The firm's attributes: the fields its entries carry (any role)

In position then key order. required blocks release where the matter's list is non-empty and the entry carries no value; proposed says the narrative call answers this attribute in the one call it already makes. On a row the connector owns or has bound (source: connector, or a binding), label and proposed are the firm's and the rest is the connector's, as are the row's sets. position is the server's on every row.