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For apps that use SAP, all your actions should be subclasses of SAPBaseAction which is in turn a subclass of IDDAction which is a subclass of Strut's Actionhttp://struts.apache.org/1.1/api/org/apache/struts/action/package-summary.html. (org.apache.struts.action is the core of the struts framework, providing the "Controller" aspect of a MVC model. Action is one of the classes in this core code.)
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