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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms
+** and conditions contained in a signed written agreement between you
+** and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \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 statemachine/twowaybutton/main.cpp 0
+
+    The application's main() function begins by constructing the application
+    object, a button and a state machine.
+
+    \snippet 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 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 statemachine/twowaybutton/main.cpp 3
+
+    The states are added to the state machine; they become top-level (sibling)
+    states.
+
+    \snippet 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 statemachine/twowaybutton/main.cpp 5
+
+    Finally, the button is resized and made visible, and the application event
+    loop is entered.
+
+*/