The section on [`tree:Relation`](https://treecg.github.io/specification/#Relation) refers to _the ontology_. Maybe for convenience a link to the ontology at **https://w3id.org/tree/** should be added here or explicitly under [`8. Vocabulary`](https://treecg.github.io/specification/#vocabulary)?
The section on
tree:Relationrefers to the ontology.Maybe for convenience a link to the ontology at https://w3id.org/tree/ should be added here or explicitly under
8. Vocabulary?