An address
Where a body sits in the whole, right now — kept carefully apart from who it is.
Identity is sovereign and permanent: a person or a Cell carries its own, and no registry issues or revokes it. An address is only location — the path from the root down to this Player, true for now and free to change. Keeping the two apart is what lets a body move, re-home, or federate elsewhere without losing its history: every commitment it made, every Quest it finished and every flame it passed stays with the who, never the where.
It is load-bearing because the whole is addressed rather than governed. Every Player and every line has one, so a card from a valley nobody has heard of can be read and answered; an activity, a milestone, a Quest and a commitment each carry the Player's address plus a short local id, and inside a Cell's own pages the local id alone is enough. That is the fourth of the Minimum standards of interoperability, and the reason a message can find its way without a directory that could fail or be captured.
Addresses are grown, not assigned. A Cell numbers the Cells it helps birth in the order they form, so the path is the family tree and carries the story of the flame in its shape. A Cell born without a parent names itself until it homes. When a body joins a different home, its address changes and it writes one line saying so.
Also called: Standard 4 Stands on: The Player · Cell · Home Cell Opens onto: Minimum standards of interoperability · The same card shape · The Record · The plan of the whole In play: Home · beyond Sources: The LIØNSBERG Operating System (book, draft v0) §18.4 · Address (wiki term page, drafts, unreviewed; the fullest treatment, including the lineage scheme) — lionsberg.wiki page name: Address Open: The lineage-path scheme is a draft proposal and has not been walked through.