export type LabelEncoding = "matched" | "shared" | "split";
export interface EyeVisibility {
    left: number;
    right: number;
}
export interface LabelPresentation {
    tens: EyeVisibility;
    ones: EyeVisibility;
}
export declare const MATCHED_ECHO_OPACITY = 0.42;
export declare function labelPresentation(encoding: LabelEncoding, peek: boolean): LabelPresentation;
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