In a use case, what level of detail includes exhaustive, numbered steps with data flows?

The fully-dressed level of detail in a use case is characterized by its comprehensive approach to documenting the interactions between the user and the system. This level includes exhaustive, numbered steps that clearly outline the sequence of actions and the flow of data throughout the process. By employing this detailed structure, it ensures that every aspect of the scenario is captured, allowing for a complete understanding of the requirements and functionality.

In contrast, other levels of detail, such as brief or casual, provide only high-level overviews or simplified descriptions. These may mention key actions but lack the depth and specificity found in fully-dressed use cases. A summary level would similarly omit crucial details necessary for thorough analysis and implementation. This distinction makes the fully-dressed use case essential for complex systems where clarity and completeness are critical for stakeholders involved in design and development.