/**
 * An enumeration which represents the horizontal direction. The `Forward` option moves forward. The `Backward` option moves backward.
 */
export declare enum Direction {
    /**
     * The `Forward` value with an underlying `1` number value.
     */
    Forward = 1,
    /**
     * The `Backward` value with an underlying `-1` (minus one) number value.
     */
    Backward = -1,
}