| http://www.w3.org/ns/prov#value | - FIG. 6 illustrates an attachment 35C where the end portion 70C of the attachment is solid, but where a portion of the stem 71C includes a hollow portion 72C. The hollow portion 72C can extend as deep as desired, and can be any size or diameter desired, depending on the functional requirements of the attachment 35C. Notably, the stem 71C can be square, rectangular, or other cross-sectional shape, a
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