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+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \page winsystem.html
+    \title Window System Specific Notes
+    \ingroup platform-specific
+
+    Qt is a cross-platform GUI toolkit, so almost the entire API is the
+    same on all platforms and window systems. If you wish to use
+    platform-specific features, and still maintain a platform-independent
+    source tree, you should protect the platform-specific code using the
+    appropriate \c{#ifdef} directives (see below).
+
+    Qt provides a few low-level global functions for fine-tuning
+    applications on specific platforms. See \l{Platform-Specific
+    Functions} for details.
+
+    \tableofcontents
+
+    For information about which platforms are supported by Qt, see the
+    \l{Platform Notes}. For information on distributing Qt applications, see
+    \l{Deploying Qt Applications}.
+
+    \target x11
+    \section1 Qt for X11
+
+    When compiling for this platform, the macro \c{Q_WS_X11} is defined.
+
+    \e{Not documented here. Please contact Qt's technical support team
+    if you have queries.}
+
+    See the \l{Qt for X11 Requirements} page for more information about the
+    libraries required to build Qt with as many features as possible.
+
+    \target win
+    \section1 Qt for Windows
+
+    When compiling for this platform, the macro \c{Q_WS_WIN} is defined.
+
+    \e{Not documented here. Please contact Qt's technical support team
+    if you have queries.}
+
+    \target macosx
+    \section1 Qt for Mac OS X
+
+    When compiling for this platform, the macro \c{Q_WS_MAC} is defined.
+
+    \list
+    \i \l{Qt for Mac OS X - Specific Issues}
+    \i \l{Qt is Mac OS X Native}
+    \endlist
+
+    \target qws
+    \section1 Qt for Embedded Linux
+
+    When compiling for this platform, the macro \c{Q_WS_QWS} is
+    defined (the window system is literally the Qt Window System). See
+    the \l{Qt for Embedded Linux} documentation for more information.
+*/