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layer at (0,0) size 800x198
  RenderBlock {HTML} at (0,0) size 800x199
    RenderBody {BODY} at (8,16) size 784x170
      RenderBlock {P} at (0,0) size 784x18
        RenderText {#text} at (0,0) size 399x18
          text run at (0,0) width 399: "This tests horizontal caret movement in vertical writing mode."
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        RenderBlock {P} at (20,0) size 48x136
          RenderText {#text} at (1,38) size 23x98
            text run at (1,38) width 97 RTL: "\x{5D0}\x{5E0}\x{5D9} \x{5D7}\x{5EA}\x{5D5}\x{5DC}."
          RenderBR {BR} at (1,38) size 23x1
          RenderText {#text} at (25,28) size 23x108
            text run at (25,28) width 107 RTL: "\x{5D0}\x{5D9}\x{5DF} \x{5DC}\x{5D9} \x{5E9}\x{5DD}."
      RenderBlock {PRE} at (0,182) size 784x0
selection start: position 5 of child 0 {#text} of child 1 {P} of child 3 {DIV} of body
selection end:   position 6 of child 2 {#text} of child 1 {P} of child 3 {DIV} of body