SCIENTIFIC RULE
Relationship type is evidence, not decoration.
A network affiliate is not its network owner. An FCC legal licensee is not automatically the public-facing corporate brand. A channel-sharing partner is not automatically a co-owner. A minority shareholder is not automatically an editorial controller. A pending acquisition is not current ownership.
FCC identity is its own layer
For U.S. broadcast stations, Flipskillet preserves the FCC Facility ID as the durable station identifier and the named legal licensee/FRN as a separate regulatory layer. A point-in-time Form 323 snapshot is labeled with its as-of date and is not silently promoted to present-day ownership.
Operations are their own lens
Satellite-station relationships, channel sharing, TBAs, SSAs, JSAs, LMAs and similar operating arrangements belong in an operational relationship family. They can be materially important without being ownership.
Political and civic overlap
This atlas is designed to accept documented political relationships — lobbying disclosures, PAC activity, government ownership, public appointments, regulatory decisions, board service and other sourced institutional links — as a separate relationship family. Political proximity will never be silently converted into an editorial-control claim.
What “structural footprint” means
It is simply the count of modeled descendants under a control system in the current corpus. It is useful for navigation, not as a measure of audience, market power, persuasion or cultural influence.
Source hierarchy
SEC and regulator filings → official annual reports / investor relations → broadcast license records → authoritative public records → reputable reporting for context. Every consequential edge should be date-stamped and source-linked.