A slider resists erosion due to moisture, dirt and ultraviolet of sunlight and protects a pattern or the bonded surface from wear and tear. A display range of the panoramic video to be displayed on the display device is determined based on an input made on a predetermined input device. The impurity density of either one of the n drift regions and the p partition regions is within the range between 92% and 108% of the impurity density of the other regions. A motor can be designed to have a larger KT. A generation tool inserts event tags that correspond to the text string and creates an index file mapping the text strings to the appropriate event tags.