| http://www.w3.org/ns/prov#value | - In some embodiments, depending on what kind of pattern is desired in precursor web 21, roll 102 (and, likewise, roll 102A) can comprise ridges 106 wherein portions have been removed, such as by etching, milling or other machining processes, such that some or all of ridges 106 are not circumferentially continuous, but have breaks or gaps.
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