Use the Flow Design page of the Device Application Designer  to
	 create a flow design for the custom application screens.
        
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                In the Device Application Designer, click Flow Design.
            
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                In the Flow Design page, select a screen from the  menu and drag and drop it onto the Flow Design canvas.  
                 The Start icon on the Flow Design page is automatically attached to the first
		  screen you drag and drop onto the Flow Design page. You can change the target.
            
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                Add additional screens, as needed. 
            
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                Add connections between the screens.
            
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                Click Screen Design to add controls and actions to the screens.