A community control on who may release shared information onward: recipients need not be members where the information has been marked as open to wider circulation (4.7), and the part of a member outside the community scope sees information only when it is marked for wider release (4.6); the authority to re-mark or release onward rests with the originator or the community's rules, not the recipient.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.