Mesothelin ins a differentiation antigen present on the surface of ovarian cancers, mesotheliomas and several other types of human cancers. In a preferred embodiment, conventional thin small outline packaged memory circuits are vertically stacked one above the other. And then, the candidate regions representing an abstract and an introduction is selected, thereafter word regions are extracted from the candidate regions, and an abstract content portion is determined. The method includes the steps of providing a registration nip in a sheet path; providing a ball-on-belt sheet transport for directing a sheet towards the registration nip; feeding the sheet into the registration nip with the ball-on-belt transport; and then pivoting the sheet within the ball-on-belt transport in order to register the sheet against the registration nip. The speaker system is connected to or in communication with a conventional source of audio signals, such as radio, tape player, CD player, cellular telephone or the like. This can be helpful where a user has parked his or her car and thereafter needs assistance locating where it is parked.