| http://www.w3.org/ns/prov#value | - FIG. 3A is a simplified partial cut-away and cross-sectional side view of combined light pointer and marking pen apparatus 40 according to a preferred embodiment of the present invention when arranged so as to permit actuation of the light source, and FIG. 4 is a similar view of the same apparatus 40 when arranged so as to permit use of the writing pen and preclude actuation of the light source.
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