| http://www.w3.org/ns/prov#value | - the post office to practice the methods, or as part of the system, discussed herein; FIG. 3 is a flow chart of an illustrative process implemented by a post office for practicing the methods taught herein; FIG. 4 is an illustration of a typical postal label for use with the methods and systems taught herein; and FIG. 5 is an illustration of typical labeling that might be used on a book of labels
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