A semiconductor integrated circuit device may include a semiconductor substrate, a static memory cell on the semiconductor substrate, a tensile stress film on the pull-down transistors, and a compressive stress film on the pass transistors. The mixer pipe forms an inlet end that is coupled to the second exhaust manifold and an outlet end that is located upstream of the cylinders in the first cylinder group and the cylinders in the second cylinder group. The user agent may be configured to retrieve information uniquely identifying the first document as well as an origin of the first document.