![UML use case include relationship shows that behavior of the included use case is inserted into the behavior of the including use case. UML use case include relationship shows that behavior of the included use case is inserted into the behavior of the including use case.](https://www.uml-diagrams.org/use-case-diagrams/use-case-include-split.png)
UML use case include relationship shows that behavior of the included use case is inserted into the behavior of the including use case.
![UML Use Case Diagram: Do generalisation children inherit include/extends from parent? - Stack Overflow UML Use Case Diagram: Do generalisation children inherit include/extends from parent? - Stack Overflow](https://i.stack.imgur.com/c6S0D.png)
UML Use Case Diagram: Do generalisation children inherit include/extends from parent? - Stack Overflow
![requirements - Are using <<include>> and <<extend>> relationship in this use -case diagram actually same? - Software Engineering Stack Exchange requirements - Are using <<include>> and <<extend>> relationship in this use -case diagram actually same? - Software Engineering Stack Exchange](https://i.stack.imgur.com/Lg39Q.png)
requirements - Are using <<include>> and <<extend>> relationship in this use -case diagram actually same? - Software Engineering Stack Exchange
What is the difference between extend and include functions in a use case diagram and their uses? - Quora
![Use Case Diagram, UML Diagrams Example: "Include" and "Extend" Use Cases - Visual Paradigm Community Circle Use Case Diagram, UML Diagrams Example: "Include" and "Extend" Use Cases - Visual Paradigm Community Circle](https://circle.visual-paradigm.com/wp-content/uploads/2017/08/Use-Case-Diagram-Include-and-Extend-Use-Cases-1-1280x720.png)