Methods and apparatus, including computer program products, for real-time and context-aware tracking of items. One such method includes applying a first voltage level to a first edge word line of a memory block string and applying a second voltage level to a second edge word line of the memory block string. The tool head can be positioned in such a manner that it can selectively process a first work piece in the first mounting device or a second work piece in the second mounting device. A plurality of such tearstrips may be provided and may be spaced from each other to provide pouring andor venting in a variety of directions. As a result, it is possible to realize a semiconductor apparatus whose resistance against repetitive stresses and impulse is improved and which has high packaging reliability.