil }

               First we create a QApplication object.  There
               has to be exactly one such object in
               every GUI application that uses Qt. Then
               we create a QPushButton, resize it to a reasonable
               size...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The whole application is contained within
               the \c main() function:

               \quotefromfile examples/main.cpp
               \skipto main
               \printuntil }

               First we create a QApplication object.  There has to be
               exactly one such object in every GUI application that
               uses Qt. Then we create a QPushButton, resize it to a
               reasonable size ...
           \endquotation

    (\l {Example File} {The complete example file...})

    See also \l {skipline-command} {\\skipline}, \l
    {skipuntil-command} {\\skipuntil} and \l {dots} {\\dots}.

    \target skipuntil-command
    \section1 \\skipuntil 

    The \\skipuntil command ignores all the lines from the current
    position up to and \e including the next line containing a given
    substring.

    QDoc reads the file sequentially, and the \\skipuntil command is
    used to move the current position (omitting one or several lines
    of the source file). See the remark about \l {file} {file
    positioning} above.

    The command considers the rest of the line as part of its
    argument, make sure to follow the substring with a line break.

    The command also follows the same conventions for \l {substring}
    {argument} as the \l {printline-command} {\\printline} command,
    and it is used in conjunction with the \l {quotefromfile-command}
    {\\quotefromfile} command.

           \code
           / *!
               The first thing we did in the \c main() function
               was to create a QApplication object \c app.

               \quotefromfile examples/main.cpp
               \skipuntil show
               \dots
               \printuntil }

               In the end we must remember to make \c main() pass the
               control to Qt. QCoreApplication::exec() will return when
               the application exits...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               The first thing we did in the \c main() function was to
               create a QApplication object \c app.

               \quotefromfile examples/main.cpp
               \skipuntil show
               \dots
               \printuntil }

               In the end we must remember to make \c main() pass the
               control to Qt. QCoreApplication::exec()
               will return when the application exits...
           \endquotation

    (\l {Example File} {The complete example file...})

    See also \l {skipline-command} {\\skipline}, \l {skipto-command}
    {\\skipto} and \l {dots} {\\dots}.

    \target dots-command
    \section1 \\dots 

    The \\dots command indicates that parts of the source file have
    been omitted when quoting a file.

    The command is used in conjunction with the \l
    {quotefromfile-command} {\\quotefromfile} command, and should be
    stated on its own line. The dots are rendered on a new line, using
    a typewriter font.

           \code
           / *!
               \quotefromfile examples/main.cpp
               \skipto main
               \printuntil {
               \dots
               \skipuntil exec
               \printline }
           * /
           \endcode

    QDoc renders this as:

           \quotefromfile examples/main.cpp
           \skipto main
           \printuntil {
           \dots
           \skipuntil exec
           \printline }

    (\l {Example File} {The complete example file...})

    The default indentation is 4 spaces, but this can be adjusted
    using the command's optional argument.

    \code
    / *!
        \dots 0
        \dots
        \dots 8
        \dots 12
        \dots 16
    * /
    \endcode

    QDoc renders this as:

    \dots 0
    \dots
    \dots 8
    \dots 12
    \dots 16

    See also \l {skipline-command} {\\skipline}, \l {skipto-command}
    {\\skipto} and \l {skipuntil-command} {\\skipuntil}.

    \target snippet-command
    \section1 \\snippet 
    
    The \\snippet command causes a code snippet to be included
    verbatim as preformatted text, which may be syntax highlighted.

    Each code snippet are referenced by the file that holds it and by
    a unique identifier for that file. Snippet files are typically
    stored in a \c{snippets} directory inside the documentation
    directory (e.g., \c{$QTDIR/doc/src/snippets}).

    For example, the following documentation references a snippet in a
    file residing in a subdirectory of the documentation directory:
           
           \code
           \snippet snippets/textdocument-resources/main.cpp Adding a resource
           \endcode
           
    The text following the file name is the unique identifier for the
    snippet. This is used to delimit the quoted code in the relevant
    snippet file as shown in the following example that corresponds to
    the above \c{\\snippet} command:
           
           \dots
           \code
               QImage image(64, 64, QImage::Format_RGB32);
               image.fill(qRgb(255, 160, 128));

           //! [Adding a resource]
               document->addResource(QTextDocument::ImageResource,
                   QUrl("mydata://image.png"), QVariant(image));
           //! [Adding a resource]
           \endcode
           \dots

    \target codeline-command
    \section1 \\codeline 

    The \\codeline command inserts a blank line of preformatted
    text. It is used to insert gaps between snippets without closing
    the current preformatted text area and opening a new one.

*/

/*!
    \page  07-1-example.html
    \previouspage Including External Code
    \contentspage Table of Contents

    \title Example File

    \quotefile examples/main.cpp
*/

/*!
    \page 08-qdoc-commands-creatinglinks.html
    \previouspage Including External Code
    \contentspage Table of Contents
    \nextpage Including Images

    \title Creating Links

    These commands are for creating hyperlinks to classes, functions,
    examples, and other targets. 

    \target l-command
    \section1 \\l (link)

    The \\l link command is used to create a hyperlink to many
    different kinds of targets. The command's general syntax is:

    \code
      \l {link target} {link text}
    \endcode

    \code
       / *!
          Read the \l {http://qt.nokia.com/doc/4.0/}
          {Qt's Reference Documentation} carefully.
       * /
    \endcode

    QDoc renders this as:

    \quotation
       Read the \l {http://qt.nokia.com/doc/4.0/}
       {Qt's Reference Documentation} carefully.
    \endquotation

    If the link target is equivalent to the link text, the second
    argument can be omitted.

    For example, if you have documentation like:

    \code
      / *!
         \target assertions

         Assertions make some statement about the text at the
         point where they occur in the regexp but they do not
         match any characters.

         ...

         Regexps are built up from expressions, quantifiers, and
         \l {assertions} {assertions}.
      * /
    \endcode

    You can simplify this as follows:

    \code
      / *!
        \target assertions

        Assertions make some statement about the text at the
        point where they occur in the regexp but they do not
        match any characters.

        ...

        Regexps are built up from expressions, quantifiers, and
        \l assertions.
      * /
    \endcode

    For the one-parameter version the braces can often be omitted.
    The \\l command supports several kinds of links:

    \list

    \o \c {\l QWidget} - The name of a class documented with the \l
    {class-command} {\\class} command.

    \o \c {\l QWidget::sizeHint()} - The name of a member function,
    documented with or without an \l {fn-command} {\\fn} command.

    \o \c {\l <QtGlobal>} - The subject of a \l {headerfile-command}
    {\\headerfile} command.

    \o \c {\l widgets/wiggly} - The relative path used in an \l
    {example-command} {\\example} command.

    \o \c {\l {QWidget Class Reference}} - The title used in a
    \l {title-command} {\\title} command.

    \o \c {\l {Introduction to QDoc}}- The text from one of the
    \l{part-command} {\\part}, \l{chapter} {\\chapter} or \l
    {sectionOne-command} {\\section} commands.

    \o \c {\l fontmatching} - The argument of a \l {target-command}
    {\\target} command.

    \o \c {\l {Shared Classes}} - A keyword named in a \l
    {keyword-command} {\\keyword} command.

    \o \c {\l network.html} - The file name used in a \l
    {page-command} {\\page} command.

    \o \c {\l http://www.trolltech.com/} - A URL.

    \endlist

    QDoc also tries to make a link out of any words that don't
    resemble any normal English words, for example Qt class names or
    functions, like QWidget or QWidget::sizeHint(). In these cases,
    the \\l command can actually be omitted, but by using the command,
    you ensure that QDoc will emit a warning if it cannot find the
    link target. In addition, if you only want the function name to
    appear in the link, you can use the following syntax:

    \list
        \o \c {\l {QWidget::} {sizeHint()}}
    \endlist

    QDoc renders this as:

    \quotation
    \l {QWidget::} {sizeHint()}   
    \endquotation

    See also \l {sa-command} {\\sa}, \l {target-command} {\\target}
    and \l {keyword-command} {\\keyword}.


    \target sa-command
    \section1 \\sa (see also)

    The \\sa command defines a list of links that will be rendered in
    a separate "See also" section at the bottom of the documentation
    unit.

    The command takes a comma-separated list of links as its
    argument. If the line ends with a comma, you can continue
    the list on the next line.  The general syntax is:

    \code
    \sa {the first link}, {the second link},
        {the third link}, ...
    \endcode

    QDoc will automatically try to generate "See also" links
    interconnecting a property's various functions. For example, a
    setVisible() function will automatically get a link to visible()
    and vice versa.

    In general, QDoc will generate "See also" links that interconnect
    the functions that access the same property. It recognizes four
    different syntax versions:

    \list
      \o \c property()
      \o \c setProperty()
      \o \c isProperty()
      \o \c hasProperty()
    \endlist

    The \\sa command supports the same kind of links as the \l
    {l-command} {\\l} command.

    \code
      / *!
         Appends the actions \a actions to this widget's
         list of actions.

         \sa removeAction(), QMenu, addAction()
      * /
      void QWidget::addActions(QList<QAction *> actions)
      {
      ...
      }
    \endcode

    QDoc renders this as:

    \quotation
        \bold {void QWidget::addActions ( QList<QAction*>
        \e actions )}

        Appends the actions \e actions to this widget's list of
        actions.

        See also \l {QWidget::removeAction()} {removeAction()},
        \l QMenu, and \l {QWidget::addAction()} {addAction()}.
    \endquotation

    See also \l {l-command} {\\l}, \l {target-command} {\\target} and
    \l {keyword-command} {\\keyword}.


    \target target-command
    \section1 \\target 

    The \\target command names a place in the documentation that you
    can link to using the \l {l-command} {\\l (link)} and \l
    {sa-command} {\\sa (see also)} commands.

    The text up to the line break becomes the target name. Be sure to
    follow the target name with a line break. Curly brackets are not
    required around the target name, but they may be required when the
    target name is used in a link cammand. See below.

    \code
    / *!
        \target capturing parentheses
        \section1 Capturing Text

        Parentheses allow us to group elements together so that
        we can quantify and capture them.

        ...
    * /
    \endcode

    The target name \e{capturing parentheses} can be linked from
    within the same document containing the target in two ways:

    \list
      \o \c {\l {capturing parentheses}} (from within the same qdoc comment)
      \o \c {\l qregexp.html#capturing-parentheses} (from elsewhere in the same document)
    \endlist

    \note The brackets in the link example are required because the
    target name contains spaces.

    From other documents, the target name can be linked this way:

    \list
      \o \c {\l http://www.trolltech.com/4.0/doc/html/qregexp.html#capturing-parentheses}
    \endlist

    See also \l {l-command} {\\l}, \l {sa-command} {\\sa} and \l
    {keyword-command} {\\keyword}.

    \target keyword-command
    \section1 \\keyword 

    The \\keyword command names a place in the documentation that you
    can link to using the \l {l-command} {\\l (link)} and \l
    {sa-command} {\\sa (see also)} commands.

    The \\keyword command is like the \l {target-command} {\\target}
    command, but stronger. A keyword can be linked from anywhere using
    a simple syntax.

    Keywords must be unique over all the documents processed during
    the QDoc run. The command uses the rest of the line as its
    argument. Be sure to follow the keyword with a line break.


    \code
    / *!
        \class QRegExp
        \reentrant
        \brief The QRegExp class provides pattern
               matching using regular expressions.
        \ingroup tools
        \ingroup misc
        \ingroup shared
        \mainclass

        \keyword regular expression

        Regular expressions, or "regexps", provide a way to
        find patterns within text.

        ...
    * /
    \endcode

    The location marked with the keyword can be linked with:

    \code
    / *!
        When a string is surrounded by slashes, it is
        interpreted as a \l {regular expression}.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        When a string is surrounded by slashes, it's
        interpreted as a \l {regular expression}.
    \endquotation

    If the keyword text contains spaces, the brackets are required.

    See also \l {l-command} {\\l (link)}, \l {sa-command} {\\sa (see
    also)} and \l {target-command} {\\target}.

*/

/*!
    \page 09-qdoc-commands-includingimages.html
    \previouspage Creating Links
    \contentspage Table of Contents
    \nextpage Tables and Lists

    \title Including Images

    The graphic commands makes it possible to include images in the
    documentation. The images can be rendered as separate paragraphs,
    or within running text.

    \target image-command
    \section1 \\image 

    The \\image command expands to the image specified by its first
    argument, and renders it centered as a separate paragraph.

    The \\image command replaces the old \\img command. For more
    information, see the \l
    {26-qdoc-commands-compatibility.html#image-versus-img}
    {compatibility} section.

    The command takes two arguments. The first argument is the name of
    the image file. The second argument is optional and is a simple
    description of the image, equivalent to the HTML alt="" in an image
    tag. The description is used for tooltips, and for when a browser
    doesn't support images, like the Lynx text browser.

    The remaining text \e{after} the file name is the optional,
    description argument. Be sure to follow the file name or the
    description with a line break. Curly brackets are required if the
    description argument spans multiple lines.

    \code
    / *!
        Qt by Trolltech is a C++ toolkit for cross-platform GUI
        application development.

        \image happyguy.jpg "Happy guy"

        Qt provides single-source portability across Microsoft
        Windows, Mac OS X, Linux, and all major commercial Unix
        variants. It is also available for embedded devices.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        Qt by Trolltech is a C++ toolkit for cross-platform GUI
        application development.

        \image happyguy.jpg image "Happy guy"

        Qt provides single-source portability across Microsoft
        Windows, Mac OS X, Linux, and all major commercial Unix
        variants. It is also available for embedded devices.
        \endquotation

    See also \l {inlineimage-command} {\\inlineimage} and \l
    {caption-command} {\\caption}.

    \target inlineimage-command
    \section1 \\inlineimage 

    The \\inlineimage command expands to the image specified by its
    argument. The image is rendered inline with the rest of the text.

    The command takes two arguments. The first argument is the name of
    the image file. The second argument is optional and is a simple
    description of the image, equivalent to the HTML alt="" in an image
    tag. The description is used for tooltips, and for when a browser
    doesn't support images, like the Lynx text browser.

    The most common use of the \\inlineimage command is in lists and
    tables. Here is an example of including inline images in a list:

    \code
    / *!
        \list 1
          \o \inlineimage happy.gif Oh so happy!
          \o \inlineimage happy.gif Oh so happy!
          \o \inlineimage happy.gif Oh so happy!
        \endlist
    * /
    \endcode

    QDoc renders this as:

    \list 1
      \o \inlineimage happy.gif Oh so happy!
      \o \inlineimage happy.gif Oh so happy!
      \o \inlineimage happy.gif Oh so happy!
    \endlist

    Her eis an example of including inline images in a table:

    \code
    / *!
        \table
        \header
            \o Trolltech
            \o Trolltech
        \row
            \o \inlineimage happy.gif Oh so happy!
            \o \inlineimage happy.gif Oh so happy!
        \row
            \o \inlineimage happy.gif Oh so happy!
            \o \inlineimage happy.gif Oh so happy!
        \endtable
    * /
    \endcode

    QDoc renders this as:

    \raw HTML
        <table align="center" cellpadding="2"
            cellspacing="1" border="0">
        <tr valign="top" bgcolor="#a2c511">
            <th>Trolltech</th>
            <th>Trolltech</th>
        </tr>
        <tr valign="top" bgcolor="#f0f0f0">
            <td><img src="images/happy.gif" alt="Oh so happy!" />
            </td>
            <td><img src="images/happy.gif" alt="Oh so happy!" />
            </td>
        </tr>
        <tr valign="top" bgcolor="#f0f0f0">
            <td><img src="images/happy.gif" alt="Oh so happy!"/>
            </td>
            <td><img src="images/happy.gif" alt="Oh so happy!" />
            </td>
        </tr>
        </table>
    \endraw

    The command can also be used to insert an image inline with the
    text.

    \code
    / *!
        \inlineimage training.jpg Training by Trolltech
        The Qt Programming course is offered as a
        five day Open Enrollment Course. The classes
        are open to the public.While the course is open
        to anyone who wants to learn, attendees should
        have significant experience in C++ development
        to derive maximum benefit from the course.
    * /
    \endcode

    QDoc renders this as:

    \quotation
       \inlineimage training.jpg Training by Trolltech
        The Qt Programming course is offered as a
        five day Open Enrollment Course. The classes
        are open to the public.While the course is open
        to anyone who wants to learn, attendees should
        have significant experience in C++ development
        to derive maximum benefit from the course.
    \endquotation

    See also \l {image-command} {\\image} and \l {caption-command} {\\caption}.

    \target caption-command
    \section1 \\caption 

    The \\caption command provides a caption for an image.

    The command takes all the text up to the end of the paragraph to
    be the caption. Experiment until you get the effect you want.

    \code
    / *!
      \table 100%
        \row
          \o \image windowsvista-pushbutton.png 
             \caption The QPushButton widget provides a command button.
          \o \image windowsvista-toolbutton.png
             \caption The QToolButton class provides a quick-access button to commands
             or options, usually used inside a QToolBar.
       \endtable
    * /
    \endcode

    QDoc renders this as:

    \table 100%
      \row
        \o \image windowsvista-pushbutton.png 
           \caption The QPushButton widget provides a command button.
        \o \image windowsvista-toolbutton.png
           \caption The QToolButton class provides a quick-access button to commands
           or options, usually used inside a QToolBar.
    \endtable

    See also \l {image-command} {\\image} and \l {inlineimage-command}
    {\\inlineimage} 
*/

/*!
    \page 10-qdoc-commands-tablesandlists.html
    \previouspage Including Images
    \contentspage Table of Contents
    \nextpage Special Content

    \title Tables and Lists

    These commands enable creating lists and tables. A list is
    rendered left aligned as a separate paragraph. A table is rendered
    centered as a separate paragraph. The table width depends on the
    width of its contents.

    \target table-command
    \section1 \\table 

    The \\table and \\endtable commands delimit the contents of a
    table.

    The command accepts a single argument specifying the table's width
    as a percentage of the page width:

           \code
           / *!
               \table 100 %

                  ...

               \endtable
           * /
           \endcode

    The code above ensures that the table will fill all available
    space. If the table's width is smaller than 100 %, the table will
    be centered in the generated documentation.

    A table can contain headers, rows and columns. A row starts with a
    \l {row-command} {\\row} command and consists of cells, which
    starts with a \l {o-command} {\\o} command. There is also a \l
    {header-command} {\\header} command which is a special kind of row
    with a special formatting.

           \code
           / *!
               \table
               \header
                   \o Qt Core Feature
                   \o Brief Description
               \row
                   \o \l {Signal and Slots}
                   \o Signals and slots are used for communication
                      between objects.
               \row
                   \o \l {Layout Management}
                   \o The Qt layout system provides a simple
                      and powerful way of specifying the layout
                      of child widgets.
               \row
                   \o \l {Drag and Drop}
                   \o Drag and drop provides a simple visual
                      mechanism which users can use to transfer
                      information between and within applications.
               \endtable
           * /
           \endcode

    QDoc renders this as:

           \raw HTML
               <table align="center" cellpadding="2"
                   cellspacing="1" border="0">
               <tr valign="top" bgcolor="#a2c511">
                   <th>Qt Core Feature</th>
                   <th>Brief Description</th>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td>
                   <a href="http://qt.nokia.com/doc/4.0/signalsandslots.html">
                       Signals and Slots</a>
                   </td>
                   <td>Signals and slots are used for communication
                       between objects.</td>
               </tr>

               <tr valign="top" bgcolor="#c0c0c0">
                   <td>
                   <a href=http://qt.nokia.com/doc/4.0/layout.html">
                       Layout Management</a></td>
                   <td>The Qt layout system provides a simple
                       and powerful way of specifying the layout
                       of child widgets.</td>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td>
                   <a href=http://qt.nokia.com/doc/4.0/dnd.html">
                       Drag and Drop</a></td>
                   <td>Drag and drop provides a simple visual
                       mechanism which users can use to transfer
                       information between and within applications.</td>
               </tr>

               </table>
           \endraw

    You can also make cells span several rows and columns. For
    example:

           \code
           / *!
               \table
               \header
                   \o {3,1} This header cell spans three columns
                      but only one row.
               \row
                   \o {2, 1} This table cell spans two columns
                      but only one row
                   \o {1, 2} This table cell spans only one column,
                   but two rows.
               \row
                   \o A regular table cell
                   \o A regular table cell
               \endtable
           * /
           \endcode

    QDoc renders this as:

           \raw HTML
               <table align="center" cellpadding="2" cellspacing="1"
                border="0">

               <tr valign="top" bgcolor="#a2c511">
                   <th colspan="3" rowspan=" 1">
                   This header cell spans three columns but only one row
                   </th>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td colspan="2" rowspan=" 1">
                   This table cell spans two columns but only one row
                   </td>
                   <td rowspan=" 2">
                   This table cell spans only one column, but two rows.
                   </td>
               </tr>

               <tr valign="top" bgcolor="#c0c0c0">
                   <td>A regular table cell</td>
                   <td>A regular table cell</td>
               </tr>

               </table>
           \endraw

    See also \l {header-command} {\\header}, \l {row-command} {\\row} and \l {o-command} {\\o}.

    \target header-command
    \section1 \\header 

    The \\header command indicates that the following table cells are
    the current table's column headers.

    The command can only be used within the \l{table-command}
    {\\table...\\endtable} commands. A header can contain several
    cells. A cell is created with the \l {o-command} {\\o} command.

    A header cell's text is centered within the table cell and
    rendered using a bold font.

           \code
           / *!
               \table
               \header
                   \o Qt Core Feature
                   \o Brief Description
               \row
                   \o \l {Signal and Slots}
                   \o Signals and slots are used for communication
                      between objects.
               \endtable
           * /
           \endcode

    QDoc renders this as:

           \raw HTML
               <table align="center" cellpadding="2"
                   cellspacing="1" border="0">
               <tr valign="top" bgcolor="#a2c511">
                   <th>Qt Core Feature</th>
                   <th>Brief Description</th>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td>
                   <a href="http://qt.nokia.com/doc/4.0/signalsandslots.html">
                       Signals and Slots</a>
                   </td>
                   <td>Signals and slots are used for communication
                       between objects.</td>
               </tr>
               </table>
           \endraw

    See also \l {table-command} {\\table}, \l {row-command} {\\row} and \l {o-command} {\\o}.

    \target row-command
    \section1 \\row 

    The \\row command begins a new row in a table. The \l {o-command}
    {\\o items} that belong in the new row will immediately follow the
    \\row.

    The command can only be used within the \l{table-command}
    {\\table...\\endtable} commands. A row can contain several
    cells. A cell is created with the \l {o-command} {\\o} command.

    The background cell color of each row alternates between two
    shades of grey, making it easier to distinguish the rows from each
    other. The cells' contents is left aligned.

