r to that shown in FIGS. 11 and 13; [0039]FIG. 16 is a schematic view of an alternate strand of material used in further embodiments of the present invention similar to other embodiments disclosed herein, preferably those shown in FIGS. 8 through 15, but showing narrowings at certain points in the strand, which enable the strand of material to bend or articulate with greater flexibility at those p