How does "interactive tree" work (for displaying use cases included by a use case)?

⚠️ IMPORTANT: The "interactive tree" feature is deprecated.

When creating a SmartView for your use cases, you have the option of selecting "Display included use cases using interactive tree" in Step-6.

When you select this option, the SmartView will display all use cases included by a given use case using an "interactive tree". You can click on a node of the tree to expand/collapse the leaf-nodes.