How to Easily Delete Lines in Piping Tool

Please see picture:

How do I delete the lines I no longer need via the piping tool?

I don’t see a way to click on a line and delete it?

The manual says,

To delete a segment, click on a connection in the segment and press the Delete key, or by right-clicking and selecting “Delete”.

https://docs.inductiveautomation.com/display/DOC81/Perspective+Pipes