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Structure of a Web Dynpro
Application 
A Web Dynpro application has the following structure:

The Web Dynpro project represents an external unit that contains different parts and can be deployed. The Web Dynpro applications are the parts of a Web Dynpro project that can be called from a Web browser.
Each Web Dynpro application contains exactly one Web Dynpro component (root component). A Web Dynpro component contains one or more windows, which are the visual representation of the Web Dynpro component. Windows consist of one or more nested views that contain the UI elements.
You establish a connection between a window of the Web Dynpro component and the application to bind the component to a Web Dynpro application. The interface view is used as the interface and there is exactly one interface view for each window.