           \code
           / *!
               \table
               \header
                   \o Qt Core Feature
                   \o Brief Description
               \row
                   \o \l {Signal and Slots}
                   \o Signals and slots are used for communication
                      between objects.
               \row
                   \o \l {Layout Management}
                   \o The Qt layout system provides a simple
                      and powerful way of specifying the layout
                      of child widgets.
               \row
                   \o \l {Drag and Drop}
                   \o Drag and drop provides a simple visual
                      mechanism which users can use to transfer
                      information between and within applications.
               \endtable
           * /
           \endcode

    QDoc renders this as:

           \raw HTML
               <table align="center" cellpadding="2"
                   cellspacing="1" border="0">
               <tr valign="top" bgcolor="#a2c511">
                   <th>Qt Core Feature</th>
                   <th>Brief Description</th>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td>
                   <a href="http://qt.nokia.com/doc/4.0/signalsandslots.html">
                       Signals and Slots</a>
                   </td>
                   <td>Signals and slots are used for communication
                       between objects.</td>
               </tr>

               <tr valign="top" bgcolor="#c0c0c0">
                   <td>
                   <a href=http://qt.nokia.com/doc/4.0/layout.html">
                       Layout Management</a></td>
                   <td>The Qt layout system provides a simple
                       and powerful way of specifying the layout
                       of child widgets.</td>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td>
                   <a href=http://qt.nokia.com/doc/4.0/dnd.html">
                       Drag and Drop</a></td>
                   <td>Drag and drop provides a simple visual
                       mechanism which users can use to transfer
                       information between and within applications.</td>
               </tr>

               </table>
           \endraw

    See also \l {table-command} {\\table}, \l {header-command}
    {\\header} and \l {o-command} {\\o}.

    \target value-command
    \section1 \\value 

    The \\value command starts the documentation of a C++ enum item.

    The command's first argument is the enum item. Then follows its
    associated description. The description argument ends at the next
    blank line or \\value. The arguments are rendered within a table.

    The documentation will be located in the associated class, header
    file or namespace documentation. See the \l {enum-command}
    {\\enum} documentation for an example.

    See also \l {enum-command} {\\enum} and \l {omitvalue-command} {\\omitvalue}.

    \target omitvalue-command
    \section1 \\omitvalue 

    The \\omitvalue command excludes a C++ enum item from the
    documentation.

    The command's only argument is the name of the enum item that will
    be omitted. See the \l {enum-command} {\\enum} documentation for
    an example.

    See also \l {enum-command} {\\enum} and \l {value-command}
    {\\value}.

    \target list-command
    \section1 \\list 

    The \\list and \\endlist commands delimit a list of items.

    Create each list item with the \l {o-command} {\\o} command. A
    list always contains one or more items. Lists can be nested. For
    example:

           \code
           / *!
               \list
               \o Qt Reference Documentation: Getting Started
                   \list
                   \o How to Learn Qt
                   \o Installation
                       \list
                       \o Qt/X11
                       \o Qt/Windows
                       \o Qt/Mac
                       \o Qt/Embedded
                       \endlist
                   \o Tutorial and Examples
                   \endlist
               \endlist
           * /
           \endcode

    QDoc renders this as:

           \list
           \o Qt Reference Documentation: Getting Started
               \list
               \o How to Learn Qt
               \o Installation
                   \list
                   \o Qt/X11
                   \o Qt/Windows
                   \o Qt/Mac
                   \o Qt/Embedded
                   \endlist
               \o Tutorial and Examples
               \endlist
           \endlist

    The \\list command takes an optional argument providing
    alternative appearances for the list items.

           \code
           / *!
               \list
                   \o How to Learn Qt
                   \o Installation
                   \o Tutorial and Examples
               \endlist
           * /
           \endcode

     QDoc renders the list items with bullets (the default):

           \list
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples
           \endlist

    \warning There appears to be a bug in qdoc3 here. If you include
    any of the argument types, you get a numeric list. We're looking
    into it.

    If you provide 'A' as an argument to the \\list command, the
    bullets are replaced with characters in alphabetical order:

           \list A
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples
           \endlist

     If you replace 'A' with '1', the list items are numbered in
     ascending order:

           \list 1
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples

           \endlist

    If you provide 'i' as the argument, the bullets are replaced with
    roman numerals:

           \list i
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples
           \endlist

    Finally, you can make the list items appear with roman numbers
    following in ascending order if you provide 'I' as the optional
    argument:

           \list I
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples
           \endlist

    You can also make the listing start at any character or number by
    simply provide the number or character you want to start at. For
    example:

           \code
           / *!
               \list G
                   \o How to Learn Qt
                   \o Installation
                   \o Tutorial and Examples
               \endlist
           * /
           \endcode

    QDoc renders this as:

           \list G
               \o How to Learn Qt
               \o Installation
               \o Tutorial and Examples
           \endlist

    See also \l {o-command} {\\o}.

    \target o-command
    \section1 \\o (cell, item)

    The \\o command announce a table or list item.

    Earlier we used the \l {i-command} {\\i} command for this
    purpose. For more information see the \l
    {26-qdoc-commands-compatibility.html#o-versus-i} {compatibility}
    section.

    The command can only be used within the \l{table-command}
    {\\table...\\endtable} or \l{list-command} {\\list... \\endlist}
    commands.

    It considers everything until the next occurrence of the \\o
    command, or the currently applicable \l {table-command}
    {\\endtable} or \l {list-command} {\\endlist} command, as its
    argument. For examples, see \l {table-command} {\\table} and \l
    {list-command} {\\list}.

    If the command is used within a table, you can in addition specify
    how many rows or columns the item should span.

           \code
           / *!
               \table
               \header
                   \o {3,1} This header cell spans three columns
                      but only one row.
               \row
                   \o {2, 1} This table item spans two columns
                      but only one row
                   \o {1, 2} This table item spans only one column,
                   but two rows.
               \row
                   \o A regular table item
                   \o A regular table item
               \endtable
           * /
           \endcode

    QDoc renders this as:

           \raw HTML
               <table align="center" cellpadding="2" cellspacing="1"
                border="0">

               <tr valign="top" bgcolor="#a2c511">
                   <th colspan="3" rowspan=" 1">
                   This header cell spans three columns but only one row
                   </th>
               </tr>

               <tr valign="top" bgcolor="#d0d0d0">
                   <td colspan="2" rowspan=" 1">
                   This table item spans two columns but only one row
                   </td>
                   <td rowspan=" 2">
                   This table item spans only one column, but two rows.
                   </td>
               </tr>

               <tr valign="top" bgcolor="#c0c0c0">
                   <td>A regular table item</td>
                   <td>A regular table item</td>
               </tr>

               </table>
           \endraw

    If not specified, the item will span one column and one row.

    See also \l {table-command} {\\table}, \l {header-command}
    {\\header}, \l {list-command} {\\list} and \l {o-command} {\\o}.

*/

/*!
    \page 11-qdoc-commands-specialcontent.html
    \previouspage Tables and Lists
    \contentspage Table of Contents
    \nextpage Miscellaneous

    \title Special Content

    The document contents commands identify parts of the documentation,
    i.e. parts with a special rendering, conceptual meaning or
    function.

    \target abstract-command
    \section1 \\abstract 

    The \\abstract and \\endabstract commands delimit a
    document's abstract section.

    The abstract section is rendered as an indented italicized
    paragraph.

    \warning The \bold{\\abstract} and \bold{\\endabstract} commands
    have not been implemented. The abstract section is rendered as a
    regular HTML paragraph.

    \target quotation-command
    \section1 \\quotation 

    The \\quotation and \\endquotation commands delimit a long quotation.

    The text in the delimited block is surrounded by
    \bold{<blockquote>} and \bold{</blockquote>} in the html output,
    e.g.:

        \code
        / *!
          While the prospect of a significantly broader market is
          good news for Firstlogic, the notion also posed some
          challenges. Dave Dobson, director of technology for the La
          Crosse, Wisconsin-based company, said:

          \quotation
             As our solutions were being adopted into new
             environments, we saw an escalating need for easier
             integration with a wider range of enterprise
             applications.
          \endquotation
        * /
        \endcode

    The text in the \bold{\\quotation} block will appear in the generated HTML as:

	\code
	<blockquote>
	  <p>As our solutions were being adopted into new environments, 
	  we saw an escalating need for easier integration with a wider 
	  range of enterprise applications.</p> 
        </blockquote> 
	\endcode

    The built-in style sheet for most browsers will render the
    contents of the <blockquote> tag with left and right
    indentations. The example above would be rendered as:

          \quotation
             As our solutions were being adopted into new
             environments, we saw an escalating need for easier
             integration with a wider range of enterprise
             applications.
          \endquotation

    But you can redefine the \bold{<blockquote>} tag in your style.css file.

    This command replaces the old \\quote command. For more
    information see the \l
    {26-qdoc-commands-compatibility.html#quotation-versus-quote}
    {compatibility} section.

    \target footnote-command
    \section1 \\footnote 

    The \\footnote and \\endfootnote commands delimit a footnote.

    The footnote is rendered at the bottom of the page.

    \warning The \bold{\\footnote} and \bold{\\endfootnote} commands
    have not been implemented. The footnote is rendered as a regular
    HTML paragraph.

    \target tableofcontents-command
    \section1 \\tableofcontents 

    The \\tableofcontents command has been disabled because QDoc 
    now generates a table of contents automatically.

    The automatically generated table of contents appears in the upper
    righthand corner of the page.

    \target brief-command
    \section1 \\brief 

    The \\brief command introduces a one-sentence description of a
    class, namespace, header file, property or variable.

    The brief text is used to introduce the documentation of the
    associated object, and in lists generated using the \l
    {generatelist-command} {\\generatelist} command.

    The \\brief command can be used in two significant different ways:
    \l {brief class} {One for classes, namespaces and header files},
    and \l {brief-property} {one for properties and variables}.

    \target brief-property

    When the \\brief command is used to describe a property or a
    variable, the brief text must be a sentence fragment starting with
    "whether" (for a boolean property or variable) or starting with
    "the" (for any other property or variable).

    For example the boolean QWidget::isWindow property:

           \code
           / *!
               \property QWidget::isActiveWindow
               \brief whether this widget's window is the active window

               The active window is the window that contains the widget that
               has keyboard focus.

               When popup windows are visible, this property is true
               for both the active window \e and for the popup.

               \sa activateWindow(), QApplication::activeWindow()
           * /
           \endcode

           and the QWidget::geometry property

           \code
           / *!
               \property QWidget::geometry
               \brief the geometry of the widget relative to its parent and
               excluding the window frame

               When changing the geometry, the widget, if visible,
               receives a move event (moveEvent()) and/or a resize
               event (resizeEvent()) immediately.

               ...

              \sa frameGeometry(), rect(), ...
           * /
           \endcode

    QDoc renders this as:

           \quotation
               \raw HTML
                   <h3>geometry :
                   <a href="http://qt.nokia.com/doc/4.0/qrect.html">QRect</a>
                   </h3>
               \endraw

               This property holds the geometry of the widget relative
               to its parent and excluding the window frame.

               ...

               Access functions:
               \list
                   \o \bold {const QRect & geometry () const}
                   \o \bold {void setGeometry ( int x, int y, int w, int h )}
                   \o \bold {void setGeometry ( const QRect & )}
               \endlist

               See also \l
               {QWidget::frameGeometry()} {frameGeometry()}, \l
               {QWidget::rect()} {rect()}, ...
           \endquotation

    \target brief class

    When the \\brief command is used to describe a class, the brief
    text should be a complete sentence and must start like this:

           \code
           The <classname> class is|provides|contains|specifies...
           \endcode

    \warning The brief statement is used as the first paragraph of the
    detailed description. Do not repeat the sentence.

           \code
           / *!
               \class PreviewWindow
               \brief The PreviewWindow class is a custom widget
                      displaying the names of its currently set
                      window flags in a read-only text editor.

               The PreviewWindow class inherits QWidget. The widget
               displays the names of its window flags set with the
               setWindowFlags() function. It is also provided with a
               QPushButton that closes the window.

               ...

               \sa QWidget
           * /
           \endcode

    QDoc renders this as:

           \quotation
               \raw HTML
                   <h1>PreviewWindow Class Reference</h1>
               \endraw

               The PreviewWindow class is a custom widget displaying
               the names of its currently set window flags in a
               read-only text editor. \l {preview window} {More...}

               \raw HTML
                   <h3>Properties</h3>
               \endraw

               \list
                   \o 52 properties inherited from QWidget
                   \o 1 property inherited from QObject
               \endlist

               \raw HTML
                   <h3>Public Functions</h3>
               \endraw

               \list
                   \o \l {constructor} {PreviewWindow}(QWidget *parent = 0)
                   \o void \l {function} {setWindowFlags}(Qt::WindowFlags flags)
               \endlist

               \list
                   \o 183 public functions inherited from QWidget
                   \o 28 public functions inherited from QObject
               \endlist

               \raw HTML
                   <h3>Public Slots</h3>
               \endraw

               \list
                   \o 17 public slots inherited from QWidget
                   \o 1 public slot inherited from QObject
               \endlist

               \raw HTML
                   <h3>Additional Inherited Members</h3>
               \endraw

               \list
                   \o 1 signal inherited from QWidget
                   \o 1 signal inherited from QObject
                   \o 4 static public members inherited from QWidget
                   \o 4 static public members inherited from QObject
                   \o 39 protected functions inherited from QWidget
                   \o 7 protected functions inherited from QObject
               \endlist

               \target preview window

               \raw HTML
                   <hr />
                   <h2>Detailed Description</h2>
               \endraw
       
               The PreviewWindow class is a custom widget displaying
               the names of its currently set window flags in a
               read-only text editor.

               The PreviewWindow class inherits QWidget. The widget
               displays the names of its window flags set with the \l
               {function} {setWindowFlags()} function. It is also
               provided with a QPushButton that closes the window.

               ...

               See also QWidget.

               \raw HTML
                   <hr />
                   <h2>Member Function Documentation</h2>
               \endraw

               \target constructor
               \raw HTML
                   <h3>PreviewWindow(QWidget *parent = 0)</h3>
               \endraw

               Constructs a preview window widget with \e parent.

               \target function
               \raw HTML
                   <h3>setWindowFlags(Qt::WindowFlags flags)</h3>
               \endraw

               Sets the widgets flags using the
               QWidget::setWindowFlags() function.

               Then runs through the available window flags,
               creating a text that contains the names of the flags
               that matches the flags parameter, displaying
               the text in the widgets text editor.
           \endquotation

    Using \\brief in a \l{namespace-command}{\\namespace}:

           \code
           / *!
               \namespace Qt

               \brief The Qt namespace contains miscellaneous identifiers
               used throughout the Qt library.
           * /
           \endcode

    Using \\brief in a \l{headerfile-command}{\\headerfile}:

           \code
           / *!
               \headerfile <QtGlobal>
               \title Global Qt Declarations

               \brief The <QtGlobal> header file provides basic
               declarations and is included by all other Qt headers.

               \sa <QtAlgorithms>
           * /
           \endcode

    See also \l{property-command} {\\property}, \l{class-command}
    {\\class}, \l{namespace-command} {\\namespace} and
    \l{headerfile-command} {\\headerfile}.

    \target legalese-command
    \section1 \\legalese 

    The \\legalese and \\endlegalese commands delimit a licence agreement.

    In the generated HTML, the delimited text is surrounded by a \bold
    {<div class="LegaleseLeft">} and \bold {</div>} tags.

    For example, here is a license agreement enclosed in \\legalese
    and \\endlegalese:

        \code
	/ *!
	  \legalese
          Copyright 1996 Daniel Dardailler.

          Permission to use, copy, modify, distribute, and sell this
          software for any purpose is hereby granted without fee,
          provided that the above copyright notice appear in all
          copies and that both that copyright notice and this
          permission notice appear in supporting documentation, and
          that the name of Daniel Dardailler not be used in
          advertising or publicity pertaining to distribution of the
          software without specific, written prior permission. Daniel
          Dardailler makes no representations about the suitability of
          this software for any purpose. It is provided "as is"
          without express or implied warranty.

	  Modifications Copyright 1999 Matt Koss, under the same
          license as above.
          \endlegalese
        * / 
        \endcode

        It will appear in the generated HTML as:

       \code
	 <div class="LegaleseLeft">
	   <p>Copyright 1996 Daniel Dardailler.</p>
           <p>Permission to use, copy, modify, distribute, and sell
           this software for any purpose is hereby granted without fee,
           provided that the above copyright notice appear in all
           copies and that both that copyright notice and this
           permission notice appear in supporting documentation, and
           that the name of Daniel Dardailler not be used in
           advertising or publicity pertaining to distribution of the
           software without specific, written prior permission. Daniel
           Dardailler makes no representations about the suitability of
           this software for any purpose. It is provided "as is"
           without express or implied warranty.</p>
	  
	   <p>Modifications Copyright 1999 Matt Koss, under the same
           license as above.</p>
	 </div>
       \endcode

    If the \\endlegalese command is omitted, QDoc will process the
    \\legalese command but considers the rest of the documentation
    page as the license agreement.

    Ideally, the license text is located with the licensed code.

   Elsewhere, the documentation identified as \e{\\legalese} command
   can be accumulated using \l {generatelist-command} {\\generatelist}
   with \c {legalese-command} as the argument. This is useful for
   generating an overview of the license agreements associated with
   the source code.

    \target warning-command
    \section1 \\warning 

    The \\warning command prepends "Warning:" to the command's
    argument, in bold font.

           \code
           / *!
               Qt::HANDLE is a platform-specific handle type
               for system objects. This is  equivalent to
               \c{void *} on Windows and Mac OS X, and to
               \c{unsigned long} on X11.

               \warning Using this type is not portable.
           * /
           \endcode

    QDoc renders this as:

           \quotation
               Qt::HANDLE is a platform-specific handle type
               for system objects. This is  equivalent to
               \c{void *} on Windows and Mac OS X, and to
               \c{unsigned long} on X11.

               \warning Using this type is not portable.
           \endquotation

*/

/*!
    \page 12-0-qdoc-commands-miscellaneous.html
    \previouspage Special Content
    \contentspage Table of Contents
    \nextpage The QDoc Configuration File

    \title Miscellaneous

    These commands provide miscellaneous functions connected to the
    visual appearance of the documentation, and to the process of
    generating the documentation.

    \target expire-command
    \section1 \\expire 

    The \\expire command allows you to define an expiration
    date for your documentation.

    When using the \\expire command, QDoc will emit a warning when the
    current date is larger than the specified date. The command
    accepts one argument; the argument's format is yyyy-mm-dd. For
    example:

           \code
           / *!
               \page porting.html

               \title Porting to Qt 3.x

               \expire 2004-12-31

               This document describes porting applications from Qt
               2.x to Qt 3.x.

               The Qt 3.x series is not binary compatible with the
               2.x series.
               ...
           * /
           \endcode

    If you run QDoc on 4 July 2005, it will emit the warning

           \quotation
               porting.qdoc:6: Documentation expired 185 days ago
           \endquotation


    \target generatelist-command
    \section1 \\generatelist

    The \\generatelist command expands to a list of various
    documentation or links to documentation. Below is an example from
    the Qt Reference Documentation:

           \code
           / *!
               \page classes.html
               \title All Classes

               For a shorter list that only includes the most
               frequently used classes, see \l{Qt's Main Classes}. For
               a list of Qt 3 support classes, see \l{Qt3Support
               Classes}.

               \generatelist classes
           * /
           \endcode

    This generates the \l {All Classes} page. The command accepts the
    following arguments:

    \target table example
    \section2 \c annotatedclasses

    The \c annotatedclasses argument provides a table containing the
    names of all the classes, and a description of each class. Each
    class name is a link to the class's reference documentation. For
    example:

    \table
      \row
        \o QDial
	\o Rounded range control (like a speedometer or potentiometer)
      \row
        \o QDialog
	\o The base class of dialog windows
      \row
        \o QDir
        \o Access to directory structures and their contents
    \endtable

    A C++ class is documented with the \l {class-command} {\\class}
    command. The annotation for the class is taken from the argument
    of the class comment's \l {brief-command} {\\brief} command.

    \target list example
    \section2 \c classes

    The \c classes argument provides a complete alphabetical list of
    the classes. Each class name is a link to the class's reference
    documentation. This command is uded to generate the \l
    {classes.html} {All Classes} page this way:

    \code
    / *!
        \page classes.html
        \title All Classes
        \ingroup classlists

        \brief If you know the name of the class you want, find it here.

        This is a list of all Qt classes. For a list of the classes
        provided for compatibility with Qt3, see \l{Qt3 Support
        Classes}. For classes that have been deprecated, see the
        \l{Obsolete Classes} list.

        \generatelist classes
    * /
    \endcode

    A C++ class is documented with the \l {class-command} {\\class}
    command.

    \section2 \c classesbymodule

    When this argument is used, a second argument is required, which
    specifies the module whose classes are to be listed. QDoc
    generates a table containing those classes. Each class is listed
    with the text of its \l{brief-command} {\\brief} command.

    This command is used to generate the \l {phonon-module.html}
    {Phonon Module} page this way.

    \code
      / *!
          \page phonon-module.html
          \module Phonon
          \title Phonon Module
          \ingroup modules

          \brief The Phonon module contains namespaces and classes for multimedia functionality.

          \generatelist{classesbymodule Phonon}

	  ...

      * /
    \endcode

    Each class that is a member of the specified module must be marked
    with the \l {inmodule-command} {\\inmodule} command in its \\class
    comment.

    \section2 \c compatclasses

    The \c compatclasses argument generates a list in alphabetical
    order of the support classes.  It is normally used only to
    generate the \l {compatclasses.html} {Qt3 Support Classes} page
    this way:

    \code
    / *!
        \page compatclasses.html
        \title Qt3 Support Classes
        \ingroup classlists

        \brief These classes ease the porting of code from Qt 3 to Qt 4.

        These are the classes that Qt provides for compatibility with Qt
        3. Most of these are provided by the Qt3Support module.

        \generatelist compatclasses
    * /
    \endcode

    A support class is identified in the \\class comment with the \l
    {compat-command} {\\compat} command.

    \section2 \c functionindex

    The \c functionindex argument provides a complete alphabetical
    list of all the documented member functions. It is normally used
    only to generate the \l {functions.html} {Qt function index} page
    this way:

    \code
    / *!
        \page functions.html
        \title All Functions
        \ingroup funclists

        \brief All documented Qt functions listed alphabetically with a
        link to where each one is declared.

        This is the list of all documented member functions and global
        functions in the Qt API.  Each function has a link to the
        class or header file where it is declared and documented.

        \generatelist functionindex
    * /
    \endcode

    \section2 \c legalese

    The \c legalese argument tells QDoc to generate a complete list of
    licenses in the documentation. Each license is identified using
    the \l {legalese-command} {\\legalese} command. This command is
    used to generate the \l {licenses.html} {Qt license information}
    page this way:

    \code
    / *!
        \page licenses.html
        \title Other Licenses Used in Qt
        \ingroup licensing
        \brief Information about other licenses used for Qt components and third-party code.

        Qt contains some code that is not provided under the
        \l{GNU General Public License (GPL)},
        \l{GNU Lesser General Public License (LGPL)} or the
        \l{Qt Commercial Edition}{Qt Commercial License Agreement}, but rather under
        specific licenses from the original authors. Some pieces of code were developed
        by Nokia and others originated from third parties.
        This page lists the licenses used, names the authors, and links
        to the places where it is used.

