Deleting an extend relationship on a use case diagram

How do you delete an include or extend from a use case diagram?

I don’t fully understand the question, what exactly do you mean with ‘an include or extend’?

The normal way to remove model elements, this includes the ‘links’ between the use cases and actors, is to select them and then press delete:


So if I wanted to remove the connection between ‘Open book’ and ‘Read book’ or that between ‘Read book’ and ‘Turn page’ all I’d have to do is click on either the line (arrow) itself or the label, then just press the del button.

You can also right click and use the ‘delete’ option found in the menu.

Hope this can help, if you meant something else then please share.

Thanks a lot Peter. I right clicked and cut and it worked.