A seal for preventing leakage of fluid from between a first member and a second member has a seal body and a seal wear indicator. In some illustrative embodiments the user interface may additionally provide electrically simulated parameter values for an input parameter, such as the channel resistance of a power transistor, thereby enabling a simulation of a portion of interest of the metallization system without actually requiring the provision of the design data of the power transistor. The power supply frequency fs is set within the range specified by the upper and lower limit values. A pointing stick cursor key includes a holding structure, an opening and a masking portion. The color image data may be further processed by the image processing pipeline to correct color and gamma properties prior to being converted into a luma and chroma color space. Rejecting the prevailing idea that casting can only be performed with two continuous casting roll materials of the same kind, so as to ensure uniform crystal growth, a continuous casting roll pairing of steel and copper is provided in the present invention.