Attendant keys

(Mus.) the keys or scales most nearly related to, or having most in common with, the principal key; those, namely, of its fifth above, or dominant, its fifth below (fourth above), or subdominant, and its relative minor or major.

See also: Attendant

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The vehicle's top speed could also be preset, and special mechanics or parking attendant keys, which limit access to the trunk or glove compartment are also feasible.
When the attendant keys in a tool number request, the computer verifies that the number is correct.