A documented interpretation and education programme carries a clear theme drawn from what makes the visited places valuable in nature and culture, with set storylines, delivery methods and responsibilities, current and accurate content, and guides with recorded training, a certification or experience that can be verified. It is accessible to varied audiences (other-language speakers, children, school groups, people with disabilities), delivered before and during the visit, and reviewed yearly with updates and feedback recorded.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.