Domains
How the ontology is applied to one kind of facility: which classes to use, how they nest, and which points to expect.
Datacenter
How a data center is modelled — halls and aisles, racks and IT equipment, the power chain and the cooling plant, and the points that report on them.
Warehouse
Modelling a logistics warehouse — site and floors, docks and functional zones, material-handling equipment and robots, people and their identities, and how live positions attach.