| http://www.w3.org/ns/prov#value | - With particular reference to FIGS. 1, 4 and 5, the engaging means 40 of the illustrated embodiment comprise engaging elements such as at least one tooth disposed on the axial wall of one or both of the base and/or top portions for *engaging the axial wall of the other of the base and/or top portions so as to resist separation of the base and top portions after the axial wall of the top portion is
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