A barrier system includes a plurality of barriers, each barrier having a first end and a second end, and one or more posts. The shift lever may be connected to a housing for pivotable motion relative to the housing. When the user desires to purchase a content after its trial listening, the mobile communication terminal device downloads limitless right data from the server and converts the stored content data before export and the limitless right data into a format matched with the memory card for exporting them in the memory card. As a result of the configuration of the N type regions forming the buried wordline, the leakage current of the buried wordline to the substrate under reverse bias conditions may be significantly reduced. The thickness of the first arc-shaped portion is greater than the thickness of the second arc-shaped portion. Additional files are also hosted on the Internet server and describe aspects of the software extension.