The photonic network of the present invention uses a cost-effective DWDM optimized switch architecture allowing the introduction of DWDM into the metro network. The mold clamping apparatus is previously operated in the closure position detection mode so as to store, as a reference value, the mold closure position at which a target mold clamping force is obtained. The keys and the letters displayed on the keys are marked in such a way that the markings suggest the second key in the two-key sequence. The reasoner instances are directed to reason the partitions and the results from the reasoner instances are combined.