A pair of spaced embossed transparent layers may be utilized in {HEAD ~ the various embodiments} for increasing {TAIL ~ the dynamically changing light images} as seen by approximately the square of the number of images that would be produced by one layer alone 
for increasing
A pair of spaced embossed transparent layers may be utilized in { HEAD ~ the various embodiments } for increasing { TAIL ~ the dynamically changing light images } as seen by approximately the square of the number of images that would be produced by one layer alone
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