        Nokia gratefully acknowledges these and other contributions
        to Qt. We recommend that programs that use Qt also acknowledge
        these contributions, and quote these license statements in an
        appendix to the documentation.

        See also: \l{Licenses for Fonts Used in Qt for Embedded Linux}

        \generatelist legalese
    * /
    \endcode

    \section2 \c mainclasses

    The \c mainclasses argument tells QDoc to generate an alphabetical
    list of the main classes. A class is marked as a main class by
    including a \l {mainclass-command} {\\mainclass} command in the
    \\class comment.

    \note The Qt documentation no longer includes a main classes page,
    but you can generate one for your main classes if you want it.

    \section2 \c overviews

    The \c overviews argument is used to tell QDoc to generate a list
    by concatenating the contents of all the \l {group-command}
    {\\group} pages. Qt uses it to generate the \l {overviews.html}
    {overviews} page this way:

    \code
    / *!
        \page overviews.html

        \title All Overviews and HOWTOs

        \generatelist overviews
    * /
    \endcode

    \section2 \c related

    The \c related argument is used in combination with the \l
    {group-command} {\\group} and \l {ingroup-command} {\\ingroup}
    commands to list all the overviews related to a specified
    group. For example, the page for the \l {Programming with Qt}
    {Programming with Qt} page is generated this way:

    \code
    / *!
        \group qt-basic-concepts
        \title Programming with Qt

        \brief The basic architecture of the Qt cross-platform application and UI framework.

        Qt is a cross-platform application and UI framework for
        writing web-enabled applications for desktop, mobile, and
        embedded operating systems. This page contains links to
        articles and overviews explaining key components and
        techniuqes used in Qt development.

        \generatelist {related}
    * /
    \endcode

    Each page listed on this group page contains the command:

    \code
        \ingroup qt-basic-concepts
    \endcode

    \section2 \c service

    The \c service argument tells QDoc to generate an alphabetical
    list of the services. Each service name is a link to the service's
    reference documentation.

    A service is identified with the \l {service-command} {\\service}
    command.

    \note This command and the \l {service-command} {\\service}
    command are not used in the Qt documentation.

    \target if-command
    \section1 \\if 

    The \\if command and the corresponding \\endif command
    enclose parts of a QDoc comment that only will be included if
    the condition specified by the command's argument is true.

    The command reads the rest of the line and parses it as an C++ #if
    statement.

           \code
           / *!
               \if defined(opensourceedition)

               \bold{Note:} This edition is for the development of
               \l{Qt Open Source Edition} {Free and Open Source}
               software only; see \l{Qt Commercial Editions}.

               \endif
           * /
           \endcode

    This QDoc comment will only be rendered if the \c
    opensourceedition preprocessor symbol is defined, and specified in
    the \l {defines-variable} {defines} variable in the configuration
    file to make QDoc process the code within #ifdef and #endif:

           \code
               defines = opensourceedition
           \endcode

    You can also define the preprocessor symbol manually on the
    command line. For more information see the documentation of the \l
    {defines-variable} {defines} variable.

    See also \l{endif-command} {\\endif}, \l{else-command} {\\else},
    \l {defines-variable} {defines} and \l {falsehoods-variable}
    {falsehoods}.

    \target endif-command
    \section1 \\endif 

    The \\endif command and the corresponding \\if command
    enclose parts of a QDoc comment that will be included if
    the condition specified by the \l {if-command} {\\if} command's
    argument is true.

    For more information, see the documentation of the \l {if-command}
    {\\if} command.

    See also \l{if-command} {\\if}, \l{else-command} {\\else}, \l
    {defines-variable} {defines} and \l {falsehoods-variable}
    {falsehoods}.

    \target else-command
    \section1 \\else 

    The \\else command specifies an alternative if the
    condition in the \l {if-command} {\\if} command is false.

    The \\else command can only be used within \l {if-command}
    {\\if...\\endif} commands, but is useful when there is only two
    alternatives.

           \code
           / *!
               The Qt 3 support library is provided to keep old
               source code working.

               In addition to the \c Qt3Support classes, Qt 4 provides
               compatibility functions when it's possible for an old
               API to cohabit with the new one.

               \if !defined(QT3_SUPPORT)
                   \if defined(QT3_SUPPORTWARNINGS)
                       The compiler emits a warning when a
                       compatibility function is called. (This works
                       only with GCC 3.2+ and MSVC 7.)
                   \else
                       To use the Qt 3 support library, you need to
                       have the line QT += qt3support in your .pro
                       file (qmake automatically define the
                       QT3_SUPPORT symbol, turning on compatibility
                       function support).

                       You can also define the symbol manually (e.g.,
                       if you don't want to link against the \c
                       Qt3Support library), or you can define \c
                       QT3_SUPPORT_WARNINGS instead, telling the
                       compiler to emit a warning when a compatibility
                       function is called. (This works only with GCC
                       3.2+ and MSVC 7.)
                   \endif
               \endif
           * /
           \endcode

    If the \c QT3_SUPPORT is defined, the comment will be rendered
    like this:

           \quotation
               The Qt 3 support library is provided to keep old source
               code working.

               In addition to the Qt3Support classes, Qt 4 provides
               compatibility functions when it's possible for an old
               API to cohabit with the new one.
           \endquotation

    If \c QT3_SUPPORT is not defined but \c QT3_SUPPORT_WARNINGS is
    defined, the comment will be rendered like this:

           \quotation
               The Qt 3 support library is provided to keep old source
               code working.

               In addition to the Qt3Support classes, Qt 4 provides
               compatibility functions when it's possible for an old
               API to cohabit with the new one.

               The compiler emits a warning when a compatibility
               function is called. (This works only with GCC 3.2+ and
               MSVC 7.)
           \endquotation

           If none of the symbols are defined, the comment will be
           rendered as

           \quotation
               The Qt 3 support library is provided to keep old
               source code working.

               In addition to the \c Qt3Support classes, Qt 4 provides
               compatibility functions when it's possible for an old
               API to cohabit with the new one.

               To use the Qt 3 support library, you need to have the
               line QT += qt3support in your .pro file (qmake
               automatically define the QT3_SUPPORT symbol, turning on
               compatibility function support).

               You can also define the symbol manually (e.g., if you
               don't want to link against the \c Qt3Support library),
               or you can define \c QT3_SUPPORT_WARNINGS instead,
               telling the compiler to emit a warning when a
               compatibility function is called. (This works only with
               GCC 3.2+ and MSVC 7.)
           \endquotation

           See also \l{if-command} {\\if}, \l{endif-command} {\\endif}, \l
           {defines-variable} {defines} and \l {falsehoods-variable}
           {falsehoods}.

    \target include-command
    \section1 \\include 

    The \\include command sends all or part of the file specified by
    its first argument to the QDoc input stream to be processed as a
    qdoc comment snippet.  This command is often assigned the alias,
    \e {input}, in the QDoc configuration file, e.g. \e {alias.include
    = input}.

    The command is useful when some snippet of commands and text is to
    be used in multiple places in the documentation. In that case,
    move the snippet into a separate file and use the \\include
    command wherever you want to insert the snippet into the
    documentation. To prevent QDoc from reading the file as a
    stand-alone page of documentation, we recommend that you use the
    \c .qdocinc extension for these \e {include} files.

    The command can have either one or two arguments. The first
    argument is always a file name. The contents of the file must be
    QDoc input, i.e. a sequence of QDoc commands and text, but without
    the enclosing qdoc comment \c{/}\c{*!}  ... \c{*}\c{/} delimeters.
    If you want to include the entire named file, don't use the second
    argument. If you want to include only part of the file, see the
    \l{2-argument-form}{two argument form} below. Here is an example
    of the one argument form:

            \code
            / *!
                \page corefeatures.html
                \title Core Features

                \include examples/signalandslots.qdocinc
                \include examples/objectmodel.qdocinc
                \include examples/layoutmanagement.qdocinc
            * /
            \endcode

    Here are links to the \c .qdocinc files used above:
    \l{signalandslots.qdocinc}, \l{objectmodel.qdocinc},
    \l{layoutmanagement.qdocinc}. QDoc renders this page as:

            \quotation
                \raw HTML
                <h1>Core Features</h1>
                \endraw

                \input examples/signalandslots.qdocinc
                \input examples/objectmodel.qdocinc
                \input examples/layoutmanagement.qdocinc
            \endquotation

    \target 2-argument-form}
    \section2 \\include filename snippet-identifier

    It is kind of a pain to make a separate \c .qdocinc file for every
    QDoc include snippet you want to use in multiple places in the
    documentation, especially given that you probably have to put the
    copyright/license notice in every one of these files. So if you
    have lots of these include snippets, you can put them all in a
    single file if you want, and surround each one with:
    \code
        //! [snippet-id1]

           QDoc commands and text...

	//! [snippet-id1]

        //! [snippet-id2]

           More QDoc commands and text...

	//! [snippet-id2]
    \endcode

    Then you can use the two-argument form of the command:

    \code
        \input examples/signalandslots.qdocinc snippet-id2
        \input examples/objectmodel.qdocinc another-snippet-id
    \endcode

    It works as expected. The sequence of QDoc commands and text found
    between the two tags with the same name as the second argument is
    sent to the QDoc input stream. You can even nest these snippets,
    although it's not clear why you would want to do that.

    \target meta-command
    \section1 \\meta 

    The \\meta command is the QDoc equivalent to the HTML
    \c meta tag.

    The command accepts two arguments: The first argument (the
    following word) is equivalent to the HTML meta tag's \e name
    variable, and the second argument (the rest of the line) is
    equivalent to the tag's \e contents variable.

           \code
           / *!
               \meta author Summerfield

               \section1 Automatic Dialogs

               \abstract
                   This article shows how to maintain sets of
                   "attributes" (QVariant values), and how to allow
                   users to view and edit them using dialogs that are
                   created dynamically based on the attributes and
                   their types.
               \endabstract

               The Attributes class described in this article holds a
               set of QVariants, and can create a dialog to present
               the QVariants to the user in an appropriate way.

               ...
           * /
           \endcode

    QDoc renders this as:

           \code
           <head>
                ...
                <meta name="author" content="Summerfield" />
                ...
           </head>
           \endcode

    \target omit-command
    \section1 \\omit 

    The \\omit command and the correspondning \\endomit command
    delimit parts of the documentation that you want QDoc to skip. For
    example:

            \code
            / *!
                \table
                \row
                    \o Basic Widgets
                    \o Basic GUI widgets such as buttons, comboboxes
                       and scrollbars.

                \omit
                \row
                    \o Component Model
                    \o Interfaces and helper classes for the Qt
                       Component Model.
                \endomit

                \row
                    \o Database Classes
                    \o Database related classes, e.g. for SQL databases.
                \endtable
            * /
            \endcode

    QDoc renders this as:

            \raw HTML
                <table align="center" cellpadding="2"
                    cellspacing="1" border="0">

                <tr valign="top" bgcolor="#d0d0d0">
                    <td>Basic Widgets</td>
                    <td>Basic GUI widgets such as buttons, comboboxes
                       and scrollbars.</td>
                </tr>

                <tr valign="top" bgcolor="#c0c0c0">
                    <td>Database Classes</td>
                    <td>Database related classes, e.g. for SQL databases.</td>
                </tr>
                </table>
            \endraw

    \target raw-command
    \section1 \\raw \span {class="newStuff"} {(avoid)} 

    The \\raw command and the corresponding
    \\endraw command delimit a block of raw mark-up language code.

    \note Avoid using this command if possible, because it generates
    DITA XML code that causes problems. If you are trying to generate
    special table or list behavior, try to get the behavior you want
    using the \l {span-command} {\\span} and \l {div-command} {\\div}
    commands in your \l {table-command} {\\table} or \l {list-command}
    {\\list}.
 
    The command takes an argument specifying the code's format;
    currently the only supported format is HTML.

    The \\raw command is useful if you want some special HTML effects
    in your documentation.

           \code
           / *!
               Qt has some predefined QColor objects.

               \raw HTML
               <style type="text/css" id="colorstyles">
               #color-blue { background-color: #0000ff; color: #ffffff }
               #color-darkBlue { background-color: #000080; color: #ffffff }
               #color-cyan { background-color: #00ffff; color: #000000 }
               </style>

               <p>
               <tt id="color-blue">Blue(#0000ff)</tt>,
               <tt id="color-darkBlue">dark blue(#000080)</tt> and
               <tt id="color-cyan">cyan(#00ffff)</tt>.
	       </p>
               \endraw
           * /
           \endcode

    QDoc renders this as:

           \quotation
               Qt has some predefined QColor objects.

               \raw HTML
               <style type="text/css" id="colorstyles">
               #color-blue { background-color: #0000ff; color: #ffffff }
               #color-darkBlue { background-color: #000080; color: #ffffff }
               #color-cyan { background-color: #00ffff; color: #000000 }
               </style>

               <p>
               <tt id="color-blue">Blue(#0000ff)</tt>,
               <tt id="color-darkBlue">dark blue(#000080)</tt> and
               <tt id="color-cyan">cyan(#00ffff)</tt>.
	       </p>
               \endraw
           \endquotation

    \note But you can achieve the exact same thing using qdoc
    commands. In this case, all you have to do is include the color
    styles in your style.css file. Then you can write:

	   \code
           \tt {\span {id="color-blue"} {Blue(#0000ff)}},
           \tt {\span {id="color-darkBlue"} {dark blue(#000080)}} and
           \tt {\span {id="color-cyan"} {cyan(#00ffff)}}.
	   \endcode

	   ...which is rendered again as:

           \tt {\span {id="color-blue"} {Blue(#0000ff)}},
           \tt {\span {id="color-darkBlue"} {dark blue(#000080)}} and
           \tt {\span {id="color-cyan"} {cyan(#00ffff)}}.

    \target unicode-command
    \section1 \\unicode 

    The \\unicode command allows you to insert an arbitrary Unicode
    character in the document.

    The command takes an argument specifying the character as an
    integer. By default, base 10 is assumed, unless a '0x' or '0'
    prefix is specified (for base 16 and 8, respectively). For
    example:

           \code
                O G\unicode{0xEA}nio e as Rosas

                \unicode 0xC0 table en famille avec 15 \unicode 0x20AC par jour

                \unicode 0x3A3 \e{a}\sub{\e{i}}
           \endcode

    QDoc renders this as:

           \quotation
                O G\unicode{0xEA}nio e as Rosas

                \unicode 0xC0 table en famille avec 15 \unicode 0x20AC par jour

                \unicode 0x3A3 \e{a}\sub{\e{i}}
           \endquotation
*/

/*!
    \page 12-1-signalandslots.html
    \previouspage Miscellaneous
    \contentspage Table of Contents

    \title signalandslots.qdocinc

    \quotefile examples/signalandslots.qdocinc
*/

/*!
    \page 12-2-objectmodel.html
    \previouspage Miscellaneous
    \contentspage Table of Contents

    \title objectmodel.qdocinc

    \quotefile examples/objectmodel.qdocinc
*/

/*!
    \page 12-3-layoutmanagement.html
    \previouspage Miscellaneous
    \contentspage Table of Contents

    \title layoutmanagement.qdocinc

    \quotefile examples/layoutmanagement.qdocinc
*/

/*!
    \page 13-qdoc-commands-topics.html
    \previouspage Command Index
    \contentspage Table of Contents
    \nextpage Context Commands

    \title Topic Commands

    A topic command tells QDoc which source code element is being
    documented. Some topic commands allow you to create documentation
    pages that aren't tied to any underlying source code element.

    When QDoc processes a QDoc comment, it tries to connect the
    comment to an element in the source code by first looking for a
    topic command that names the source code element. If there is no
    topic command, QDoc tries to connect the comment to the source
    code element that immediately follows the comment. If it can't do
    either of these and if there is no topic command that indicates
    the comment does not have an underlying source code element (e.g.
    \l{page-command} {\\page}), then the comment is discarded.

    \target topic argument

    The name of the thing being documented is the unique argument for
    each topic command. The naming convention is to use the complete
    name.

    \code
        \enum QComboBox::InsertPolicy
    \endcode

    The \l {fn-command} {\\fn} command is a special case. For the \l
    {fn-command} {\\fn} command, use the function's signature
    including the class qualifier.

    \code
        \fn void QGraphicsWidget::setWindowFlags(Qt::WindowFlags wFlags)
    \endcode

    A topic command can appear anywhere in a comment but must stand
    alone on its own line. Best practice is to put the topic commend
    at the top of the comment. If the argument spans several lines,
    make sure that each line (except the last one) is ended with a
    backslash. In addition QDoc counts parentheses, which means that
    if it encounters a '(' it considers everything until the closing
    ')' as its argument.

    If a topic command is repeated with different arguments, the
    same documentation will appear for both the units.

    \code
    / *!
        \fn void PreviewWindow::setWindowFlags()
        \fn void ControllerWindow::setWindowFlags()

        Sets the widgets flags using the QWidget::setWindowFlags()
        function.

        Then runs through the available window flags, creating a text
        that contains the names of the flags that matches the flags
        parameter, displaying the text in the widgets text editor.
    * /
    \endcode

    The \c PreviewWindow::setWindowFlags() and \c
    ControllerWindow::setWindowFlags() functions will get the same
    documentation.

    \target class-command
    \section1 \\class 

    The \\class command is for documenting a C++ class. The argument
    is the complete name of the class. The command tells QDoc that a
    class is part of the public API, and lets you enter a detailed
    description.

    \code
    / *!
        \class QMap::iterator

        \brief The QMap::iterator class provides an STL-style
        non-const iterator for QMap and QMultiMap.

        QMap features both \l{STL-style iterators} and
        \l{Java-style iterators}. The STL-style iterators ...
    * /
    \endcode

    The HTML documentation for the named class is written to a
    \c{.html} file named from the class name, in lower case, and with
    the double colon qulifier(s) replaced with '-'. For example, the
    documentation for the \c QMap::Iterator class is written to \c
    qmap-iterator.html.

    \target framework

    The file contains the class description from the \\class comment,
    plus the documentation generated from QDoc comments for all the
    class members, i.e. a list of the class's types, properties,
    functions, signals, and slots.

    In addition to the detailed description of the class, the \\class
    comment typically contains a \l {brief-command} {\\brief} command
    and one or more \l{Markup Commands}. See the \\class command for
    any of the Qt class for examples. Here is a very simple example:

    \code
    / *!
        \class PreviewWindow
        \brief The PreviewWindow class is a custom widget
               displaying the names of its currently set
               window flags in a read-only text editor.

        \ingroup miscellaneous

        The PreviewWindow class inherits QWidget. The widget
        displays the names of its window flags set with the \l
        {function} {setWindowFlags()} function. It is also
        provided with a QPushButton that closes the window.

        ...

        \sa QWidget
    * /
    \endcode

    The way QDoc renders this \\class will depend a lot on your \c
    {style.css} file, but the general outline of the class reference
    page will look like this:

    \quotation
        \raw HTML
            <h1>PreviewWindow Class Reference</h1>
        \endraw

        The PreviewWindow class is a custom widget displaying
        the names of its currently set window flags in a
        read-only text editor. \l {preview window} {More...}

        \raw HTML
            <h3>Properties</h3>
        \endraw

        \list
            \o 52 properties inherited from QWidget
            \o 1 property inherited from QObject
        \endlist

        \raw HTML
            <h3>Public Functions</h3>
        \endraw

        \list
            \o \l {constructor} {PreviewWindow}(QWidget *parent = 0)
            \o void \l {function} {setWindowFlags}(Qt::WindowFlags flags)
        \endlist

        \list
            \o 183 public functions inherited from QWidget
            \o 28 public functions inherited from QObject
        \endlist

        \raw HTML
           <h3>Public Slots</h3>
        \endraw

        \list
            \o 17 public slots inherited from QWidget
            \o 1 public slot inherited from QObject
        \endlist

        \raw HTML
            <h3>Additional Inherited Members</h3>
        \endraw

        \list
            \o 1 signal inherited from QWidget
            \o 1 signal inherited from QObject
            \o 4 static public members inherited from QWidget
            \o 4 static public members inherited from QObject
            \o 39 protected functions inherited from QWidget
            \o 7 protected functions inherited from QObject
        \endlist

        \target preview window

        \raw HTML
            <hr />
            <h2>Detailed Description</h2>
        \endraw

        The PreviewWindow class is a custom widget displaying
        the names of its currently set window flags in a
        read-only text editor.

        The PreviewWindow class inherits QWidget. The widget
        displays the names of its window flags set with the \l
        {function} {setWindowFlags()} function. It is also
        provided with a QPushButton that closes the window.

        ...

        See also QWidget.

        \raw HTML
            <hr />
            <h2>Member Function Documentation</h2>
        \endraw

        \target constructor
        \raw HTML
           <h3>PreviewWindow(QWidget *parent = 0)</h3>
        \endraw

        Constructs a preview window widget with \e parent.

        \target function
        \raw HTML
            <h3>setWindowFlags(Qt::WindowFlags flags)</h3>
        \endraw

        Sets the widgets flags using the
        QWidget::setWindowFlags() function.

        Then runs through the available window flags,
        creating a text that contains the names of the flags
        that matches the flags parameter, displaying
        the text in the widgets text editor.
    \endquotation

    \target enum-command
    \section1 \\enum 

    The \\enum command is for documenting a C++ enum type. The
    argument is the full name of the enum type.

    The enum values are documented in the \\enum comment using the \l
    {value-command} {\\value} command. If an enum value is not
    documented with \\value, QDoc emits a warning. These warnings can
    be avoided using the \l {omitvalue-command} {\\omitvalue} command
    to tell QDoc that an enum value should not be documented. The enum
    documentation will be included on the class reference page, header
    file page, or namespace page where the enum type is defined. For
    example, consider the enum type \c {Corner} in the Qt namespace:

    \code
        enum Corner {
            TopLeftCorner = 0x00000,
            TopRightCorner = 0x00001,
            BottomLeftCorner = 0x00002,
            BottomRightCorner = 0x00003
        #if defined(QT3_SUPPORT) && !defined(Q_MOC_RUN)
            ,TopLeft = TopLeftCorner,
            TopRight = TopRightCorner,
            BottomLeft = BottomLeftCorner,
            BottomRight = BottomRightCorner
        #endif
        };
    \endcode

    This enum can be cocumented this way:

    \code
    / *!
        \enum Qt::Corner

        This enum type specifies a corner in a rectangle:

        \value TopLeftCorner
               The top-left corner of the rectangle.
        \value TopRightCorner
               The top-right corner of the rectangle.
        \value BottomLeftCorner
               The bottom-left corner of the rectangle.
        \value BottomRightCorner
               The bottom-right corner of the rectangle.

