At a Power-On time, a read potential is generated by a VBP generating circuit. In the key management, node information is generated by allocating a pair of keys to each node. The compounds are suitable for example as medicaments for the prevention and treatment of type 2 diabetes. The haloalcohols are useful in the preparation of 6-phenyl-triazolopyrimidine compounds which are useful in the treatment of cancer. In one aspect, a substrate and a lithographic mask are aligned based at least in part on a motive force between a substrate alignment mark on the substrate and a mask alignment mark on the lithographic mask that induces movement of at least one of the substrate and the lithographic mask into mutual alignment. The alignment may be performed manually or automatically.