A novel \u03b2-amylase having excellent practical applicability is found, and an object is to provide a practical use of the \u03b2-amylase. The method is performed by a router which forwards packets between the external network and the subnet. Sensor related information can be emitted by the information module as optical radiation. The two deployable cantilevered wings are each pivotable between a stowed position and a deployed position. The verifier lens having a power to permit a far-sighted archer to focus on the front sight alignment pins while keeping the target in focus. The filter and the storage region may have congruent geometries.