        \omitvalue TopLeft
        \omitvalue TopRight
        \omitvalue BottomLeft
        \omitvalue BottomRight
    * /
    \endcode

    Note the inclusion of the namespace qualifier. QDoc will render
    this enum type in \c {qt.html} like this:

           \quotation
           \raw HTML
               <h3 class="fn"><a name="Corner-enum"></a>enum Qt::Corner</h3>

               <p>This enum type specifies a corner in a rectangle:</p>

               <table border="1" cellpadding="2" cellspacing="1" width="100%">
               <tr>
               <th width="25%">Constant</th>
               <th width="15%">Value</th>
               <th width="60%">Description</th>
               </tr>

               <tr>
               <td valign="top"><tt>Qt::TopLeftCorner</tt></td>
               <td align="center" valign="top"><tt>0x00000</tt></td>
               <td valign="top">The top-left corner of the rectangle.</td>
               </tr>

               <tr>
               <td valign="top"><tt>Qt::TopRightCorner</tt></td>
               <td align="center" valign="top"><tt>0x00001</tt></td>
               <td valign="top">The top-right corner of the rectangle.</td>
               </tr>

               <tr>
               <td valign="top"><tt>Qt::BottomLeftCorner</tt></td>
               <td align="center" valign="top"><tt>0x00002</tt></td>
               <td valign="top">The bottom-left corner of the rectangle.</td>
               </tr>

               <tr>
               <td valign="top"><tt>Qt::BottomRightCorner</tt></td>
               <td align="center" valign="top"><tt>0x00003</tt></td>
               <td valign="top">The bottom-right corner of the rectangle.</td>
               </tr>

               </table>
           \endraw
           \endquotation

    See also \l {value-command} {\\value} and \l {omitvalue-command} {\\omitvalue}.

    \target example-command
    \section1 \\example 

    The \\example command is for documenting an example. The argument
    is the example's path relative to omne of the paths listed in the
    \l {exampledirs-variable} {exampledirs} variable in the QDoc
    configuration file.

    The documentation page will be output to \c {path-to-example}.html.  
    QDoc will add a list of all the example's source files at the top 
    of the page.

    For example, if \l {exampledirs-variable} {exampledirs} contains
    \c $QTDIR/examples/widgets/imageviewer, then

    \code
    / *!
        \example widgets/imageviewer
        \title ImageViewer Example
        \subtitle

        The example shows how to combine QLabel and QScrollArea
        to display an image.

        ...
    * /
    \endcode

    QDoc renders this example in widgets-imageviewer.html:

    \quotation
        \raw HTML
        <center><h1>Image Viewer Example</h1></center>
        \endraw

        Files:
        \list
        \o \l{http://qt.nokia.com/doc/4.0/widgets-imageviewer-imageviewer-cpp.html}
           {widgets/imageviewer/imageviewer.cpp}
        \o \l{http://qt.nokia.com/doc/4.0/widgets-imageviewer-imageviewer-h.html}
           {widgets/imageviewer/imageviewer.h}
        \o \l{http://qt.nokia.com/doc/4.0/widgets-imageviewer-main-cpp.html}
           {widgets/imageviewer/main.cpp}
        \endlist

        The example shows how to combine QLabel and QScrollArea
        to display an image.

        ...
    \endquotation

    \target externalpage-command
    \section1 \\externalpage 

    The \\externalpage command assigns a title to an external URL.

    \code
    / *!
        \externalpage http://doc.trolltech.com/4.3/qtopiacore.html
        \title Qtopia Core
    * /
    \endcode

    This allows you to include a link to the external page in your
    documentation this way:

    \code
    / *!
        The broad scope of the \l {Qtopia Core} API enables it to
        be used across a wide variety of development projects.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        The broad scope of the \l
        {http://doc.trolltech.com/4.3/qtopiacore.html} {Qtopia
        Core} API enables it to be used across a wide variety
        of development projects.
    \endquotation

    To achieve the same result without using the \\externalpage
    command, you would have to hard code the adress into your
    documentation:

    \code
    / *!
        The broad scope of the \l
        {http://doc.trolltech.com/4.3/qtopiacore.html} {Qtopia
        Core} API enables it to be used across a wide variety
        of development projects.
    * /
    \endcode

    The \\externalpage command makes it easier to maintain the
    documentation. If the adress changes, you only need to change the
    argument of the \\externalpage command.

    \target fn-command
    \section1 \\fn (function)

    The \\fn command is for documenting a function. The argument is
    the function's signature, including its return type, const-ness,
    and list of formal arguments with types. If the named function
    doesn't exist, QDoc emits a warning.

    \note The \\fn command is QDoc's default command, i.e. when no
    topic command can be found in a QDoc comment, QDoc tries to tie
    the documentation to the following code as if it is the
    documentation for a function. Hence, it is normally not necessary
    to include this command when documenting a function, if the
    function's QDoc comment is written immediately above the function
    implementation in the \c .cpp file. But it must be present when
    documenting an inline function in the \c .cpp file that is
    implemented in the \c .h file.

    \code
    / *!
        \fn bool QToolBar::isAreaAllowed(Qt::ToolBarArea area) const

        Returns true if this toolbar is dockable in the given
        \a area; otherwise returns false.
    * /
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
           <h3>bool QToolBar::isAreaAllowed(Qt::ToolBarArea area) const
           </h3>
        \endraw

        Returns true if this toolbar is dockable in the given
        \a area; otherwise returns false.
    \endquotation

    See also \l {overload-command} {\\overload}.

    \target group-command
    \section1 \\group 

    The \\group command creates a separate page that lists the classes
    belonging to the group. The argument is the group name. 

    A class is included in a group by using the \l {ingroup-command}
    {\\ingroup} command. Overview pages can also be related to a group
    using the same command, but the list of overview pages must be
    requested explicitly using the \l {generatelist-command}
    {\\generatelist} command (see example below).

    The \\group command is typically followed by a \l {title-command}
    {\\title} command and a short introduction to the group.  The
    HTML page for the group is written to a \c {.html} file put in
    <lower-case>\e{group}.html.

    Each class name is listed as a link to the class reference page
    followed by the text from the class's \l {brief-command} {\\brief}
    texts.

    \code
    / *!
        \group io

        \title Input/Output and Networking

        These classes are used to handle input and output to
        and from external devices, processes, files etc. as
        well as manipulating files and directories.
    * /
    \endcode

    QDoc generates a group page in \c{io.html} that will look
    like this:

    \quotation
         \raw HTML

         <h1>Input/Output and Networking</h1>

         <p>These classes are used to handle input and output
         to and from external devices, processes, files etc. as
         well as manipulating files and directories.</p>

         <p>
         <table width="100%">
             <tr valign="top" bgcolor="#e0e0e0">
             <td><b>
             <a href="http://qt.nokia.com/doc/4.0/qabstractsocket.html">QAbstractSocket</a>
             </b></td>
             <td>
             The base functionality common to all socket types
             </td></tr>

             <tr valign="top" bgcolor="#e0e0e0">
             <td><b>
             <a href="http://qt.nokia.com/doc/4.0/qbuffer.html">QBuffer</a>
             </b></td>
             <td>
             QIODevice interface for a QByteArray
             </td></tr>

             <tr valign="top" bgcolor="#e0e0e0">
             <td><b>
             <a href="http://qt.nokia.com/doc/4.0/qclipboard.html">QClipboard</a>
             </b></td>
             <td>
             Access to the window system clipboard
             </td></tr>
         </table>
         \endraw
    \endquotation

    Note that overview pages related to the group, must be listed
    explicitly using the \l {generatelist-command} {\\generatelist}
    command with the \c related argument.

    \code
    / *!
        \group architecture

        \title Architecture

        These documents describe aspects of Qt's architecture
        and design, including overviews of core Qt features and
        technologies.

        \generatelist{related}
    * /
    \endcode

    See also \l {ingroup-command} {\\ingroup} and \l
    {generatelist-command} {\\generatelist}.

    \target headerfile-command
    \section1 \\headerfile 

    The \\headerfile command is for documenting the global functions,
    types and macros that are declared in a header file but not in a
    namespace. The argument is the name of the header file.  The HTML
    page is written to a \c {.html} file constructed from the header 
    file aregument.

    The documentation for a function, type, or macro that is declared
    in the header file being documented is included in the header file
    page using the \l {relates-command} {\\relates} command.

    If the argument doesn't exist as a header file, the \\headerfile
    command creates a documentation page for the header file anyway.

           \code
           / *!
               \headerfile <QtAlgorithms>

               \title Generic Algorithms

               \brief The <QtAlgorithms> header file provides
                generic template-based algorithms.

               Qt provides a number of global template functions in \c
               <QtAlgorithms> that work on containers and perform
               well-know algorithms.
           * /
           \endcode

    QDoc generates a header file page \c{qtalgorithms.html} that looks
    like this:

           \quotation
               \raw HTML
               <center><h1>&lt;QtAlgorithms&gt; -
                           Generic Algorithms</h1></center>
               <p>The <QtAlgorithms> header file provides generic
               template-based algorithms.
               <a href="13-qdoc-commands-topics.html#header-command">More...</a>
               </p>

               <h3>Functions</h3>
               <ul>
               <li>RandomAccessIterator
               <a href="http://qt.nokia.com/doc/4.0/qlineedit.html#EchoMode-enum">qBinaryFind</a></b>
               (RandomAccessIterator begin, RandomAccessIterator end,
               const T & value)</li>
               <li>...</li></ul>
               <hr />
               \endraw

               \target header

               \raw HTML
               <h2>Detailed Description</h2>
               <p>The <QtAlgorithms> header file provides generic
               template-based algorithms. </p>
               \endraw

               Qt provides a number of global template functions in \c
               <QtAlgorithms> that work on containers and perform
               well-know algorithms.

               ...
           \endquotation

    \target macro-command
    \section1 \\macro 

    The \\macro command is for documententin a C++ macro. The argument
    is the macro in one of three styles: function-like macros like
    Q_ASSERT(), declaration-style macros like Q_PROPERTY(), and macros
    without parentheses like Q_OBJECT.

    The \\macro comment must contain a \l {relates-command}
    {\\relates} command that attaches the macro comment to a class,
    header file, or namespace. Otherwise, the documentation will be
    lost. Here are three example macro comments followed by what they
    might look like in \c {qtglobal.html} or \c {qobject.html}:

    \code
    / *!
        \macro void Q_ASSERT(bool test)
        \relates <QtGlobal>

        Prints a warning message containing the source code
        file name and line number if \a test is false.

        ...

        \sa Q_ASSERT_X(), qFatal(), {Debugging Techniques}
    * /
    \endcode

    \quotation
        \raw HTML
        <h3>void Q_ASSERT ( bool <i>test</i> )</h3>
        \endraw

        Prints a warning message containing the source code
        file name and line number if \a test is false.

        ...

        See also Q_ASSERT_X(), qFatal() and \l {Debugging Techniques}.
 
   \endquotation

    \code
    / *!
        \macro Q_PROPERTY(...)
        \relates QObject

        This macro declares a QObject property. The syntax is:

        ...

        \sa {Qt's Property System}
    * /
    \endcode

    \quotation
        \raw HTML
        <h3>Q_PROPERTY ( ... )</h3>
        \endraw

        This macro declares a QObject property. The syntax is:

        ...

        See also \l {Qt's Property System}.
    \endquotation

    \code
    / *!
        \macro Q_OBJECT
        \relates QObject

        The Q_OBJECT macro must appear in the private section
        of a class definition that declares its own signals and
        slots or that uses other services provided by Qt's
        meta-object system.

        ...

        \sa {Meta-Object System}, {Signals and Slots}, {Qt's
        Property System}
    * /
    \endcode

    \quotation
        \raw HTML
        <h3>Q_OBJECT</h3>
        \endraw

        The Q_OBJECT macro must appear in the private section
        of a class definition that declares its own signals and
        slots or that uses other services provided by Qt's
        meta-object system.

        ...

        See also \l {Meta-Object System}, \l {Signals &
        Slots} and \l {Qt's Property System}.
    \endquotation

    \target module-command
    \section1 \\module 

    The \\module creates a page that lists the classes belonging to
    the module specified by the command's argument.  A class included
    in the module by including the \l {inmodule-command} {\\inmodule}
    command in the \\class comment.

    The \\module command is typically followed by a \l {title-command}
    {\\title} and a \l {brief-command} {\\brief} command. Each class
    is listed as a link to the class reference page followed by the
    text from the class's \l {brief-command} {\\brief} command. For
    example:

    \code
    / *!
        \module QtNetwork

        \title QtNetwork Module

        \brief The QtNetwork module offers classes that allow
        you to write TCP/IP clients and servers.

        The network module provides classes to make network
        programming easier and portable. It offers both
        high-level classes such as QHttp and QFtp that
        implement specific application-level protocols, and
        lower-level classes such as QTcpSocket, QTcpServer, and
        QUdpSocket.
    * /
    \endcode

    QDoc renders this in \c {qtnetwork.html} like this:

           \quotation
               \raw HTML
               <h1><center>QtNetwork Module</center></h1>
               \endraw

               The QtNetwork module offers classes that allow you to
               write TCP/IP clients and servers.\l {module
               details} {More...}

               \raw HTML
               <p>
               <table width="100%">
                   <tr valign="top" bgcolor="#d0d0d0">
                   <td><b>
                   <a href="http://qt.nokia.com/doc/4.0/qabstractsocket.html">QAbstractSocket</a>
                   </b></td>
                   <td>
                   The base functionality common to all socket types
                   </td></tr>

                   <tr valign="top" bgcolor="#d0d0d0">
                   <td><b>
                   <a href="http://qt.nokia.com/doc/4.0/qftp.html">QFtp</a>
                   </b></td>
                   <td>
                   Implementation of the FTP protocol
                   </td></tr>

                   <tr valign="top" bgcolor="#d0d0d0">
                   <td>...</td>
                   <td>...</td>
                   </tr>
               </table>

               <p><hr /></p>
               \endraw

               \target module details

               \raw HTML
               <h2>Detailed Description</h2>

               <p>
               The QtNetwork module offers classes that allow you to
               write TCP/IP clients and servers.
               </p>

               <p>
               The network module provides classes to make network
               programming easier and portable. It offers both
               high-level classes such as QHttp and QFtp that
               implement specific application-level protocols, and
               lower-level classes such as QTcpSocket, QTcpServer, and
               QUdpSocket.
               </p>
               \endraw

               ...

           \endquotation

    See also \l {inmodule-command} {\\inmodule}

    \target namespace-command
    \section1 \\namespace 

    The \\namespace command is for documenting the contents of the C++
    namespace named as its argument. The documentation outline QDoc
    generates for a namespace is similar to the outline it generates
    for a C++ class.

    \code
    / *!
        \namespace Qt

        \brief The Qt namespace contains miscellaneous
        identifiers used throughout the Qt library.
    * /
    \endcode

    QDoc renders this in \c{qt.html} like this:

           \quotation
               \raw HTML
               <center><h1>Qt Namespace Reference</h1></center>
               <p>The Qt namespace contains miscellaneous
               identifiers used throughout the Qt library.
               <a href="13-qdoc-commands-topics.html#name">More...</a>
               </p>

               <pre>#include &lt;Qt&gt;</pre>
               <ul>
               <li>
               <a href="http://qt.nokia.com/doc/4.0/qt-qt3.html">
                   Qt 3 support members</a></li>
               </ul>


               <h3>Types</h3>
               <ul>
               <li>flags
               <a href="http://qt.nokia.com/doc/4.0/qt.html#AlignmentFlag-enum">Alignment</a></b></li>
               <li>...</li></ul>
               <hr />
               \endraw

               \target name

               \raw HTML
               <h2>Detailed Description</h2>
               <p>The Qt namespace contains miscellaneous identifiers
               used throughout the Qt library.</p>
               \endraw

               ...
           \endquotation

    \target page-command
    \section1 \\page 

    The \\page command is for creating a stand-alone documentation
    page.  The argument is the name of the file where QDoc should
    store the page. The page title is set using the \l {title-command}
    {\\title} command.

           \code
           / *!
               \page aboutqt.html

               \title About Qt

               Qt by Trolltech is a C++ toolkit for cross-platform GUI
               application development. Qt provides single-source
               portability across Microsoft Windows, Mac OS X, Linux,
               and all major commercial Unix variants. (A version of
               Qt 4 for embedded Linux will be available in
               August/September 2005.)

               Qt provides application developers with all the
               functionality needed to build applications with
               state-of-the-art graphical user interfaces. Qt is fully
               object-oriented, easily extensible, and allows true
               component programming.

               ...
            * /
            \endcode

    QDoc renders this page in \c {aboutqt.html}.

    \target property-command
    \section1 \\property 

    The \\property command is for documenting a Qt property. The
    argument is the full property name.

    A property is defined using the Q_PROPERTY() macro. The macro
    takes as arguments the property's name and its set, reset and get
    functions.

    \code
    Q_PROPERTY(QString state READ state WRITE setState)
    \endcode

    The set, reset and get functions don't need to be documented,
    documenting the property is sufficient. QDoc will generate a list
    of the access function that will appear in the property
    documentation which in turn will be located in the documentation
    of the class that defines the property.

    The \\property command comment typically includes a \l
    {brief-command} {\\brief} command. Forproperties the \l
    {brief-command} {\\brief} command's argument is a sentence
    fragment that will be included in a one line description of the
    property. The command follows the same rules for the \l
    {brief-property} {description} as the \l {variable-command}
    {\\variable} command.

    \code
    / *!
        \property QPushButton::flat
        \brief whether the border is disabled

        This property's default is false.
    * /
    \endcode

    QDoc includes this in \c {qpushbutton.html} like this:

    \quotation
        \raw HTML
        <h3>flat : bool</h3>
        \endraw

        This property holds whether the border is disabled.

        This property's default is false.

        Access functions:

        \list
        \o \bold { bool isFlat () const}
        \o \bold { void setFlat ( bool )}
        \endlist

    \endquotation

    \code
    / *!
        \property QWidget::width
        \brief the width of the widget excluding any window frame

        See the \l {Window Geometry} documentation for an
        overview of window geometry.

        \sa geometry, height, size
    * /
    \endcode

    QDoc includes this in \c {qwidget.html} like this:

    \quotation
        \raw HTML
        <h3>width : const int</h3>
        \endraw

        This property holds the width of the widget excluding
        any window frame.

        See the \l {Window Geometry} documentation for an
        overview of window geometry.

        Access functions:

        \list
        \o \bold { int width () const}
        \endlist

        See also \l{QWidget::geometry} {geometry},
        \l{QWidget::height} {height}, and \l{QWidget::size} {size}.
    \endquotation

    \target service-command
    \section1 \\service 

    The \\service command tells QDoc that a class is a service class
    and names the service. The command takes two arguments, the name
    of the class and the name of the service. Currently, this command 
    is not used in the Qt documentation.

     \code
         / *!
             \service TimeService Time
             ...
         * /
         class TimeService : public QCopObjectService
         {
             ...
         }
     \endcode

     See also \l {class-command} {\\class} and \l
     {generatelist-command} {\\generatelist}.

    \target qmlattachedproperty-command
    \section1 \\qmlattachedproperty \span {class="newStuff"} {(new)}

    The \\qmlattachedproperty command is for documenting a QML
    property that will be attached to some QML element type. See
    \l{http://doc.trolltech.com/4.7/qdeclarativeintroduction.html#attached-properties}
    {Attached Properties}. The argument is the rest of the line. The 
    argument text should be the property type, followed by the QML 
    element name where the property is being declared, the \c{::}
    qualifier, and finally the property name. If we have a QML
    attached property named \c isCurrentItem in QML element \c ListView,
    and the property has type \c {bool}, the \\qmlattachedproperty for 
    it would look like this:

    \code
    / *!
        \qmlattachedproperty bool ListView::isCurrentItem
        This attached property is true if this delegate is the current 
	item; otherwise false.

        It is attached to each instance of the delegate.

        This property may be used to adjust the appearance of the current 
	item, for example:

        \snippet doc/src/snippets/declarative/listview/listview.qml isCurrentItem
    * /
    \endcode

    QDoc includes this attached property on the QML reference page for the
    \l{http://doc.trolltech.com/4.7/qml-listview.html#isCurrentItem-prop} 
    {ListView} element.

    \target qmlattachedsignal-command
    \section1 \\qmlattachedsignal  \span {class="newStuff"} {(new)}

    The \\qmlattachedsignal command is for documenting an attachable 
    \l{http://doc.trolltech.com/4.7/qdeclarativeintroduction.html#signal-handlers}
    {signal handler}. The \\qmlattachedsignal command is used just like 
    the \l{qmlsignal-command} {\\qmlsignal} command. 

    The argument is the rest of the line. It should be the name of the
    QML element where the signal handler is declared, the \c{::}
    qualifier, and finally the signal handler name. If we have a QML
    attached signal handler named \c onAdd() in the \c GridView
    element, the \\qmlattachedsignal for it would look like this:

    \code
    / *!
        \qmlattachedsignal GridView::onAdd()
        This attached handler is called immediately after an item is 
	added to the view.
    * /
    \endcode

    QDoc includes this documentation on the QML reference page for the
    \l{http://doc.trolltech.com/4.7/qml-gridview.html#onAdd-signal}
    {GridView} element.

    \target qmlbasictype-command
    \section1 \\qmlbasictype  \span {class="newStuff"} {(new)}

    The \\qmlbasictype command is for documenting a basic type for QML.
    The argument is the type name. The type must be included in the 
    QML basic types group using the \l{ingroup-command}{\\ingroup}
    command as shown below. This will cause QDoc to include the 
    documentation for the type on the
    \l{http://doc.trolltech.com/4.7/qdeclarativebasictypes.html}
    {QML Basic Types} page. The \l{brief-command} {\\brief} command
    is also required, because it appears on the 
    \l{http://doc.trolltech.com/4.7/qdeclarativebasictypes.html}
    {QML Basic Types} page as well.

    \code
    / *!
        \qmlbasictype int
        \ingroup qmlbasictypes

        \brief An integer is a whole number, e.g. 0, 10, or -20.

        An integer is a whole number, e.g. 0, 10, or -20. The possible
        \c int values range from around -2000000000 to around
        2000000000, although most elements will only accept a reduced
        range (which they mention in their documentation).

        Example:
        \qml
        Item { width: 100; height: 200 }
        \endqml

        \sa {QML Basic Types}
    * /
    \endcode

    QDoc outputs this as \l{http://doc.trolltech.com/4.7/qml-int.html}
    {qml-int.html}.

    \target qmlclass-command
    \section1 \\qmlclass  \span {class="newStuff"} {(new)}

    The \\qmlclass command is for documenting a QML element that is
    instantiated by a C++ class. The command has two arguments. The
    first argument is the name of the QML element. The second argument
    is the name of the C++ class that instantiates the QML element. 

    \code
    / *!
        \qmlclass Transform QGraphicsTransform
        \ingroup qml-transform-elements
        \since 4.7
        \brief The Transform elements provide a way of building
        advanced transformations on Items.

        The Transform element is a base type which cannot be
        instantiated directly.  The following concrete Transform types
        are available:

        \list
          \o \l Rotation
          \o \l Scale
          \o \l Translate
        \endlist

        The Transform elements let you create and control advanced
        transformations that can be configured independently using
        specialized properties.

        You can assign any number of Transform elements to an \l
        Item. Each Transform is applied in order, one at a time.

    * /
    \endcode

    This example generates the 
    \l {http://doc.trolltech.com/4.7/qml-transform.html} {QML Trasform
    Element} page. The \\qmlclass comment should include the \l
    {since-command} {\\since} command, because all QML elements are
    new. It should also include the \l{brief-command} {\\brief}
    command. And since every QML element is a member of a group of QML
    elements, it should also include one or more \l{ingroup-command}
    {\\ingroup} commands.

