Final answer:
The additional documentation required besides the 4+1 view in software engineering includes a use case diagram, a sequence diagram, an activity diagram, and a class diagram.
Step-by-step explanation:
The documentation that is required in addition to the 4+1 view in software engineering includes:
- Use Case Diagram: The use case diagram represents the interactions between actors (users) and the system.
- Sequence Diagram: The sequence diagram shows the sequence of messages exchanged between objects or actors in a system.
- Activity Diagram: The activity diagram represents the flow of activities or processes within a system.
- Class Diagram: The class diagram depicts the structure and relationships between classes in the system.