| http://www.w3.org/ns/prov#value | - An apparatus as in claim 10, wherein each feature having a descending hub other than said at least one descending hub configured to fit in said elongated hole are received into wafer pin holes which are configured to receive each descending hub other than said at least one descending hub without any contact between a side of each descending hub other than said at least one descending hub and edges
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