    \target qmlmethod-command
    \section1 \\qmlmethod  \span {class="newStuff"} {(new)}

    The \\qmlmethod command is for documenting a QML method. The
    argument is the complete method signature, including return
    type and parameter names and types.

    \code
    / *!
        \qmlmethod void TextInput::select(int start, int end)

        Causes the text from \a start to \a end to be selected.

        If either start or end is out of range, the selection is not changed.

        After calling this, selectionStart will become the lesser and
        selectionEnd will become the greater (regardless of the order
        passed to this method).

       \sa selectionStart, selectionEnd
    * / 
    \endcode

    QDoc includes this documentation on the element refence page for the 
    \l{http://doc.trolltech.com/4.7/qml-textinput.html#select-method}
    {TextInput} element.

    \target qmlproperty-command
    \section1 \\qmlproperty  \span {class="newStuff"} {(new)}

    The \\qmlproperty command is for documenting a QML property. The
    argument is the rest of the line. The argument text should be the
    property type, followed by the QML element name, the \c{::}
    qualifier, and finally the property name. If we have a QML
    property named \c x in QML element \c Translate, and the property
    has type \c {real}, the \\qmlproperty for it would look like this:

    \code
        / *!
            \qmlproperty real Translate::x

            The translation along the X axis.
        * /
    \endcode

    QDoc includes this QML property on the QML reference page for the
    \l {http://doc.trolltech.com/4.7/qml-translate.html} {Translate}
    element.

    \target qmlsignal-command
    \section1 \\qmlsignal  \span {class="newStuff"} {(new)}

    The \\qmlsignal command is for documenting a  
    \l{http://doc.trolltech.com/4.7/qdeclarativeintroduction.html#signal-handlers}
    {signal handler}.
    The argument is the rest of the line. It should be the QML element where the
    signal handler is declared, the \c{::} qualifier, and finally the signal 
    handler name. If we have a QML signal handler named \c onAdd() in QML 
    element \c MouseArea, the \\qmlsignal for it would look like this:

    \code
    / *!
        \qmlsignal MouseArea::onEntered()

        This handler is called when the mouse enters the mouse area.

        By default the onEntered handler is only called while a button is
        pressed. Setting hoverEnabled to true enables handling of
        onEntered when no mouse button is pressed.

        \sa hoverEnabled
    * /
    \endcode

    QDoc includes this documentation on the QML reference page for the
    \l{http://doc.trolltech.com/4.7/qml-mousearea.html#onEntered-signal}
    {MouseArea} element.

    \target typedef-command
    \section1 \\typedef 

    The \\typedef command is for documenting a C++ typedef. The
    argument is the name of the typedef. The documentation for 
    the typedef will be included in the refernece documentation 
    for the class, namespace, or header file in which the typedef 
    is declared. To relat the \\typedef to a class, namespace, or 
    header file, the \\typedef comment must contain a
     \l {relates-command} {\\relates} command.

    \code
    / *!
        \typedef QObjectList
        \relates QObject

        Synonym for QList<QObject>.
    * /
    \endcode

    QDoc includes this in \c {qobject.html} as:

    \quotation
        \raw HTML
        <h3>typedef QObjectList</h3>
        \endraw

        Synonym for QList<QObject>.
    \endquotation

    Another, although more rare, example:

    \code
    / *!
        \typedef QMsgHandler
        \relates QtGlobal

        This is a typedef for a pointer to a function with the
        following signature:

        \code
            void myMsgHandler(QtMsgType, const char *);
        \ endcode

        \sa QtMsgType, qInstallMsgHandler()
    * /
    \endcode

    QDoc includes this in \c {qtglobal.html} as:

    \quotation
        \raw HTML
        <h3>typedef QtMsgHandler</h3>
        \endraw

        This is a typedef for a pointer to a function with the
        following signature:

        \raw HTML
        <tt>
        <pre>    void myMsgHandler(QtMsgType, const char *);</pre>
        </tt>
        \endraw

        See also QtMsgType and qInstallMsgHandler().
    \endquotation

    Other typedefs are located on the reference page for the class
    that defines them.

    \code
    / *!
        \typedef QLinkedList::Iterator

        Qt-style synonym for QList::iterator.
    * /
    \endcode

    QDoc includes this one on the reference page for class QLinkedList as:

    \quotation
        \raw HTML
        <h3>typedef QLinkedList::Iterator</h3>
        \endraw

        Qt-style synonym for QList::iterator.
    \endquotation

    \target variable-command
    \section1 \\variable 

    The \\variable command is for documenting a class member variable
    or a constant. The argument is the variable or constant name. The
    \\variable command comment includes a \l {brief-command} {\\brief}
    command. QDoc generates the documentation based on the text from
    \\brief command. 

    The documentation will be located in the in the associated class,
    header file or namespace documentation.

    In case of a member variable:

    \code
    / *!
        \variable QStyleOption::palette
        \brief the palette that should be used when painting
               the control
    * /
    \endcode

    QDoc includes this in qstyleoption.html as:

    \quotation
        \raw HTML
        <h3>
            <a href="http://qt.nokia.com/doc/4.0/qpalette.html">
                QPalette
            </a>
            QStyleOption::palette
        </h3>
        \endraw

        This variable holds the palette that should be used
        when painting the control.
    \endquotation

    You can also document constants with the \\variable command.  For
    example, suppose you have the \c Type and \c UserType constants in
    the QTreeWidgetItem class:

    \code
    enum { Type = 0, UserType = 1000 };
    \endcode

    For these, the \\vaqriable command can be used this way:

    \code
    / *!
        \variable QTreeWidgetItem::Type

        The default type for tree widget items.

        \sa UserType, type()
    * /
    \endcode
    \code
    / *!
        \variable QTreeWidgetItem::UserType

        The minimum value for custom types. Values below
        UserType are reserved by Qt.

        \sa Type, type()
    * /
    \endcode

    QDoc includes these in qtreewidget.html as:

    \quotation
        \raw HTML
        <h3>
        const int QTreeWidgetItem::Type
        </h3>
        \endraw

        The default type for tree widget items.

        See also \l {QTreeWidgetItem::UserType} {UserType} and \l
        {QTreeWidgetItem::type()} {type()}.

        \raw HTML
        <h3>
        const int QTreeWidgetItem::UserType
        </h3>
        \endraw

        The minimum value for custom types. Values below
        UserType are reserved by Qt.

        See also \l {QTreeWidgetItem::Type} {Type} and
        \l{QTreeWidgetItem::type()} {type()}.

    \endquotation
*/

/*!
    \page 14-qdoc-commands-contextcommands.html
    \previouspage Topic Commands
    \contentspage Table of Contents
    \nextpage Document Navigation

    \title Context Commands

    The context commands provide information about the element being
    documented that QDoc can't deduce on its own. e.g. Is a class
    thread-safe? Is a function reentrant? Which module is the class a
    member of? Context commands can appear anywhere in a QDoc comment,
    but they are normally placed near the top of the comment, just
    below the \l {Topic Commands} {topic} command.

    \list
      \o \l {16-qdoc-commands-status.html#compat-command}{\\compat},
      \o \l {15-qdoc-commands-navigation.html#contentspage-command}{\\contentspage},
      \o \l {15-qdoc-commands-navigation.html#indexpage-command}{\\indexpage},
      \o \l {19-qdoc-commands-grouping.html#ingroup-command}{\\ingroup},
      \o \l {18-qdoc-commands-relating.html#inherits-command}{\\inherits},
      \o \l {19-qdoc-commands-grouping.html#inmodule-command}{\\inmodule},
      \o \l {16-qdoc-commands-status.html#internal-command}{\\internal},
      \o \l {19-qdoc-commands-grouping.html#mainclass-command}{\\mainclass},
      \o \l {15-qdoc-commands-navigation.html#nextpage-command}{\\nextpage},
      \o \l {17-qdoc-commands-thread.html#nonreentrant-command}{\\nonreentrant},
      \o \l {16-qdoc-commands-status.html#obsolete-command}{\\obsolete},
      \o \l {18-qdoc-commands-relating.html#overload-command}{\\overload},
      \o \l {16-qdoc-commands-status.html#preliminary-command}{\\preliminary},
      \o \l {15-qdoc-commands-navigation.html#previouspage-command}{\\previouspage},
      \o \l {17-qdoc-commands-thread.html#reentrant-command}{\\reentrant},
      \o \l {18-qdoc-commands-relating.html#reimp-command}{\\reimp},
      \o \l {18-qdoc-commands-relating.html#relates-command}{\\relates},
      \o \l {16-qdoc-commands-status.html#since-command}{\\since},
      \o \l {15-qdoc-commands-navigation.html#startpage-command}{\\startpage},
      \o \l {20-qdoc-commands-namingthings.html#subtitle-command}{\\subtitle}
      \o \l {17-qdoc-commands-thread.html#threadsafe-command}{\\threadsafe},
      \o \l {20-qdoc-commands-namingthings.html#title-command}{\\title}
    \endlist

*/

/*!
    \page 15-qdoc-commands-navigation.html
    \previouspage Context Commands
    \contentspage Table of Contents
    \nextpage Reporting Status

    \title Document Navigation

    The navigation commands are for linking the pages of a document in
    a meaningful sequence. Below is a sequence of QDoc comments that
    shows a typical use of the navigation commands.

    \section1 Example

    \code
    / *!
        \page basicqt.html
        \contentspage {Basic Qt} {Contents}
        \nextpage Getting Started

        \indexpage Index
        \startpage Basic Qt

        \title Basic Qt

        The Qt toolkit is a C++ class library and a set of tools for
        building multiplatform GUI programs using a "write once,
        compile anywhere approach".

        Table of contents:

        \list
        \o \l {Getting Started}
        \o \l {Creating Dialogs}
        \o \l {Creating Main Windows}
        \endlist
    * /

    / *!
        \page gettingstarted.html
        \previouspage Basic Qt
        \contentspage {Basic Qt} {Contents}
        \nextpage Creating Dialogs

        \indexpage Index
        \startpage Basic Qt

        \title Getting Started

        This chapter shows how to combine basic C++ with the
        functionality provided by Qt to create a few small graphical
        interface (GUI) applications.
    * /

    / *!
        \page creatingdialogs.html
        \previouspage Getting Started
        \contentspage {Basic Qt} {Contents}

        \indexpage Index
        \startpage Basic Qt

        \title Creating Dialogs

        This chapter will teach you how to create dialog boxes using Qt.
    * /

    / *!
        \page index.html

        \indexpage Index
        \startpage Basic Qt

        \title Index

        \list
            \o \l {Basic Qt}
            \o \l {Creating Dialogs}
            \o \l {Getting Started}
        \endlist
    * /
    \endcode

    QDoc renders the  "Getting Started" page in \c{creatingdialogs.html}:

    \quotation
    \raw HTML
        <table border="0" cellpadding="0" cellspacing="5" width="100%">

        <tr>
        <p>
        [Previous: <a href="15-qdoc-commands-navigation.html#deadlink">
        Basic Qt</a>]
        [<a href="15-qdoc-commands-navigation.html#deadlink">Contents</a>]
        [Next: <a href="15-qdoc-commands-navigation.html#deadlink">
        Creating Dialogs</a>]
        </p>

        <h1 align="center">Getting Started<br /></h1>

        <p>
        This chapter shows how to combine basic C++ with the
        functionality provided by Qt to create a few small graphical
        interface (GUI) applications.
        </p>

        <p>
        [Previous: <a href="15-qdoc-commands-navigation.html#deadlink">
        Basic Qt</a>]
        [<a href="15-qdoc-commands-navigation.html#deadlink">Contents</a>]
        [Next: <a href="15-qdoc-commands-navigation.html#deadlink">
        Creating Dialogs</a>]
        </p>

        </table>
    \endraw
    \endquotation

    The \l {indexpage-command} {\\indexpage} and \l
    {startpage-command} {\\startpage} commands create links to the
    page's index page and start page. These links can be used by
    browsers and search engines.

    The index page is typically an alphabetical list of the document's
    titles and topics, while the start page is the page considered by
    the author to be the starting point of a multipage document.

    The links are included in the generated HTML source code but have
    no visual effect on the documentation:

    \code
    <head>
        ...
        <link rel="index" href="index.html" />
        <link rel="start" href="basicqt.html" />
        ...
    </head>
    \endcode

    \section1 Commands

    \target previouspage-command
    \section2 \\previouspage 

    The \\previouspage command links the current page to the previous
    page in a sequence.a The command has two arguments, each enclosed
    by curly braces: The first is the link target, i.e. the title of
    the previous page, the second is the link text. If the page's
    title is equivalent to the link text, the second argument can be
    omitted.

    The command must stand alone on its own line.

    \target nextpage-command
    \section2 \\nextpage 

    The \\nextpage command links the current page to the next page in
    a sequence. The command follows the same syntax and argument
    convention as the \l {previouspage-command} {\\previouspage}
    command.

    \target startpage-command
    \section2 \\startpage 

    The \\startpage command specifies the first page of a sequence of
    pages. The command must stand alone on its own line, and its
    unique argument is the title of the first document.

    QDoc will generate a link to the start page and include it in the
    generated HTML file, but this has no visual effect on the
    documentation. The generated link type tells browsers and search
    engines which document is considered by the author to be the
    starting point of the collection.

    \target contentspage-command
    \section2 \\contentspage

    The \\contentspage command links the current page to a table of
    contents page. The command follows the same syntax and argument
    convention as the \l {previouspage-command} {\\previouspage}
    command.

    \target indexpage-command
    \section2 \\indexpage 

    The \\indexpage command specifies an index page for the current
    document. The command must stand alone on its own line, and its
    unique argument is the title of the index document.

    QDoc will generate a link to the index page and include it in the
    generated HTML file, but this has no visual effect on the
    documentation. The generated link type tells browsers and search
    engines which document is considered by the author to be the
    index page of the collection.
*/

/*!
    \page 16-qdoc-commands-status.html
    \previouspage Document Navigation
    \contentspage Table of Contents
    \nextpage Thread Support

    \title Reporting Status

    These commands are for indicating that a documented element is
    still under development, is becoming obsolete, is provided for
    compatibility reasons, or is simply not to be included in the
    public interface. The \l {since-command}{\\since} command is for
    including information about the version when a function or class
    first appeared.

    \target compat-command
    \section1 \\compat 

    The \\compat command is for indicating that a class or function is
    part of the support library provided to keep old source code
    working.

    The command must stand on its own line.

    Usually an equivalent function or class is provided as an
    alternative.

    If the command is used in the documentation of a class, the
    command expands to a warning that the referenced class is part of
    the support library. The warning is located at the top of the
    documentation page.

    \code
    / *!
        \class MyQt3SupportClass
        \compat
    * /
    \endcode

    QDoc renders this at the top of the MyQt3SupportClass class
    reference page.

    \quotation
        \bold {This class is part of the Qt 3 support
        library.} It is provided to keep old source code
        working. We strongly advise against using it in new
        code. See the \l
        {http://qt.nokia.com/doc/4.0/porting4.html} {Porting
        Guide} for more information.
    \endquotation

    If the command is used when documenting a function, QDoc will
    create and link to a separate page documenting Qt 3 support
    members when generating the reference documentation for the
    associated class.

    \code
    / *!
        \fn MyClass::MyQt3SupportMemberFunction
        \compat

        Use MyNewFunction() instead.
    * /
    \endcode

    QDoc renders this in \c{myclass-qt3.html} as:

    \quotation
        \raw HTML
        <h1>Qt 3 Support Members for MyClass</h1>
        \endraw

        \bold {The following class members are part of the Qt 3
        support layer.} They are provided to help you port old code to
        Qt 4. We advise against using them in new code.

        ...

        \list
            \o void MyQt3SupportMemberFunction()
            \o ...
        \endlist

        \raw HTML
        <hr />
        <h2>Member Function Documentation</h2>
        <h3>void MyQt3SupportMemberFunction ()</h3>
        <p>Use MyNewFunction() instead.</p>
        \endraw
        ...
    \endquotation

    \target default-command
    \section1 \\default  \span {class="newStuff"} {(new)}

    The \\default command is for marking a QML property as the 
    \l {http://doc.trolltech.com/4.7/qdeclarativeintroduction.html#default-properties}
    {default property}. The word \span {class="newStuff"} {default} is shown in red in
    the documentation of the property.

    \code
    / *!
        \qmlproperty list<Change> State::changes
        This property holds the changes to apply for this state
        \default

        By default these changes are applied against the default state. If the state
        extends another state, then the changes are applied against the state being
        extended.
    * /
    \endcode

    See how QDoc renders this property on the reference page for the
    \l {http://doc.trolltech.com/4.7/qml-state.html#changes-prop} {State}
    element.

    \target obsolete-command
    \section1 \\obsolete 

    The \\obsolete command is for indicating that a function is being
    deprecated, and it should no longer be used in new code. There is
    no guarantee for how long it will remain in the library.

    The command must stand on its own line.

    When generating the reference documentation for a class, QDoc will
    create and link to a separate page documenting its obsolete
    functions.  Usually an equivalent function is provided as an
    alternative.

    \code
    / *!
        \fn MyClass::MyObsoleteFunction
        \obsolete

        Use MyNewFunction() instead.
    * /
    \endcode

    QDoc renders this in \c{myclass-obsolete.html} as:

    \quotation
        \raw HTML
        <h1>Obsolete Members for MyClass</h1>
        \endraw

        \bold {The following class members are obsolete.} They are
        provided to keep old source code working. We strongly advise
        against using them in new code.

        ...

        \list
            \o void MyObsoleteFunction() \c (obsolete)
            \o ...
        \endlist

        \raw HTML
        <hr />
        <h2>Member Function Documentation</h2>
        <h3>void MyObsoleteFunction ()</h3>
        <p>Use MyNewFunction() instead.</p>
        \endraw
        ...
    \endquotation

    \target internal-command
    \section1 \\internal 

    The \\internal command indicates that the referenced
    function is not part of the public interface.

    The command must stand on its own line.

    QDoc ignores the documentation as well as the documented item,
    when generating the associated class reference documenation.

    \code
    / *!
        \internal

        Tries to find the decimal separator. If it can't find
        it and the thousand delimiter is != '.' it will try to
        find a '.';
    * /
    int QDoubleSpinBoxPrivate::findDelimiter
            (const QString &str, int index) const
    {
        int dotindex = str.indexOf(delimiter, index);
        if (dotindex == -1 && thousand != dot && delimiter != dot)
            dotindex = str.indexOf(dot, index);
        return dotindex;
    }
    \endcode

    This function will not be included in the documentation.

    \target preliminary-command
    \section1 \\preliminary 

    The \\preliminary command is for indicating that a referenced
    function is still under development.

    The command must stand on its own line.

    The \\preliminary command expands to a notification in the
    function documentation, and marks the function as preliminary when
    it appears in lists.

    \code
    / *!
        \preliminary

        Returns information about the joining properties of the
        character (needed for certain languages such as
        Arabic).
    * /
    QChar::Joining QChar::joining() const
    {
        return ::joining(*this);
    }
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
        <h3>
        <a href="http://qt.nokia.com/doc/4.0/qchar.html#Joining-enum">Joining</a>
        QChar::joining () const</h3>
        \endraw

        \bold {This function is under development and
    	subject to change.}

        Returns information about the joining properties of the
        character (needed for certain languages such as
        Arabic).
    \endquotation

    And the function's entry in QChar's list of functions will be
    rendered as:

    \quotation
        \list
        \o ...
        \o Joining
           \l {http://qt.nokia.com/doc/4.0/qchar.html#Joining-enum}
              {joining}()
           const   \c (preliminary)
       \o ...
       \endlist
    \endquotation

    \target since-command
    \section1 \\since 

    The \\since command tells in which minor release
    the associated functionality was added.

    \code
    / *!
        \since 4.1

        Returns an icon for \a standardIcon.

        ...

        \sa standardIconImplementation(), standardPixmap()
    * /
    QIcon QStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption *option, const QWidget *widget) const
    {
    }
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
        <h3>QIcon QStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption *option, const QWidget *widget) const</h3>
        \endraw

        This function was introduced in Qt version 4.1

        Returns an icon for \a standardIcon.

        ...

        See also \l {QStyle::standardIconImplementation()}
        {standardIconImplementation()} and \l
        {QStyle::standardPixmap()} {standardPixmap()}.
    \endquotation

    QDoc generates the "Qt" reference from the \l
    {25-qdoc-configuration-derivedprojects.html#project} {\c project}
    configuration variable. For that reason this reference will change
    according to the current documentation project.

    See also \l {25-qdoc-configuration-derivedprojects.html#project}
    {\c project}.
*/

/*!
    \page 17-qdoc-commands-thread.html
    \previouspage Reporting Status
    \contentspage Table of Contents
    \nextpage Relating Things

    \title Thread Support

    The thread support commands are for specifying the level of
    support for multithreaded programming in a class or function.
    There are three levels of support: \c threadsafe, \c reentrant and
    \c nonreentrant.

    The default is \c nonreentrant which means that the associated
    class or function cannot be called by multiple threads. \c
    Reentrant and \c threadsafe are levels primarily used for classes.

    \c Reentrant means that all the functions in the referenced class
    can be called simultaneously by multiple threads, provided that
    each invocation of the functions reference unique data. While \c
    threadsafe means that all the functions in the referenced class
    can be called simultaneously by multiple threads even when each
    invocation references shared data.

    When a class is marked \l {reentrant-command} {\\reentrant} or \l
    {threadsafe-command} {\\threadsafe}, functions in that class can
    be marked \c nonreentrant using the \l {nonreentrant-command}
    {\\nonreentrant} command. 

    \section1 Example

    \target reentrant-example
    \code
    / *!
        \class QLocale
        \brief The QLocale class converts between numbers and their
        string representations in various languages.

        \reentrant
        \ingroup i18n
        \ingroup text
        \mainclass

        QLocale is initialized with a language/country pair in its
        constructor and offers number-to-string and string-to-number
        conversion functions similar to those in QString.

        ...
    * /

    / *!
        \nonreentrant

        Sets the global default locale to \a locale. These values are
        used when a QLocale object is constructed with no
        arguments. If this function is not called, the system's locale
        is used.

        \warning In a multithreaded application, the default locale
        should be set at application startup, before any non-GUI
        threads are created.

        \sa system() c()
    * /
    void QLocale::setDefault(const QLocale &locale)
    {
        default_d = locale.d;
    }
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
            <h1><center>QLocale Class Reference</center></h1>
        \endraw

        The QLocale class converts between numbers and their string
        representations in various languages. More...

        \code
        #include <QLocale>
        \endcode

        \bold {Note:} All the functions in this class are \l
        {threads.html#reentrant} {reentrant}, except \l
        {QLocale::setDefault()} {setDefault()}.

        ...

        \raw HTML
            <hr />
            <h2>Member Type Documentation</h2>
        \endraw

        ...

        \raw HTML
            <h3>void QLocale::setDefault ( const QLocale & locale ) </h3>
        \endraw

        Sets the global default locale to locale. These values are
        used when a QLocale object is constructed with no
        arguments. If this function is not called, the system's locale
        is used.

