| http://www.w3.org/ns/prov#value | - Due to the physical characteristics of a nominal fiduciary mark shown in FIG. 3 and the physical circumstances under which fiduciary mark system 10 is used as shown in FIG. 1, including the length of the optical path between CCD camera 60 and conveyor 20 and the height of most parcels processed by fiduciary mark system 10, the system has sufficient depth of field such that the size of a nominal fi
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