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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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+ \example statemachine/twowaybutton
+ \title Two-way Button Example
+
+ The Two-way button example shows how to use \l{The State Machine
+ Framework} to implement a simple state machine that toggles the current
+ state when a button is clicked.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 0
+
+ The application's main() function begins by constructing the application
+ object, a button and a state machine.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 1
+
+ The state machine has two states; \c on and \c off. When either state is
+ entered, the text of the button will be set accordingly.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 2
+
+ When the state machine is in the \c off state and the button is clicked,
+ it will transition to the \c on state; when the state machine is in the \c
+ on state and the button is clicked, it will transition to the \c off
+ state.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 3
+
+ The states are added to the state machine; they become top-level (sibling)
+ states.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 4
+
+ The initial state is \c off; this is the state the state machine will
+ immediately transition to once the state machine is started.
+
+ \snippet examples/statemachine/twowaybutton/main.cpp 5
+
+ Finally, the button is resized and made visible, and the application event
+ loop is entered.
+
+*/