        \warning In a multithreaded application, the default locale
        should be set at application startup, before any non-GUI
        threads are created.

        \warning This function is not reentrant.

        See also \l {QLocale::system()} {system()} and \l
        {QLocale::c()} {c()}.

        ...
    \endquotation

    As shown above, QDoc generates a notification when a class is
    declared reentrant, and lists the exceptions (the declared
    nonreentrant functions). A link to the general documentation on \l
    {threads.html#reentrant} {reentrancy and thread-safety} is
    included.  In addition a warning, "\bold Warning: This function is
    not reentrant.", is generated in the nonreentrant functions'
    documentation.

    QDoc will generate the same notification and warnings when a class
    is declared threadsafe.

    For more information see the general documentation on \l
    {threads.html#reentrant} {reentrancy and thread-safety}.

    \section1 Commands

    \target threadsafe-command
    \section2 \\threadsafe 

    The \\threadsafe command includes a line in the documentation to
    indicate that the associated class or function is \e threadsafe
    and can be called simultaneously by multiple threads, even when
    separate invocations reference shared data.

    The command must stand on its own line.

    The documentation generated from this command will be similar to
    the what is generated for the \l {reentrant-command} {\\reentrant}
    command. See the example above in the \l {reentrant-example}
    {introduction}.

    See also \l{reentrant-command} {\\reentrant} and
    \l{nonreentrant-command} {\\nonreentrant}.

    \target reentrant-command
    \section2 \\reentrant 

    The \\reentrant command indicates that the associated class or
    function can be called simultaneously by multiple threads,
    provided that each invocation references its own data. See the \l
    {reentrant-example} {example} above.

    The command must stand on its own line.

    See also \l{nonreentrant-command} {\\nonreentrant} and
    \l{threadsafe-command} {\\threadsafe}.

    \target nonreentrant-command
    \section2 \\nonreentrant 

    The \\nonreentrant command indicates that the associated class or
    function cannot be called by multiple threads. Nonreentrant is the
    default case. 

    The command must stand on its own line.

    When a class is marked \l {reentrant-command} {\\reentrant} or \l
    {threadsafe-command} {\\threadsafe}, functions in that class can
    be marked \c nonreentrant using this command in the \l{fn-command}
    {\\fn} comment of the functions to be excluded.

    See also \l{reentrant-command} {\\reentrant} and
    \l{threadsafe-command} {\\threadsafe}.
*/

/*!
    \page 18-qdoc-commands-relating.html
    \previouspage Thread Support
    \contentspage Table of Contents
    \nextpage Grouping Things

    \title Relating Things

    The relating commands are for specifying how one documented
    element relates to another documented element. e.g., This function
    is an overload of another function, or this function is a
    reimplementation of another function, or this typedef is \e
    related to some class or header file. There is also a command
    for documenting that a QML element inherits some other QML 
    element.

    \section1 Commands

    \target inherits-command
    \section2 \\inherits  \span {class="newStuff"} {(new)}

    The \\inherits command is for documenting that one QML element 
    inherits some other QML element. It must be included in the 
    inheriting element's \l{qmlclass-command}{\\qmlclass} comment.
    The argument is the name of the inherited QML element. 

    \code
    / *!
        \qmlclass PauseAnimation QDeclarativePauseAnimation
        \ingroup qml-animation-transition
        \since 4.7
        \inherits Animation
        \brief The PauseAnimation element provides a pause for an animation.

        When used in a SequentialAnimation, PauseAnimation is a step
        when nothing happens, for a specified duration.

        A 500ms animation sequence, with a 100ms pause between two animations:

        SequentialAnimation {
            NumberAnimation { ... duration: 200 }
            PauseAnimation { duration: 100 }
            NumberAnimation { ... duration: 200 }
        }

        \sa {QML Animation and Transitions}, {declarative/animation/basics}{Animation basics example}
    * /
    \endcode

    QDoc includes this line on the reference page for the
    \l{http://doc.trolltech.com/4.7/qml-pauseanimation.html} {PauseAnimation}
    element:

    \quotation
        Inherits \l{http://doc.trolltech.com/4.7/qml-animation.html} {Animation}
    \endquotation

    \target overload-command
    \section2 \\overload 

    The \\overload command is for indicating that a function is a
    secondary overload of its name.

    The command must stand on its own line.

    For a function name that is overloaded (except constructors), QDoc
    expects one primary version of the function, and all the others
    marked with the \bold {\\overload command}.  The primary version
    should be fully documented. Each overload can have whatever extra
    documentation you want to add for just that overloaded version.

    From Qt 4.5, you can include the function name plus '()' as a
    parameter to the \bold{\\overload} command, which will include a
    standard \e{This function overloads...}  line of text with a link
    to the documentation for the primary version of the function.

    \code
    / *!
        \overload addAction()

        This convenience function creates a new action with an
        \a icon and some \a text. The function adds the newly
        created action to the menu's list of actions, and
        returns it.

        \sa QWidget::addAction()
    * /
    QAction *QMenu::addAction(const QIcon &icon, const QString &text)
    {
        QAction *ret = new QAction(icon, text, this);
        addAction(ret);
        return ret;
    }
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
        <h3><a href="http://qt.nokia.com/doc/4.0/qaction.html">QAction</a>
        * QMenu::addAction ( const QIcon & <i>icon</i>,
        const QString & <i>text</i> )
        </h3>
        \endraw

	This function overloads \l {http://qt.nokia.com/doc/4.0/qwidget.html#addAction} {addAction()}

        This convenience function creates a new action with an
        \e icon and some \e text. The function adds the newly
        created action to the menu's list of actions, and
        returns it.

        See also
        \l {http://qt.nokia.com/doc/4.0/qwidget.html#addAction}
        {QWidget::addAction}().
    \endquotation

    If you don't include the function name with the \bold{\\overlaod}
    command, then instead of the "This function overloads..." line
    with the link to the documentation for the primary version, you
    get the old standard line:

    \quotation
        This is an overloaded member function, provided for
        convenience. 
    \endquotation.

    \target reimp-command
    \section2 \\reimp 

    The \\reimp command is for indicating that a function is a
    reimplementation of a virtual function.

    The command must stand on its own line.

    QDoc will omit the reimplemented function from the class
    reference.

    \code
    / *!
        \reimp
    * /
    void QToolButton::nextCheckState()
    {
        Q_D(QToolButton);
        if (!d->defaultAction)
            QAbstractButton::nextCheckState();
        else
            d->defaultAction->trigger();
    }
    \endcode

    This function will not be included in the documentation. Instead,
    a link to the base function QAbstractButton::nextCheckState() will
    appear in the documentation.

    \target relates-command
    \section2 \\relates 

    The \\relates command is for including the documentation of a
    global element to some class or header file. The argument is a
    class name or header file.

    \code
    / *!
        \relates QChar

        Reads a char from the stream \a in into char \a chr.

        \sa {Format of the QDataStream operators}
    * /
    QDataStream &operator>>(QDataStream &in, QChar &chr)
    {
        quint16 u;
        in >> u;
        chr.unicode() = ushort(u);
        return in;
    }
    \endcode
 
    The documentation for this function will be included on the reference page 
    for class QChra.
*/

/*!
    \page 19-qdoc-commands-grouping.html
    \previouspage Relating Things
    \contentspage Table of Contents
    \nextpage Naming Things

    \title Grouping Things

    The grouping commands relate classes to defined groups and
    modules. The groups are used when generating lists of related
    classes in the documentation, while the modules are elements of
    Qt's structure.

    \section1 Commands

    \target mainclass-command
    \section2 \\mainclass 

    The \\mainclass command relates the documented class to
    a group called mainclasses.

    The command must stand on its own line.

    \code
    / *!
        \class QWidget qwidget.h
        \brief The QWidget class is the base class of
        all user interface objects.

        \mainclass

        ...
    * /
    \endcode

    This will include the QWidget class in the \e mainclasses
    group, which means, for example, that the class will appear on the
    list created by calling the \l {generatelist-command}
    {\\generatelist} command with the \c mainclasses argument:

    \l http://qt.nokia.com/doc/4.0/mainclasses.html

    \note The Qt documentation no longer includes the \e mainclasses
    page.

    See also \l {generatelist-command} {\\generatelist}.

    \target ingroup-command
    \section2 \\ingroup 

    The \\ingroup command indicates that the given
    overview or documented class belongs to a certain group of
    related docmentation.

    A class or overview may belong to many groups.

    The \\ingroup command's argument is a group name, but note
    that the command considers the rest of the line as part of
    its argument. Make sure that the group name is followed by
    a linebreak.

    \code
    / *!
        \class QDir
        \brief The QDir class provides access to directory
               structures and their contents.

        \ingroup io
        ...
    * /
    \endcode

    This will include the QDir class in the \c io group, which means,
    for example, that QDir will appear on the list created by calling
    the \l {group-command} {\\group} command with the \c io argument.

    To list overviews that are related to a certain group, you must
    generate the list explicitly using the \l {generatelist-command}
    {\\generatelist} command with the \c related argument.

    See also \l {group-command} {\\group}.

    \target inmodule-command
    \section2 \\inmodule 

    The \\inmodule command relates a class to the module specified by
    the command's argument.

    For the basic classes in Qt, a class's module is determined by its
    location, i.e. its directory. However, for extensions, like
    ActiveQt and Qt Designer, a class must be related to a module
    explicitly.

    The command's argument is a module name, but note that the command
    considers the rest of the line as part of its argument. Make sure
    that the module name is followed by a linebreak.

    \code
    /*!
        \class QDesignerTaskMenuExtension
        \inmodule QtDesigner
    * /
    \endcode

    This ensures that the QDesignerTaskMenuExtension class is included
    in the \c QtDesigner module, which means, for example, that the
    class will appear on the list created by calling the \l
    {generatelist-command} {\\generatelist} command with the \c
    {{classesbymodule QtDesigner}} argument.

    See also \l {module-command} {\\module} and \l
    {generatelist-command} {\\generatelist}.
*/

/*!
    \page 20-qdoc-commands-namingthings.html
    \previouspage Grouping Things
    \contentspage Table of Contents
    \nextpage Markup Commands

    \title Naming Things

    In general, a title command considers everything that follows it
    until the first line break as its argument.  If the title is so
    long it must span multiple lines, end each line (except the last
    one) with a backslash.

    \section1 Commands

    \target title-command
    \section2 \\title 

    The \\title command sets the title for a documentation page, or
    allows you to override it.

    \code
    / *!
        \page signalandslots.html

        \title Signals & Slots

        Signals and slots are used for communication between
        objects. The signals and slots mechanism is a central
        feature of Qt and probably the part that differs most
        from the features provided by other frameworks.

        ...
    * /
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
            <h1><center>Signal and Slots</center></h1>
        \endraw

        Signals and slots are used for communication between
        objects. The signals and slots mechanism is a central
        feature of Qt and probably the part that differs most
        from the features provided by other frameworks.
        ...
    \endquotation
    See also \l {subtitle-command} {\\subtitle}.

    \target subtitle-command
    \section2 \\subtitle 

    The \\subtitle command sets a subtitle for a documentation page.

    \code
    / *!
        \page qtopiacore-overview.html

        \title Qtopia Core
        \subtitle Qt for Embedded Linux

        Qt/Embedded, the embedded Linux port of Qt, is a
        complete and self-contained C++ GUI and platform
        development tool for Linux-based embedded development.
        ...
    * /
    \endcode

    QDoc renders this as:

    \quotation
        \raw HTML
            <h1><center>Qtopia Core</center></h1>
            <h2><center>Qt for Embedded Linux</center></h2>
        \endraw

        Qt/Embedded, the embedded Linux port of Qt, is a
        complete and self-contained C++ GUI and platform
        development tool for Linux-based embedded development.
        ...
    \endquotation

    See also \l {title-command} {\\title}.

*/

/*!
    \page 21-0-qdoc-configuration.html
    \previouspage Miscellaneous
    \contentspage Table of Contents
    \nextpage Generic Configuration Variables

    \title The QDoc Configuration File

    Before running QDoc, you must create a QDoc configuration file to
    tell QDoc where to find the source files that contain the QDoc
    comments. The pathname to your configuration file is passed to
    QDoc on the command line:

    \quotation
        \c {/current/dir$ ../../bin/qdoc3 ./config.qdocconf}
    \endquotation

    \section1 General Description

    The configuration file is a list of entries of the form \e
    {"variable = value"}. Using the configuration variables, you can
    define where QDoc should find the various source files, images and
    examples, where to put generated documentation etc. The
    configuration file can also contain directives like \c
    include. For an example, see the \l minimum.qdocconf file.

    You can also use configuration variables to get QDoc to support
    \l{Supporting Derived Projects} {derived projects}, i.e QDoc can
    generate links in your project's documentation to elements in the
    Qt online documentation. See the \l {Supporting Derived projects}
    section. 

    The value of a configuration variable can be set using either '='
    or '+='. The difference is that '=' overrides the previous value,
    while '+=' adds a new value to the current one.

    Some configuration variables accept a list of strings as their
    value, e.g. 
    \l {22-qdoc-configuration-generalvariables.html#sourcedirs-variable}
    {\c{sourcedirs}}, while others accept only a single string. Double
    quotes around a value string are optional, but including them allows 
    you to use special characters like '=' and ' \" ' within the valuem
    string, e.g.:

    \code
    HTML.postheader = "<a href=\"index.html\">Home</a>"
    \endcode

    If an entry spans many lines, use a backslash at the end of every
    line but the last:

    \code
    sourcedirs = kernel \
                 tools \
                 widgets
    \endcode

    \section1 Configuration Variables

    \section1 Variable List

    \list
    \o \l {22-qdoc-configuration-generalvariables.html#alias-variable} {alias}
    \o \l {23-qdoc-configuration-cppvariables.html#Cpp.ignoredirectives-variable} {Cpp.ignoredirectives}
    \o \l {23-qdoc-configuration-cppvariables.html#Cpp.ignoretokens-variable} {Cpp.ignoretokens}
    \o \l {22-qdoc-configuration-generalvariables.html#defines-variable} {defines}
    \o \l {22-qdoc-configuration-generalvariables.html#edition-variable} {edition}
    \o \l {22-qdoc-configuration-generalvariables.html#exampledirs-variable} {exampledirs}
    \o \l {22-qdoc-configuration-generalvariables.html#examples-variable} {examples}
    \o \l {22-qdoc-configuration-generalvariables.html#examples.fileextensions-variable} {examples.fileextensions}
    \o \l {22-qdoc-configuration-generalvariables.html#extraimages-variable} {extraimages}
    \o \l {22-qdoc-configuration-generalvariables.html#falsehoods-variable} {falsehoods}
    \o \l {22-qdoc-configuration-generalvariables.html#headerdirs-variable} {headerdirs}
    \o \l {22-qdoc-configuration-generalvariables.html#headers-variable} {headers}
    \o \l {22-qdoc-configuration-generalvariables.html#headers.fileextensions-variable} {headers.fileextensions}
    \o \l {24-qdoc-configuration-htmlvariables.html#HTML.footer-variable} {HTML.footer}
    \o \l {24-qdoc-configuration-htmlvariables.html#HTML.postheader-variable} {HTML.postheader}
    \o \l {24-qdoc-configuration-htmlvariables.html#HTML.style-variable} {HTML.style}
    \o \l {22-qdoc-configuration-generalvariables.html#imagedirs-variable} {imagedirs}
    \o \l {22-qdoc-configuration-generalvariables.html#images-variable} {images}
    \o \l {22-qdoc-configuration-generalvariables.html#images.fileextensions-variable} {images.fileextensions}
    \o \l {22-qdoc-configuration-generalvariables.html#language-variable} {language}
    \o \l {22-qdoc-configuration-generalvariables.html#macro-variable} {macro}
    \o \l {22-qdoc-configuration-generalvariables.html#outputdir-variable} {outputdir}
    \o \l {22-qdoc-configuration-generalvariables.html#outputformats-variable} {outputformats}
    \o \l {22-qdoc-configuration-generalvariables.html#slow-variable} {slow}
    \o \l {22-qdoc-configuration-generalvariables.html#sourcedirs-variable} {sourcedirs}
    \o \l {22-qdoc-configuration-generalvariables.html#sources-variable} {sources}
    \o \l {22-qdoc-configuration-generalvariables.html#sources.fileextensions-variable} {sources.fileextensions}
    \o \l {22-qdoc-configuration-generalvariables.html#spurious-variable} {spurious}
    \o \l {22-qdoc-configuration-generalvariables.html#tabsize-variable} {tabsize}
    \o \l {22-qdoc-configuration-generalvariables.html#version-variable} {version}
    \o \l {22-qdoc-configuration-generalvariables.html#versionsym-variable} {versionsym}
    \endlist

    \section1 Categories

    \list
    \o \l {Generic Configuration Variables}
    \o \l {C++ Specific Configuration Variables}
    \o \l {HTML Specific Configuration Variables}
    \endlist

    \section1 Configuration File Examples

    \list
    \o A minimum configuration file: \l minimum.qdocconf
    \o The Qt configuration file: \l qt.qdocconf
    \endlist
*/

/*!
    \page 21-1-minimum-qdocconf.html
    \previouspage qt.qdocconf
    \contentspage Table of Contents
    \nextpage Table of Contents

    \title minimum.qdocconf

    \quotefile examples/minimum.qdocconf
*/

/*!
    \page 21-2-qt-qdocconf.html
    \previouspage Compatibility Issues
    \contentspage Table of Contents
    \nextpage minimum.qdocconf

    \title qt.qdocconf

    \quotefile files/qt.qdocconf
*/

/*!
    \page 22-qdoc-configuration-generalvariables.html
    \previouspage The QDoc Configuration File
    \contentspage Table of Contents
    \nextpage Creating Help Project Files

    \title Generic Configuration Variables

    With the general QDoc configuration variables, you can define
    where QDoc will find the various source files it needs to generate
    the documentation, as well as the directory to put the generated
    documentation. You can also do some minor manipulation of QDoc
    itself, controlling its output and processing behavior.

    \target alias-variable
    \section1 alias 

    The \c alias variable renames a QDoc command.

    The general syntax is \tt {alias.\e{original-command-name} = \e
    temporary-command-name}.

    \code
        alias.i = e
    \endcode

    This renames the built-in command \\i (italics) to \\e.  The \c
    alias variable is often used for compatibility reasons; for more
    information see the \l {Compatibility Issues} {compatibility
    section}.

    See also \l {macro-command} {macro}.

    \target codeindent-variable
    \section1 codeindent 

    The \c codeindent variable specifies the level of indentation that
    QDoc uses when writing code snippets.

    QDoc originally used a hard-coded value of four spaces for code
    indentation to ensure that code snippets could be easily
    distinguished from surrounding text. Since we can use \l{HTML
    Specific Configuration Variables#HTML.stylesheets} {stylesheets}
    to adjust the appearance of certain types of HTML elements, this
    level of indentation is not always required.

    \target defines-variable
    \section1 defines 

    The \c defines variable specifies the C++ preprocessor symbols
    that QDoc will recognize and respond to.

    When a preprocessor symbol is specified using the \c defines
    variable, you can also use the \l {if-command} {\\if} command to
    enclose documentation that only will be included if the
    preprocessor symbol is defined.

    The values of the variable are regular expressions (see QRegExp
    for details). By default, no symbol is defined, meaning that code
    protected with #ifdef...#endif will be ignored.

    \code
        defines = Q_QDOC \
                  QT_.*_SUPPORT \
                  QT_.*_LIB \
                  QT_COMPAT \
                  QT3_SUPPORT \
                  Q_WS_.* \
                  Q_OS_.* \
                  Q_BYTE_ORDER \
                  __cplusplus
    \endcode

    This ensures that QDoc will process the code that requires these
    symbols to be defined. For example:

    \code
        #ifdef Q_WS_WIN
          HDC getDC() const;
          void releaseDC(HDC) const;
        #endif
    \endcode

    Since the Q_WS_.* regular expression (specified using the \c
    defines variable) matches Q_WS_WIN, QDoc will process the code
    within #ifdef and #endif in our example.

    You can also define preprocessor symbols manually on the command
    line using the -D option. For example:

    \code
        currentdirectory$ qdoc3 -Dconsoleedition qt.qdocconf
    \endcode

    In this case the -D option ensures that the \c consoleedition
    preprocessor symbol is defined when QDoc processes the source
    files defined in the qt.qdocconf file.

    See also \l {falsehoods-variable} {falsehoods} and \l {if-command} {\\if}.

    \target edition-variable
    \section1 edition 

    The \c edition variable specifies which modules are included in
    each edition of a package, and provides QDoc with information to
    provide class lists for each edition.

    This feature is mostly used when providing documentation for Qt
    packages.

    The \c edition variable is always used with a particular edition
    name to define the modules for that edition:

    \code
        edition.Console      = QtCore QtNetwork QtSql QtXml
        edition.Desktop      = QtCore QtGui QtNetwork QtOpenGL QtSql QtXml \
                               QtDesigner QtAssistant Qt3Support QAxContainer \
                               QAxServer
        edition.DesktopLight = QtCore QtGui Qt3SupportLight
    \endcode

    In the above examples, the \c Console edition only includes the
    contents of four modules. Only the classes from these modules will
    be used when the \l{Miscellaneous#generatelist-command}
    {generatelist} command is used to generate a list of classes for
    this edition:

    \code
        \generatelist{classesbyedition Console}
    \endcode

    \target exampledirs-variable
    \section1 exampledirs 

    The \c exampledirs variable specifies the directories containing
    the source code of the example files.

    The \l {examples-variable} {examples} {examples} and \l
    {exampledirs-variable} {exampledirs} variables are used by the \l
    {quotefromfile-command} {\\quotefromfile}, \l {quotefile-command}
    {\\quotefile} and \l {example-command} {\\example} commands.  If
    both the \l {examples-variable} {examples} and \l
    {exampledirs-variable} {exampledirs} variables are defined, QDoc
    will search in both, first in \l {examples-variable} {examples}
    then in \l {exampledirs-variable} {exampledirs}.

    QDoc will search through the directories in the specified order,
    and accept the first matching file it finds. It will only search
    in the specified directories, \e not in subdirectories.

    \code
        exampledirs = $QTDIR/doc/src \
                      $QTDIR/examples \
                      $QTDIR \
                      $QTDIR/qmake/examples

        examples    = $QTDIR/examples/widgets/analogclock/analogclock.cpp
    \endcode

    When processing

    \code
        \quotefromfile widgets/calculator/calculator.cpp
    \endcode

    QDoc will then see if there exists a file called \c calculator.cpp
    listed as a value in the \l {examples} {\c examples} variable. If
    it doesn't, it will search in the \c exampledirs variable, and
    first see if there exists a file called

    \code
        $QTDIR/doc/src/widgets/calculator/calculator.cpp
    \endcode

    If it doesn't, QDoc will continue looking for a file called

    \code
        $QTDIR/examples/widgets/calculator/calculator.cpp
    \endcode

    and so forth.

    See also \l examples.

    \target examples-variable
    \section1 examples 

    The \c examples variable allows you to specify individual example
    files in addition to those located in the directories specified by
    the \l {exampledirs-variable} {\c exampledirs} variable.

