That which verifies rather than assumes. A checker turns a belief into a finding.

The making of a rule actually hold. Enforcement is where a stated principle either has teeth or is revealed not to.

The tending of what may be said or shown in a shared space. Moderation is a judgment exercised on behalf of others.

Permitting little deviation. Strictness buys reliability and costs tolerance for the unforeseen.

The checker given a name — the entity whose one duty is saying whether a thing holds to its law.