A blocked mercaptosilane of the structure:. The polishing platen has a plurality of slurry outlets disposed thereon and the polishing pad is disposed on the polishing platen. Font references associated with a document are compared with those available on a computer resource, to see if two fonts are the same in all significant respects. The detecting unit is connected with the battery module and the power supply unit for detecting the battery module. The technique includes, in response to the first communication, automatically attempting to communicate with at least one member of the group other than the first member to deliver the recorded voice message.