Concepts
Node. A unit of knowledge: an article, a snippet, or a policy clause. Every node has an owner and a review date.
Graph. Relationships between nodes (replaces, cites, localized-from). The help center is a view of the graph, not a second copy.
Allowed answer. A node flagged as quotable by an assistant, with a required citation.
Workspace. One company. Brands are partitions inside a workspace, not separate graphs unless you want them to be.