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          text run at (0,0) width 211: "This tests Selection::addRange(). "
          text run at (211,0) width 547: "It should have no effect if the range passed to it does not intersect the currently selected"
          text run at (0,18) width 43: "range. "
          text run at (43,18) width 161: "'3456' should be selected."
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