Knowledge graph
Each node is a concept in the knowledge bundle, and each edge is a typed relation from a concept's frontmatter, such as about,derivedFrom or relatedTo, under the RDF predicate it projects to. A link written in a concept's body is not an edge. Search dims the nodes that do not match, the boxes hide node types and predicates, and selecting a node shows its details and a link to its page. The page's address names the selected concept, so a link to it opens the graph there.
The trust shown in a node's details is the toolkit's tier. A concept's page gives its label in the words the curator and the docent use. The same graph is graph.nt as N-Triples and concepts.jsonld as JSON-LD.