layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x576
      RenderBlock {P} at (0,0) size 784x18
        RenderText {#text} at (0,0) size 55x17
          text run at (0,0) width 55: "Test for "
        RenderInline {I} at (0,0) size 540x17
          RenderInline {A} at (0,0) size 157x17 [color=#0000EE]
            RenderText {#text} at (54,0) size 157x17
              text run at (54,0) width 157: "rdar://problem/6771547"
          RenderText {#text} at (210,0) size 384x17
            text run at (210,0) width 384: " Appending to a RenderText causes all its lines to be dirtied"
        RenderText {#text} at (593,0) size 5x17
          text run at (593,0) width 5: "."
      RenderBlock {P} at (0,34) size 784x126
        RenderText {#text} at (0,0) size 775x125
          text run at (0,0) width 765: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse placerat. Morbi tristique. Mauris eu lacus sed felis"
          text run at (0,18) width 767: "pellentesque cursus. Proin vitae nulla. Vivamus in ipsum. Etiam mi. Nam malesuada purus in sem. Sed eget elit vel erat"
          text run at (0,36) width 774: "laoreet feugiat. Phasellus mollis pulvinar mi. Etiam ut neque sed eros egestas laoreet. Vestibulum ullamcorper, nulla non"
          text run at (0,54) width 728: "feugiat molestie, mi lorem bibendum leo, ac gravida orci nunc nec nulla. Nunc nunc lorem, rhoncus et, rutrum ac,"
          text run at (0,72) width 759: "fermentum ut, tortor. Sed rhoncus. Quisque enim metus, luctus tincidunt, vestibulum eu, vestibulum eu, libero. Mauris"
          text run at (0,90) width 775: "sagittis aliquam nunc. Nullam pharetra molestie eros. Donec tempus purus ut ligula. Phasellus non nisl. Etiam eu mauris."
          text run at (0,108) width 109: "Curabitur a velit."