| http://www.w3.org/ns/prov#value | - It is recognized that variations and modifications such as the use of Light Emitting Diodes, semiconductor lasers, or small light bulbs, to provide illumination in place of the optical fibers disclosed in conjunction with the preferred embodiment of FIG. 2, will be apparent to those skilled in the art and it is intended that all such variations and modifications be included within the scope of the
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