By tracing use cases to business requirements, tests, or even other use cases you can more easily measure the impact of change on related requirements and verify coverage. To associate a use case document with a Rose use case, right-click on the use case in the Rose browser, and select Use Case Document New from the shortcut menu. The RequisitePro Word environment is launched and your template-based document is displayed, ready for editing. You can also associate an existing RequisitePro document to a Rose use case by using the Use Case Document Associate menu item. They have additional properties, such as attributes, traceability links, revision history, and, particularly for use cases, diagrams.
Attributes help manage scope.
Especially helpful in iterative development, attributes provide an easy way to scope manage each iteration of your project. They make more objective the process of deciding which use cases to implement in a particular release. Too often organizations decide which use cases to implement based upon personal agendas, emotions, or pet peeves. Poor decisions made early carry through to implementation and are more costly to change the farther the project gets in its lifecycle. Attributes provide a simple way to assign non-emotional weight to use cases and requirements alike.