An Easter egg is an intentional inside joke, a hidden message, or a secret feature of an interactive work (often, a computer program, video game or DVD menu screen). The name is used to evoke the idea of a traditional Easter egg hunt
– Wiki

The above visualisation is a 3D tree view of a decision tree generated with the Partition platform.

However, if you look under the red triangle hotspot for the platform you won’t find an option to create this output.

It’s hidden away.  To find it, press the SHIFT key whilst clicking on the hotspot:

No doubt there are many other treasures waiting to be found!