| http://www.w3.org/ns/prov#value | - While the panels 714 are likely made of glass, other suitable materials such as plastics may be used. (For FIG. 7, picture the substrate 724 being in the same plane as the page, and panels 714 extending perpendicularly out of the page.) In this embodiment, rather than securing the light sources 104, 106 and 108 to prisms, as could be done in the previously discussed embodiments, the light sources
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