The present invention relates to a microporous polyolefin film suitable as a separator for batteries and thermal properties thereof. The commissioning device manages access to a fabric on which the assisting device resides, and the assisting device is configured to assist a joining device in joining the network. Accordingly, the supply of the main power to the PC board and the starting processing of a gaming processing program are performed automatically, without any need for the conventional manual operation of a power supply switch, so that no effort is required for the starting of a slot machine. Generally, slot assignment according to the present invention is a two-step process. A method for production of an electric motor such as this is also described. After the grooves have been exposed, the dry etch is continued to remove damage from the chip sidewalls and to round the chips’ bottom edges and corners.