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Clicking on the link for the configuration browser will cause the Struts 2 framework to return this page to your browser.
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You can click on an action link to see the configuration for that action. For example clicking on the register action link results in this.
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You may then click on one of the tabs (Results, Exception Mappings, Interceptors, Properties, Validators) to get more information about how the Struts 2 framework is has configured that specific action.

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In the example application on the index.jsp is a link for displaying debugging information. This link includes the query string debug=browser. If you click on this link you'll see a table with columns that can be expanded and collapsed. The table contains the various objects and their state being managed by the Struts 2 framework.
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Note that to enable the correct display and interaction of the expand/collapse links on the debugging information web page you need to include the s:head tag in your JSP's head section (see index.jsp in the example application) and also include the Struts 2 dojo plugin in your application's class path. The Struts 2 dojo plugin is available as part of the Struts 2 download and from the Maven repository.

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