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Comment: Migrated to Confluence 5.3

Constants provide a simple way to customize a Struts application by defining key settings that modify framework and plugin behavior. There are two key roles for constants. First, they are used to override settings like the maximum file upload size or whether the Struts framework should be in "devMode" or not, and so on. Second, they specify which Bean implementation, among multiple implementations of a given type, should be chosen.