Use cases are typically written to document the normal flow of events. Exceptions that occur in the normal flow need not be documented as part of the use case description.

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Exceptions that occur in the normal flow should be documented in the use case description as part of the alternative or exception flow. This helps to ensure that the use case accurately reflects all possible scenarios and can be used as a comprehensive reference for system design and testing.

Use Cases Are Typically Written to Document the Normal Flow