pub const FAMILY_PARAMS: &[FamilyParam];Expand description
Every parameter only one family reads (ADR-0180 rule 4), with the range that
reads there — so the generated reference prints mode_n as Chladni’s and
inert elsewhere, rather than leaving an author to find it dead. Ranges are in
FieldFamily::ALL’s order, and each row’s spec range is one of them; both
held by this module’s tests. A parameter missing from here reads the same on
every family.