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layer at (0,0) size 800x38
  RenderBlock {HTML} at (0,0) size 800x38
    RenderBody {BODY} at (8,8) size 784x22
      RenderBlock {DIV} at (0,0) size 784x22 [color=#000080]
        RenderBlock {DIV} at (0,0) size 784x22 [border: (3px solid #000080) none (3px solid #000080)]
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            text run at (3,3) width 292: "This box should be open ended at the bottom."
