The current API Reference could be reorganized to distribute its content among specific sections, each dedicated to one of its major topics, as follows:

• Directives
• Store
• Server API
• Client API
• Router (this one is still not part of this page but it would fit great in this new suggested structure)

The suggested final structure would be something like this:

• Directives
  • What are directives?
  • List of directives
  • Values of directives are references to store properties
• Store
  • Elements of the store
    • State
    • Actions
      • Async actions
    • Side Effects
    • Derived state 
      • How to define it but what is this is explained in more detail on Fundamentals of the Interactivity API (Core Concepts) > State, context, and derived state
  • Accessing data in callbacks
  • Setting the store
    • On the client side
    • On the server side
  • Private stores
• Server APIs
  • wp_interactivity_state
  • wp_interactivity_config
  • wp_interactivity_process_directives
  • wp_interactivity_data_wp_context
• Client APIs
  • getContext()
  • getElement()
  • withScope()
• Router
  • Description of a specific Store already created for router purposes