A channel plus ONE tail segment — a processor id, a pass-filter kind, a band ref: the shape a
row earns a local AddressCodec for right up until a SECOND row needs the same "one channel,
one tail" pattern (the row-grammar's own worked example for when a shape moves to core). What
differs per row is how the tail PARSES off the wire and how it is SPELLED BACK — a processor
id echoes verbatim, a band ref resolves through the curve to its stable id — so both are given
by the caller rather than guessed here.
A channel plus ONE tail segment — a processor id, a pass-filter kind, a band ref: the shape a row earns a local
AddressCodecfor right up until a SECOND row needs the same "one channel, one tail" pattern (the row-grammar's own worked example for when a shape moves to core). What differs per row is how the tail PARSES off the wire and how it is SPELLED BACK — a processor id echoes verbatim, a band ref resolves through the curve to its stable id — so both are given by the caller rather than guessed here.