| http://www.w3.org/ns/prov#value | - The entire slide holder clip 69 is able to rotate about the support bar passing through holes 202 h so as to assume one of many mechanically stable positions including a horizontal position as shown in FIG. 33 (corresponding to slides 7 in FIG. 24 and FIGS. 27-28) and a vertical position (e.g., see slides 7 v FIG. 24 and FIGS. 27-28).
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