    The \c examples and \l {exampledirs-variable} {\c exampledirs}
    variables are used by the \l {quotefromfile-command}
    {\\quotefromfile}, \l {quotefile-command} {\\quotefile} and \l
    {example} {\\example} commands. If both the \c examples and \l
    {exampledirs-variable} {\c exampledirs} variables are defined,
    QDoc will search in both, first in \c examples then in \l
    {exampledirs-variable} {\c exampledirs}.

    QDoc will search through the values listed for the \c examples
    variable, in the specified order, and accept the first one it
    finds.

    For an extensive example, see the \l {exampledirs-variable} {\c
    exampledirs} command. But note that if you know the file is listed
    in the \c examples variable, you don't need to specify its path:

    \code
        \quotefromfile calculator.cpp
    \endcode

    See also \l {exampledirs-variable} {exampledirs}.

    \target examples.fileextensions-variable
    \section1 examples.fileextensions 

    The \c examples.fileextensions variable specifies the file
    extensions that qdoc will look for when collecting example files
    for display in the documentation.

    The default extensions are *.cpp, *.h, *.js, *.xq, *.svg, *.xml
    and *.ui. However, if

    The extensions are given as standard wildcard expressions.  You
    can add a file extension to the filter using '+='. For example:

    \code
        examples.fileextensions += *.qrc
    \endcode

    See also \l{headers.fileextensions}.

    \target extraimages-variable
    \section1 extraimages 

    The \c extraimages variable tells QDoc to incorporate specific
    images in the generated documentation.

    QDoc will not recognize images used within HTML (or any other
    markup language). If we want the images to be copied from the
    directories specified by \l {imagedirs} {\c imagedirs} (the images
    in question must be located in these directories) to the output
    directory, we must specify the images using the \c extraimages
    variable.

    The general syntax is \tt {extraimages.\e{format} = \e image}. The
    file extension is optional.

    For example, in \l qt.qdocconf we use a couple of images within
    the HTML.postheader variable which value is pure HTML. For that
    reason, these images are specified using the \c extraimages
    variable:

    \code
        extraimages.HTML = qt-logo
    \endcode

    See also \l images and \l imagedirs.

    \target falsehoods-variable
    \section1 falsehoods 

    The \c falsehoods variable defines the truth value of specified
    preprocessor symbols as false.

    If this variable is not set for a preprocessor symbol, QDoc
    assumes its truth value is true. The exception is '0', which value
    always is false.

    QDoc will recognize, and is able to evaluate, the following
    preprocessor syntax:

    \code
        #ifdef NOTYET
         ...
        #endif

        #if defined (NOTYET)
         ...
        #end if
    \endcode

    However, faced with unknown syntax like

    \code
        #if NOTYET
            ...
        #endif
    \endcode

    QDoc will evaluate it as true by default, \e unless the
    preprocessor symbol is specified within the \c falsehoods variable
    entry:

    \code
        falsehoods = NOTYET
    \endcode

    See also \l defines.

    \target generateindex-variable
    \section1 generateindex 

    The \c generateindex variable contains a boolean value that
    specifies whether to generate an index file when HTML
    documentation is generated.

    By default, an index file is always generated with HTML
    documentation, so this variable is typically only used when
    disabling this feature (by setting the value to \c false) or when
    enabling index generation for the WebXML output (by setting the
    value to \c true).

    \target headerdirs-variable
    \section1 headerdirs 

    The \c headerdirs variable specifies the directories containing
    the header files associated with the \c .cpp source files used in
    the documentation.

    \code
        headerdirs = $QTDIR/src \
                     $QTDIR/extensions/activeqt \
                     $QTDIR/extensions/motif \
                     $QTDIR/tools/designer/src/lib/extension \
                     $QTDIR/tools/designer/src/lib/sdk \
                     $QTDIR/tools/designer/src/lib/uilib
    \endcode

    When executed, the first QDoc will do is to read through the
    headers specified in the \l {headers} {\c headers} variable, and
    the ones located in the directories specified in the \c headerdir
    variable (including all subdirectories), building an internal
    structure of the classes and their functions.

    Then it will read through the sources specified in the \l
    {sources-variable} {\c sources}, and the ones located in the
    directories specified in the \l {sourcedirs-variable} {\c
    sourcedirs} varible (including all subdirectories), merging the
    documentation with the structure it retrieved from the header
    files.

    If both the \c headers and \c headerdirs variables are defined,
    QDoc will read through both, first \l {headers} {\c headers} then
    \c headerdirs.

    In the specified directories, QDoc will only read the files with
    the fileextensions specified in the \l {headers.fileextensions}
    {\c headers.fileextensions} variable. The default extensions are
    *.ch, *.h, *.h++, *.hh, *.hpp and *.hxx". The files specified by
    \l {headers} {\c headers} will be read independent of their
    fileextensions.

    See also \l headers and \l headers.fileextensions.

    \target headers-variable
    \section1 headers 

    The \c headers variable allows you to specify individual header
    files in addition to those located in the directories specified by
    the \l {headerdirs} {\c headerdirs} variable.

    \code
        headers = $QTDIR/src/gui/widgets/qlineedit.h \
                  $QTDIR/src/gui/widgets/qpushbutton.h
    \endcode

    When processing the \c headers variable, QDoc behaves in the same
    way as it does when processing the \l {headerdirs} {\c headerdirs}
    variable. For more information, see the \l {headerdirs} {\c
    headerdirs} variable.

    See also \l headerdirs.

    \target headers.fileextensions-variable
    \section1 headers.fileextensions 

    The \c headers.fileextensions variable specify the extension used
    by the headers.

    When processing the header files specified in the \l {headerdirs}
    {\c headerdirs} variable, QDoc will only read the files with the
    fileextensions specified in the \c headers.fileextensions
    variable. In this way QDoc avoid spending time reading irrelevant
    files.

    The default extensions are *.ch, *.h, *.h++, *.hh, *.hpp and
    *.hxx.

    The extensions are given as standard wildcard expressions.  You
    can add a file extension to the filter using '+='. For example:

    \code
        header.fileextensions += *.H
    \endcode

    \warning The above assignment may not work as described.

    See also \l headerdirs.

    \target imagedirs-variable
    \section1 imagedirs 

    The \c imagedirs variable specifies the directories containing the
    images used in the documentation.

    The \l {images} {\c images} and \c imagedirs variables are used by
    the \l {image-command} {\\image} and \l {inlineimage-command}
    {\\inlineimage} commands.  If both the \l {images} {\c images} and
    \c imagedirs variables are defined, QDoc will search in both,
    first in \l {images} {\c images} then in \c imagedirs.

    QDoc will search through the directories in the specified order,
    and accept the first matching file it finds. It will only search
    in the specified directories, \e not in subdirectories.

    \code
        imagedirs = $QTDIR/doc/src/images \
                    $QTDIR/examples

        images    = $QTDIR/doc/src/images/calculator-example.png
    \endcode

    When processing

    \code
        \image calculator-example.png
    \endcode

    QDoc will then see if there exists a file called
    calculator-example.png listed as a value in the \c images
    variable. If it doesn't, it will search in the \c imagedirs
    variable, and first see if there exists a file called

    \code
        $QTDIR/doc/src/images/calculator-example.png
    \endcode

    If it doesn't, QDoc will look for a file called

    \code
        $QTDIR/examples/calculator-example.png
    \endcode

    You can filter the images in an image directory using the \l
    {images.fileextensions} {\c images.fileextensions} variable.  The
    general idea behind the \l {images.fileextensions} {\c images.fileextensions} 
    variable is to enable different image format for different output format.

    \warning The \l {images.fileextensions} {\c images.fileextensions}
    variable's functionality is preliminay since QDoc at this point
    only support HTML.

    See also \l images and \l images.fileextensions.

    \target images-variable
    \section1 images 

    The \c images variable allows you to specify individual image
    files in addition to those located in the directories specified by
    the \l {imagedirs} {\c imagedirs} variable.

    \code
        images = $QTDIR/doc/src/images/calculator-example.png
    \endcode

    When processing the \c images variable, QDoc behaves in the same
    way as it does when processing the \l {imagedirs} {\c imagedirs}
    variable. For more information, see the \l {imagedirs} {\c
    imagedirs} variable.

    See also \l imagedirs and \l images.fileextensions.

    \target images.fileextensions-variable
    \section1 images.fileextensions 

    The images.fileextensions variable filters the files within an
    image directory.

    The variable's values (the extensions) are given as standard
    wildcard expressions.  The general syntax is: \tt
    {images.fileextensions.\e{format} = *.\e{extension}}.

    The idea is to enable different image format for different output
    format.

    \code
        images.fileextensions.HTML = *.png
        images.fileextensions.LOUT = *.eps
    \endcode

    Then, when processing the \l {image-command} {\\image} and \l
    {inlineimage-command} {\\inlineimage} commands, QDoc will only
    search for files with extensions specified in the output format's
    associated image extension variable.

    \warning This is preliminary functionality since QDoc at this
    point only support HTML.

    The default extensions for HTML are *.png, *.jpg, *.jpeg and
    *.gif.

    You can add a file extension to the filter using '+='. For
    example:

    \code
        images.fileextensions.HTML += *.eps
    \endcode

    See also \l imagedirs and \l images.

    \target language-variable
    \section1 language 

    The \c language variable specifies the language of the source code
    that is used in the documentation.

    Currently, C++ is the only language that QDoc understands. It is
    also the default language, and doesn't really need to be
    specified. But for example in \l qt.qdocconf:

    \code
        language = Cpp
    \endcode

    identifies the language of the Qt source code as C++.

    \target macro-variable
    \section1 macro 

    The \c macro variable can be used to create your own QDoc
    commands.

    The general syntax is \tt {macro.\e{command} =
    "\e{definition}}". The definition can be described using QDoc
    syntax. In addition it is possible to provide an HTML definition
    by appending .HTML to the variable.

    For example in \l qt.qdocconf:

    \code
        macro.gui              = "\\bold"
        macro.raisedaster.HTML = "<sup>*</sup>"
    \endcode

    makes sure that the \\gui command renders its argument using a
    bold font, and that \\raisedaster renders a '*'.

    \target naturallanguage-variable
    \section1 naturallanguage 

    The \c naturallanguage variable specifies the natural language
    used for the documentation generated by qdoc.

    \code
        naturallanguage = zh-Hans
    \endcode

    By default, the natural language is \c en for compatibility with
    legacy documentation.

    qdoc will add the natural language information to the HTML it
    generates, using the \c lang and \c xml:lang attributes.

    See also \l {sourceencoding-variable} {sourceencoding}, 
    \l {outputencoding-variable} {outputencoding},
    \l{http://www.w3.org/TR/xhtml1/#C_7} 
    {C.7. The lang and xml:lang Attributes} and
    \l{http://www.w3.org/TR/i18n-html-tech-lang/#ri20040429.113217290}
    {Best Practice 13: Using Hans and Hant codes}.

    \target outputdir-variable
    \section1 outputdir 

    The \c outputdir variable specifies the directory where QDoc will
    put the generated documentation.

    In qt.qdocconf:

    \code
        outputdir = $QTDIR/doc/html
    \endcode

    locates the generated Qt reference documentation in
    $QTDIR/doc/html. For example, the documentation of the QWidget
    class is located in

    \code
        $QTDIR/doc/html/qwidget.html
    \endcode

    The associated images will be put in an \c images subdirectory.

    \warning When running QDoc multiple times using the same output
    directory, all files from the previous run will be lost.

    \target outputencoding-variable
    \section1 outputencoding 

    The \c outputencoding variable specifies the encoding used for the
    documentation generated by qdoc.

    \code
        outputencoding = UTF-8
    \endcode

    By default, the output encoding is \c ISO-8859-1 (Latin1) for
    compatibility with legacy documentation. When generating
    documentation for some languages, particularly non-European
    languages, this is not sufficient and an encoding such as UTF-8 is
    required.

    qdoc will encode HTML using this encoding and generate the correct
    declarations to indicate to browsers which encoding is being
    used. The \l naturallanguage configuration variable should also be
    specified to provide browsers with a complete set of character
    encoding and language information.

    See also \l outputencoding and \l naturallanguage.

    \target outputformats-variable
    \section1 outputformats 

    The \c outputformats variable specifies the format of
    the generated documentation.

    Currently, QDoc only supports the HTML format. It is also
    the default format, and doesn't need to be specified.

    \target outputprefixes
    \section1 outputprefixes

    The \c outputprefixes variable specifies a mapping between types of files
    and the prefixes to prepend to the HTML file names in the generated
    documentation.

    \code
        outputprefixes = QML
        outputprefixes.QML = qt-components-
    \endcode

    By default, files containing the API documentation for QML elements
    or components are prefixed with "qml-". In the above example, the
    prefix "qt-components-" is used instead.

    \target qhp-variable
    \section1 qhp 

    The \c qhp variable is used to define the information to be
    written out to Qt Help Project (\c{qhp}) files.

    See the \l{Creating Help Project Files} chapter for information
    about this process.


    \target slow-variable
    \section1 slow 

    The \c slow variable specifies whether QDoc should do
    time-consuming processing, such as syntax highlighting.  The
    default value is false.

    \note This option has been replaced by the \l{syntaxhighlighting} option.

    For compatibility, the \c -slow command-line option has been
    retained. This has the effect of enabling syntax highlighting.

    \target sourcedirs-variable
    \section1 sourcedirs 

    The \c sourcedirs variable specifies the directories containing
    the \c .cpp or \c .qdoc files used in the documentation.

    For example in \l qt.qdocconf

    \code
        sourcedirs = $QTDIR/src \
                     $QTDIR/doc/src \
                     $QTDIR/extensions/activeqt \
                     $QTDIR/extensions/motif \
                     $QTDIR/tools/designer/src/lib/extension \
                     $QTDIR/tools/designer/src/lib/sdk \
                     $QTDIR/tools/designer/src/lib/uilib
    \endcode

    When executed, the first QDoc will do is to read through the
    headers specified in the \l {header-command} {\c header} variable,
    and the ones located in the directories specified in the \c
    headerdir variable (including all subdirectories), building an
    internal structure of the classes and their functions.

    Then it will read through the sources specified in the \l
    {sources} {\c sources}, and the ones located in the directories
    specified in the \l {sourcedirs} {\c sourcedirs} varible
    (including all subdirectories), merging the documentation with the
    structure it retrieved from the header files.

    If both the \c sources and \c sourcedirs variables are defined,
    QDoc will read through both, first \l {sources} {\c sources} then
    \c sourcedirs.

    In the specified directories, QDoc will only read the files with
    the fileextensions specified in the \l {sources.fileextensions}
    {\c sources.fileextensions} variable. The default extensions are
    *.c++, *.cc, *.cpp and *.cxx. The files specified by \l {sources}
    {\c sources} will be read independent of their fileextensions.

    See also \l {sources-variable} {sources} and 
    \l {sources.fileextensions-variable} {sources.fileextensions}.

    \target sourceencoding-variable
    \section1 sourceencoding 

    The \c sourceencoding variable specifies the encoding used for the
    source code and documentation.

    \code
        sourceencoding = UTF-8
    \endcode

    By default, the source encoding is \c ISO-8859-1 (Latin1) for
    compatibility with legacy documentation. For some languages,
    particularly non-European languages, this is not sufficient and an
    encoding such as UTF-8 is required.

    Although qdoc will use the encoding to read source and
    documentation files, limitations of C++ compilers may prevent you
    from using non-ASCII characters in source code comments.  In cases
    like these, it is possible to write API documentation completely
    in documentation files.

    See also \l {naturallanguage-variable} {naturallanguage} and 
    \l {outputencoding-variable} {outputencoding}.

    \target sources-variable
    \section1 sources 

    The \c sources variable allows you to specify individual source
    files in addition to those located in the directories specified by
    the \l {sourcedirs-variable} {sourcedirs} variable.

    \code
        sources = $QTDIR/src/gui/widgets/qlineedit.cpp \
                  $QTDIR/src/gui/widgets/qpushbutton.cpp
    \endcode

    When processing the \c sources variable, QDoc behaves in the same
    way as it does when processing the \l {sourcedirs-variable}
    {sourcedirs} variable. For more information, see the \l
    {sourcedirs-variable} {sourcedirs} variable.

    See also \l {sourcedirs-variable} {sourcedirs}.

    \target sources.fileextensions-variable
    \section1 sources.fileextensions 

    The \c sources.fileextensions variable filters the files within a
    source directory.

    When processing the source files specified in the \l {sourcedirs}
    {\c sourcedirs} variable, QDoc will only read the files with the
    fileextensions specified in the \c sources.fileextensions
    variable. In this way QDoc avoid spending time reading irrelevant
    files.

    The default extensions are *.c++, *.cc, *.cpp and *.cxx.

    The extensions are given as standard wildcard expressions.  You
    can add a file extension to the filter using '+='. For example:

    \code
        sources.fileextensions += *.CC
    \endcode

    \warning The above assignment may not work as described.

    See also \l {sourcedirs-variable} {sourcedirs} and \l
    (sources-variable} {sources}.


    \target spurious-variable
    \section1 spurious 

    The \c spurious variable excludes specified QDoc warnings from the
    output.  The warnings are specified using standard wildcard
    expressions.

    \code
        spurious = "Cannot find .*" \
        "Missing .*"
    \endcode

    makes sure that warnings matching either of these expressions,
    will not be part of the output when running QDoc. For example
    would the following warning be omitted from the output:

    \code
        qt-4.0/src/opengl/qgl_mac.cpp:156: Missing parameter name
    \endcode

    \target syntaxhighlighting
    \section1 syntaxhighlighting

    The \c syntaxhighlighting variable specifies whether QDoc should
    perform syntax highlighting on source code quoted in the
    documentation it generates.

    \code
        syntaxhighlighting = true
    \endcode

    will enable syntax highlighting for all supported programming
    languages.

    \target tabsize-variable
    \section1 tabsize 

    The \c tabsize variable defines the size of a tab character.

    \code
    tabsize = 4
    \endcode

    will give the tab character the size of 4 spaces.  The default
    value of the variable is 8, and doesn't need to be specified.

    \target tagfile-variable
    \section1 tagfile 
 
    The \c tagfile variable specifies the Doxygen tag file to be
    written when HTML is generated.

    \target version-variable
    \section1 version 

    The \c version variable specifies the version number of the
    documented software.

    \code
        version = 4.0.1
    \endcode

    When a version number is specified (using the \tt{\l version} or
    \tt {\l versionsym} variables in a \c .qdocconf file), it is
    accessible through the corresponding \\version command for use in
    the documentation.

    \warning The \\version command's functionality is not fully
    implemented; currently it only works within raw HTML code.

    See also \l versionsym.

    \target versionsym-variable
    \section1 versionsym 

    The \c versionsym variable specifies a C++ preprocessor symbol
    that defines the version number of the documented software.

    For example in \l qt.qdocconf:

    \code
        versionsym = QT_VERSION_STR
    \endcode

    QT_VERSION_STR is defined in qglobal.h as follows

    \code
        #define QT_VERSION_STR   "4.0.1"
    \endcode

    When a version number is specified (using the \tt{\l version} or
    \tt {\l versionsym} variables in a \c .qdocconf file), it is
    accessible through the corresponding \\version command for use in
    the documentation.

    \warning The \\version command's functionality is not fully
    implemented; currently it only works within raw HTML code.

    See also \l {version} {\\version}.
*/

/*!
    \page 22-creating-help-project-files.html
    \previouspage Generic Configuration Variables
    \contentspage Table of Contents
    \nextpage C++ Specific Configuration Variables

    \title Creating Help Project Files

    \section1 Overview
    
    Starting with Qt 4.4, Qt Assistant uses a different system for managing
    Qt documentation that requires QDoc to generate inventories of files in a
    format that is similar to the old style DCF format, but with additional
    features.

    Instead of hard-coding information about the documentation sets for Qt,
    QDoc allows configuration variables to be used to specify which pages are
    to be used in each documentation set it generates. These are specified as
    subvariables of the \c qch variable with each set declared using a unique
    identifier as a subvariable.

    For example, the configuration file for the Qt documentation defines a
    \c Qt documentation set by specifying information about the set as
    subvariables with the \c{qhp.Qt} prefix:

    \code
    qhp.Qt.file                = qt.qhp
    qhp.Qt.namespace           = com.trolltech.qt.440
    qhp.Qt.virtualFolder       = qdoc
    qhp.Qt.indexTitle          = Qt Reference Documentation
    qhp.Qt.indexRoot           = 
    qhp.Qt.extraFiles          = classic.css images/qt-logo.png
    qhp.Qt.filterAttributes    = qt 4.4.0 qtrefdoc
    qhp.Qt.customFilters.Qt.name = Qt 4.4.0
    qhp.Qt.customFilters.Qt.filterAttributes = qt 4.4.0
    qhp.Qt.subprojects         = classes overviews examples
    qhp.Qt.subprojects.classes.title = Classes
    qhp.Qt.subprojects.classes.indexTitle = Qt's Classes
    qhp.Qt.subprojects.classes.selectors = class
    qhp.Qt.subprojects.overviews.title = Overviews
    qhp.Qt.subprojects.overviews.indexTitle = All Overviews and HOWTOs
    qhp.Qt.subprojects.overviews.selectors = fake:page,group,module
    qhp.Qt.subprojects.examples.title = Tutorials and Examples
    qhp.Qt.subprojects.examples.indexTitle = Qt Examples
    qhp.Qt.subprojects.examples.selectors = fake:example
    \endcode

    To create a table of contents for a manual, create a subproject with
    a \c{type} property and set it to \c{manual}. The page in the documentation
    referred to by the \c{indexTitle} property must contain a list of links
    that acts as a table of contents for the whole manual. QDoc will take the
    information in this list and create a table of contents for the subproject.

    For example, the configuration file for Qt Creator defines only one
    subproject for its documentation, including all the documentation in a
    single manual:

    \code
    qhp.QtCreator.subprojects = manual
    qhp.QtCreator.subprojects.manual.title = Qt Creator Manual
    qhp.QtCreator.subprojects.manual.indexTitle = Qt Creator Manual
    qhp.QtCreator.subprojects.manual.type = manual
    \endcode

    In this example, the page entitled "Qt Creator Manual" contains a nested
    list of links to pages in the documentation which is duplicated in
    Qt Assistant's Contents tab.
*/

/*!
    \page 23-qdoc-configuration-cppvariables.html
    \previouspage Creating Help Project Files
    \contentspage Table of Contents
    \nextpage HTML Specific Configuration Variables

    \title C++ Specific Configuration Variables

    The C++ specific configuration variables are provided to avoid
    erroneous documentation due to non-standard C++ constructs.

    \target Cpp.ignoredirectives-variable
    \section1  Cpp.ignoredirectives 

    The \c Cpp.ignoredirectives variable makes QDoc ignore the
    specified non-standard constructs, within C++ source code.

    If not specified by the \tt {\l Cpp.ignoretokens} or \tt {\l
    Cpp.ignoredirectives} variables, non-standard constructs
    (typically macros) can result in erroneous documentation.

