A positive photosensitive composition comprising an acid generator that generates an acid upon irradiation of an actinic ray or radiation, a resin that has a monocyclic or polycyclic alicyclic hydrocarbon structure and is decomposed by the action of an acid to increase solubility in an alkali developing solution, and a specific basic compound. The method is characterised in that the reciprocal motion of the liquid phase is directed via slits in the ramp at an acute angle to the direction of the movement of the solid material pieces upwardly along the ramp. If that data is accessed again, it may be retrieved without accessing external memory, thus reducing latency. In the upper part of an interlayer insulator that covers those assist gates are formed word lines that are used as control electrodes. These additions lead to a greater chance of successful session set-up completion, reduce the number of signaling exchanges in general, and enable precondition attempts to be started earlier and to be executed in parallel. A predetermined second part region of the blank is rounded after a predetermined first part region has been rounded.