| http://www.w3.org/ns/prov#value | - and one or more light blocking layers or regions; FIG. 20 is a cross-sectional side view of the cartridge of FIG. 19; FIG. 21 is a schematic diagram of an illustrative object that has a light scattering element provided thereon or therein; FIG. 22 is a cross-sectional side view of the light scattering element of FIG. 21; FIG. 23 is a schematic diagram showing an illustrative embodiment of the pre
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