    In \l qt.qdocconf:

    \code
    Cpp.ignoredirectives = Q_DECLARE_INTERFACE \
                           Q_DECLARE_OPERATORS_FOR_FLAGS \
                           Q_DECLARE_PRIVATE \
                           Q_DECLARE_PUBLIC \
                           Q_DISABLE_COPY \
                           Q_DUMMY_COMPARISON_OPERATOR \
                           Q_ENUMS \
                           Q_FLAGS \
                           Q_INTERFACES \
                           __attribute__
    \endcode

    makes sure that when processing the code below, for example, QDoc
    will simply ignore the 'Q_ENUMS' and 'Q_FLAGS' expressions:

    \code
        class Q_CORE_EXPORT Qt {
            Q_OBJECT
            Q_ENUMS(Orientation TextFormat BackgroundMode
                    DateFormat ScrollBarPolicy FocusPolicy
                    ContextMenuPolicy CaseSensitivity
                    LayoutDirection ArrowType)
            Q_ENUMS(ToolButtonStyle)
            Q_FLAGS(Alignment)
            Q_FLAGS(Orientations)
            Q_FLAGS(DockWidgetAreas)

          public:
            ...
        };
    \endcode

    The Q_OBJECT macro, however, is an exception: QDoc recognizes this
    particular non-standard construct, so there is no need specifying
    it using the \tt {\l Cpp.ignoredirectives} variable.

    Regarding the Q_CORE_EXPORT macro; see the documentation of the
    \tt {\l Cpp.ignoretokens} variable.

    See also \l Cpp.ignoretokens.

    \target Cpp.ignoretokens-variable
    \section1  Cpp.ignoretokens 

    The \c Cpp.ignoretokens variable makes QDoc ignore the specified
    non-standard constructs, within C++ source code.

    If not specified by the \tt {\l Cpp.ignoretokens} or \tt {\l
    Cpp.ignoredirectives} variables, non-standard constructs
    (typically macros) can result in erroneous documentation.

    In \l qt.qdocconf:

    \code
    Cpp.ignoretokens = QAXFACTORY_EXPORT \
                       QM_EXPORT_CANVAS \
                       ...
                       Q_COMPAT_EXPORT \
                       Q_CORE_EXPORT \
                       Q_EXPLICIT \
                       Q_EXPORT \
                       ...
                       Q_TYPENAME        \
                       Q_XML_EXPORT
    \endcode

    makes sure that when processing the code below, for example, QDoc
    will simply ignore the 'Q_CORE_EXPORT' expression:

    \code
        class Q_CORE_EXPORT Qt {
            Q_OBJECT
            Q_ENUMS(Orientation TextFormat BackgroundMode
                    DateFormat ScrollBarPolicy FocusPolicy
                    ContextMenuPolicy CaseSensitivity
                    LayoutDirection ArrowType)
            Q_ENUMS(ToolButtonStyle)
            Q_FLAGS(Alignment)
            Q_FLAGS(Orientations)
            Q_FLAGS(DockWidgetAreas)
          public:
            ...
        };
    \endcode

    Regarding the Q_OBJECT, Q_ENUMS and Q_FLAGS macros; see the
    documentation of the \tt {\l Cpp.ignoredirectives} variable.

    See also \l Cpp.ignoredirectives.
*/

/*!
    \page 24-qdoc-configuration-htmlvariables.html
    \previouspage C++ Specific Configuration Variables
    \contentspage Table of Contents
    \nextpage Supporting Derived Projects

    \title HTML Specific Configuration Variables

    The HTML specific configuration variables define the generated
    documentation's style, or define the contents of the
    documentation's footer or postheader. The format of the variable
    values are raw HTML.

    \target HTML.footer-variable
    \section1 HTML.footer 

    The \c HTML.footer variable defines the content of the generated
    HTML documentation's footer.

    The footer is rendered at the bottom of the generated
    documentation page.

    The variable's value is given as raw HTML code enclosed by
    quotation marks. Note that if the value spans several lines, each
    line needs to be enclosed by quotation marks.

    For example in \l qt.qdocconf:

    \code
        HTML.footer = "<p /><address><hr /><div align=\"center\">\n" \
                      ...
                      "</tr></table></div></address>"
    \endcode

    The complete variable entry in \l qt.qdocconf provides the
    standard footer of the \l {http://qt.nokia.com/doc/4.0/index.html}
    {Qt Reference Documentation}.

    \target HTML.postheader-variable
    \section1 HTML.postheader 

    The \c HTML.postheader variable defines the content of the
    generated HTML documentation's postheader.

    The header is rendered at the top of the generated documentation
    page.

    The variable's value is given as raw HTML enclosed by quotation
    marks. Note that if the value spans several lines, each line needs
    to be enclosed by quotation marks.

    For example in \l qt.qdocconf:

    \code
     HTML.postheader = "<table border=\"0\"..." \
                       ...
                       "<img src=\"images/trolltech-logo.png\" \
                       "align=\"right\" width=\"203\" height=\"32\""\
                      "border=\"0\" />" \
                       "</td></tr>" \
                       "</table>"
    \endcode

    The complete variable entry in \l qt.qdocconf provides the
    standard header of the \l {http://qt.nokia.com/doc/4.0/index.html}
    {Qt Reference Documentation}.

    \target HTML.style-variable
    \section1 HTML.style 

    The HTML.style variable defines the style for
    the generated HTML documentation.

    The variable's value is given as raw HTML enclosed by quotation
    marks. Note that if the value spans several lines, each line needs
    to be enclosed by quotation marks.

    For example in \l qt.qdocconf:

    \code
    HTML.style = "h3.fn,span.fn" \
                 "{ margin-left: 1cm; text-indent: -1cm; }\n" \
                 "a:link { color: #004faf; text-decoration: none }\n" \
                 "a:visited" \
                 "{ color: #672967; text-decoration: none }\n" \
                 "td.postheader { font-family: sans-serif }\n" \
                 "tr.address { font-family: sans-serif }\n" \
                 "body { background: #ffffff; color: black; }"
    \endcode

    provides the HTML style for the \l
    {http://qt.nokia.com/doc/4.0/index.html} {Qt Reference
    Documentation}.

    \target HTML.stylesheets-variable
    \section1 HTML.stylesheets 

    The HTML.stylesheets variable defines a list of stylesheets
    to use for the generated HTML documentation.

    Using separate stylesheets for the documentation makes it easier
    to customize and experiment with the style used once the contents
    has been generated. Typically, it is only necessary to define a
    single stylesheet for any set of documentation; for example:

    \code
    HTML.stylesheets = classic.css
    \endcode

    QDoc expects to find stylesheets in the directory containing the
    \l qt.qdocconf file, and it will copy those specified to the output
    directory alongside the HTML pages.

*/

/*!
    \page 25-qdoc-configuration-derivedprojects.html
    \previouspage HTML Specific Configuration Variables
    \contentspage Table of Contents
    \nextpage Compatibility Issues

    \title Supporting Derived Projects

    Some configuration variables allow you to use QDoc to support
    Qt-based projects; i.e allow your project to contain links to the
    online Qt documentation. This means that QDoc will be able to
    create links to the class reference documentation, without any
    explicit linking command.

    \target description-variable
    \section1 description 

    The description variable holds a short description of the
    associated project.

    See also \l project.

    \target indexes-variable
    \section1 indexes 

    The \c indexes variable lists the index files that will be used to
    generate references.

    For example. to make a derived Qt project contain links to the Qt
    Reference documentation, you need to specify the associated index
    file:

    \code
        indexes = $QTDIR/doc/html/qt.index
    \endcode

    See also \l project and \l url.

    \target project-variable
    \section1 project 

    The \c project variable provides a name for the project associated
    with the \c .qdocconf file.

    The project's name is used to form a file name for the associated
    project's \e index file.

    \code
        project = QtMotif
    \endcode

    This will cause an index file called \c qtmotif.index to be
    created.

    See also \l description and \l indexes.

    \target url-variable
    \section1 url 

    The \c url variable holds the base URL for the reference
    documentation associated with the current project.

    The URL is stored in the generated index file for the
    project. When we use the index on its own, QDoc will use this as
    the base URL when constructing links to classes, functions, and
    other things listed in the index.

    \code
    project     = Qt
    description = Qt Reference Documentation
    url         = http://qt.nokia.com/doc/4.0

         ...
    \endcode

    This makes sure that whenever \c qt.index is used to generate
    references to for example Qt classes, the base URL is \c
    http://qt.nokia.com/doc/4.0.

    See also \l indexes.

    \target howto
    \section1 How to Support Derived Projects

    This feature makes use of the comprehensive indexes generated by
    QDoc when it creates the Qt reference documentation.

    For example, \l qt.qdocconf (the configuration file for Qt)
    contains the following variable definitions:

    \code
        project     = Qt
        description = Qt Reference Documentation
        url         = http://qt.nokia.com/doc/4.0

        ...
    \endcode

    The \l project variable name is used to form a file name for the
    index file; in this case the \c qt.index file is created.  The \l
    url is stored in the index file. Later, when we use the index on
    its own, QDoc will use this as the base URL when constructing
    links to classes, functions, and other things listed in the index.

    In a mini-project, you can use an index file by defining an \l
    indexes configuration variable in your \c .qdocconf file.

    For example, you can create a \c qtmotif.qdocconf file to help you
    check the QtMotif documentation (which is part of Qt Solutions):

    \code
        include($QTDIR/tools/qdoc3/test/compat.qdocconf)

        project                 = QtMotif
        description             = QtMotif Class Documentation
        url                     = http://www.trolltech.com/products/solutions/catalog/4/Migration/qtmotifextension

        indexes                 = $QTDIR/doc/html/qt.index

        outputdir               = html

        headerdirs              = src
        sourcedirs              = src \
                                  examples
        sources.fileextensions  = "*.cpp *.qdoc *.doc"

        exampledirs = examples
    \endcode

    The code above requires that you run QDoc from the directory that
    contains this file. You need to include the compat.qdocconf
    file for compatibility reasons; this is further explained in the
    \l {Compatibility Issues} section.

    \bold {To resolve the actual links to Qt classes, the
    mini-project's \c .qdocconf file needs to assign a value to the \l
    indexes variable; \c $QTDIR/doc/html/qt.index makes sure that you
    always use the updated index file for the Qt documentation.}

    The only disadvantages with this approach are the extra file that
    QDoc has to generate and the time it takes to do so. Reading the
    index back again later isn't instantaneous either, but it's
    quicker than processing all the Qt classes each time you need to
    write a new document.
*/

/*!
    \page 26-qdoc-commands-compatibility.html
    \previouspage Supporting Derived Projects
    \contentspage Table of Contents
    \nextpage qt.qdocconf

    \title Compatibility Issues

    \section1 General Description

    \target reason

    Because QDoc evolves to suit our documentation needs, there can be
    some compatibility issues when converting to a new version.

    To allow you to proceed at your own speed when converting your
    qdoc comments to use new qdoc commands and formats, the ability to
    include a configuration file called \c {compat.qdocconf} is
    provided.

    A \c {compat.qdocconf} file is a separate configuration file,
    which you include in your main configuration file. It typically
    contains the mappings from old qdoc commands to new ones using 
    \l {alias} and 
    \l {22-qdoc-configuration-generalvariables.html#macro-variable}
    {macro} configuration variables.

    \section1 Qt Compatibility

    In Qt's documentation there still exist occurrences of old
    commands, and the Qt \l {qt.qdocconf} {configuration file} needs to
    include the compat.qdocconf file tailored for Qt. For more
    detailed information about the commands creating compatibility
    issues, see the \l {Command Comments} {command comments}.

    \section1 Qt's current compat.qdocconf file

    \quotefile files/compat.qdocconf

    \section1 Command Comments

    \table
    \header
        \o New Command
        \o Old Command
        \o Description

    \row
        \o \\i \target i-versus-e
        \o \\e
        \o Earlier we
           used the \\i command to indicate a list or table item, and
           the \\e command for rendering in italic. Now we want the
           \\i command to render in italic discarding the
           \\e command name.

           \bold {We still need to use the \\e command to render in
           italic in new documentation for \l {reason} {compatibility
           reasons}}.

    \row
        \o \\include \target include-versus-input
        \o \\input
        \o The \\include command was previously used to quote the
           complete contents of a source file, now we want to use the
           command to include separate documentation.
           That is the functionality of the old \\input command
           which name we want to discard.

           \bold {We still need to use the \\input command to include
           plain text in new documentation for \l
           {reason} {compatibility reasons}}.

    \row
        \o \\quotefile \target quotefile-versus-include
        \o \\include
        \o Earlier, we have used the \\quotefile command to
           quote from file, i.e. quote parts from file, and the
           \\include command to quote the entire file. Since we now want
           \\include to include separate documentation, we change the use of
           \\quotefile to quote a complete source file.

           \bold {We still need to use the \\include command to quote
           the entire contents of a source file in new documentation
           for \l {reason} {compatibility reasons}}.

    \row
        \o \\quotefromfile \target quotefromfile-versus-quotefile
        \o \\quotefile
        \o Earlier, we have used the \\quotefile command to
           quote from file, i.e. quote parts from file. Since we now want
           that command to quote an entire file, we introduce the new
           \\quotefromfile command to quote from file.

           \bold {Use \l {quotefromfile-command} {\\quotefromfile} to quote
           parts from a source file in new documentation}.

    \row
        \o \\o \target o-versus-i
        \o \\i
        \o Earlier we used the \\i command to indicate list items
           and table items. Since we now want the \\i command to render
           in italic instead, we introduce the new \\o command for
           this purpose.

           \bold {Use \l {o-command} {\\o} to indicate list and table items in
           new documentation}.

    \row
        \o \\quotation \target quotation-versus-quote
        \o \\quote
        \o These commands are equivalent, and represent a simple name
          change.

          \bold {Use \l {quotation} {\\quotation} in new
          documentation}.

    \row
        \o \\image \target image-versus-img
        \o \\img
        \o These commands are equivalent, and represent a simple name
           change.

           \bold {Use \l {image-command} {\\image} in new documentation}.

    \endtable
*/

/*!
    \page 27-qdoc-commmands-alphabetical.html
    \previouspage Introduction to QDoc
    \contentspage Table of Contents
    \nextpage Topic Commands

    \title Command Index

    This is a complete, alphabetized list of the QDoc commands.

    \list

    \o \l {04-qdoc-commands-textmarkup.html#a-command} {\\a}
    \o \l {11-qdoc-commands-specialcontent.html#abstract-command} {\\abstract}
    \o \l {06-qdoc-commands-includecodeinline.html#badcode-command} {\\badcode}
    \o \l {04-qdoc-commands-textmarkup.html#bold-command} {\\bold}
    \o \l {11-qdoc-commands-specialcontent.html#brief-command} {\\brief}
    \o \l {04-qdoc-commands-textmarkup.html#c-command} {\\c}
    \o \l {09-qdoc-commands-includingimages.html#caption-command} {\\caption}
    \o \l {05-qdoc-commands-documentstructure.html#chapter-command} {\\chapter}
    \o \l {13-qdoc-commands-topics.html#class-command} {\\class}
    \o \l {06-qdoc-commands-includecodeinline.html#code-command} {\\code}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#codeline-command} {\\codeline},
    \o \l {16-qdoc-commands-status.html#compat-command} {\\compat}
    \o \l {15-qdoc-commands-navigation.html#contentspage-command} {\\contentspage}
    \o \l {16-qdoc-commands-status.html#default-command} {\\default} \span {class="newStuff"} {(new)}
    \o \l {04-qdoc-commands-textmarkup.html#div-command} {\\div} \span {class="newStuff"} {(new)}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#dots-command} {\\dots}
    \o \l {12-0-qdoc-commands-miscellaneous.html#else-command} {\\else}
    \o \l {12-0-qdoc-commands-miscellaneous.html#endif-command} {\\endif}
    \o \l {13-qdoc-commands-topics.html#enum-command} {\\enum}
    \o \l {13-qdoc-commands-topics.html#example-command} {\\example}
    \o \l {12-0-qdoc-commands-miscellaneous.html#expire-command} {\\expire}
    \o \l {13-qdoc-commands-topics.html#externalpage-command} {\\externalpage}
    \o \l {13-qdoc-commands-topics.html#fn-command} {\\fn}
    \o \l {11-qdoc-commands-specialcontent.html#footnote-command} {\\footnote}
    \o \l {12-0-qdoc-commands-miscellaneous.html#generatelist-command} {\\generatelist}
    \o \l {13-qdoc-commands-topics.html#group-command} {\\group}
    \o \l {10-qdoc-commands-tablesandlists.html#header-command} {\\header}
    \o \l {13-qdoc-commands-topics.html#headerfile-command} {\\headerfile}
    \o \l {04-qdoc-commands-textmarkup.html#i-command} {\\i}
    \o \l {12-0-qdoc-commands-miscellaneous.html#if-command} {\\if}
    \o \l {09-qdoc-commands-includingimages.html#image-command} {\\image}
    \o \l {12-0-qdoc-commands-miscellaneous.html#include-command} {\\include}
    \o \l {15-qdoc-commands-navigation.html#indexpage-command} {\\indexpage}
    \o \l {19-qdoc-commands-grouping.html#ingroup-command} {\\ingroup}
    \o \l {18-qdoc-commands-relating.html#inherits-command}{\\inherits} \span {class="newStuff"} {(new)}
    \o \l {19-qdoc-commands-grouping.html#inmodule-command} {\\inmodule}
    \o \l {09-qdoc-commands-includingimages.html#inlineimage-command} {\\inlineimage}
    \o \l {16-qdoc-commands-status.html#internal-command} {\\internal}
    \o \l {08-qdoc-commands-creatinglinks.html#keyword-command} {\\keyword}
    \o \l {08-qdoc-commands-creatinglinks.html#l-command} {\\l}
    \o \l {11-qdoc-commands-specialcontent.html#legalese-command} {\\legalese}
    \o \l {10-qdoc-commands-tablesandlists.html#list-command} {\\list}
    \o \l {13-qdoc-commands-topics.html#macro-command} {\\macro}
    \o \l {19-qdoc-commands-grouping.html#mainclass-command} {\\mainclass}
    \o \l {12-0-qdoc-commands-miscellaneous.html#meta-command} {\\meta}
    \o \l {13-qdoc-commands-topics.html#module-command} {\\module}
    \o \l {13-qdoc-commands-topics.html#namespace-command} {\\namespace}
    \o \l {15-qdoc-commands-navigation.html#nextpage-command} {\\nextpage}
    \o \l {06-qdoc-commands-includecodeinline.html#newcode-command} {\\newcode}
    \o \l {17-qdoc-commands-thread.html#nonreentrant-command} {\\nonreentrant}
    \o \l {10-qdoc-commands-tablesandlists.html#o-command} {\\o}
    \o \l {16-qdoc-commands-status.html#obsolete-command} {\\obsolete}
    \o \l {06-qdoc-commands-includecodeinline.html#oldcode-command} {\\oldcode}
    \o \l {12-0-qdoc-commands-miscellaneous.html#omit-command} {\\omit}
    \o \l {10-qdoc-commands-tablesandlists.html#omitvalue-command} {\\omitvalue}
    \o \l {18-qdoc-commands-relating.html#overload-command} {\\overload}
    \o \l {13-qdoc-commands-topics.html#page-command} {\\page}
    \o \l {05-qdoc-commands-documentstructure.html#part-command} {\\part}
    \o \l {16-qdoc-commands-status.html#preliminary-command} {\\preliminary}
    \o \l {15-qdoc-commands-navigation.html#previouspage-command} {\\previouspage}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printline-command} {\\printline}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printto-command} {\\printto}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#printuntil-command} {\\printuntil}
    \o \l {13-qdoc-commands-topics.html#property-command} {\\property}
    \o \l {13-qdoc-commands-topics.html#qmlattachedproperty-command} {\\qmlattachedproperty} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlattachedsignal-command} {\\qmlattachedsignal} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlbasictype-command} {\\qmlbasictype} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlclass-command} {\\qmlclass} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlmethod-command} {\\qmlmethod} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlproperty-command} {\\qmlproperty} \span {class="newStuff"} {(new)}
    \o \l {13-qdoc-commands-topics.html#qmlsignal-command} {\\qmlsignal} \span {class="newStuff"} {(new)}
    \o \l {11-qdoc-commands-specialcontent.html#quotation-command} {\\quotation}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#quotefile-command} {\\quotefile}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#quotefromfile-command} {\\quotefromfile}
    \o \l {12-0-qdoc-commands-miscellaneous.html#raw-command} {\\raw} \span {class="newStuff"} {(avoid)}
    \o \l {17-qdoc-commands-thread.html#reentrant-command} {\\reentrant}
    \o \l {18-qdoc-commands-relating.html#reimp-command} {\\reimp}
    \o \l {18-qdoc-commands-relating.html#relates-command} {\\relates}
    \o \l {10-qdoc-commands-tablesandlists.html#row-command} {\\row}
    \o \l {08-qdoc-commands-creatinglinks.html#sa-command} {\\sa}
    \o \l {05-qdoc-commands-documentstructure.html#sectionOne-command} {\\section1}
    \o \l {05-qdoc-commands-documentstructure.html#sectionTwo-command} {\\section2}
    \o \l {05-qdoc-commands-documentstructure.html#sectionThree-command} {\\section3}
    \o \l {05-qdoc-commands-documentstructure.html#sectionFour-command} {\\section4}
    \o \l {13-qdoc-commands-topics.html#service-command} {\\service}
    \o \l {16-qdoc-commands-status.html#since-command} {\\since}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipline-command} {\\skipline}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipto-command} {\\skipto}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#skipuntil-command} {\\skipuntil}
    \o \l {07-0-qdoc-commands-includingexternalcode.html#snippet-command} {\\snippet},
    \o \l {04-qdoc-commands-textmarkup.html#span-command} {\\span} \span {class="newStuff"} {(new)}
    \o \l {15-qdoc-commands-navigation.html#startpage-command} {\\startpage}
    \o \l {04-qdoc-commands-textmarkup.html#sub-command} {\\sub}
    \o \l {20-qdoc-commands-namingthings.html#subtitle-command} {\\subtitle}
    \o \l {04-qdoc-commands-textmarkup.html#sup-command} {\\sup}
    \o \l {10-qdoc-commands-tablesandlists.html#table-command} {\\table}
    \o \l {11-qdoc-commands-specialcontent.html#tableofcontents-command} {\\tableofcontents}
    \o \l {08-qdoc-commands-creatinglinks.html#target-command} {\\target}
    \o \l {17-qdoc-commands-thread.html#threadsafe-command} {\\threadsafe}
    \o \l {20-qdoc-commands-namingthings.html#title-command} {\\title}
    \o \l {04-qdoc-commands-textmarkup.html#tt-command} {\\tt}
    \o \l {13-qdoc-commands-topics.html#typedef-command} {\\typedef}
    \o \l {04-qdoc-commands-textmarkup.html#underline-command} {\\underline}
    \o \l {13-qdoc-commands-topics.html#variable-command} {\\variable}
    \o \l {10-qdoc-commands-tablesandlists.html#value-command} {\\value}
    \o \l {11-qdoc-commands-specialcontent.html#warning-command} {\\warning}
    \endlist
*/

/*!
    \externalpage http://qt.nokia.com/about
    \title About Qt
*/