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 784x584
      RenderBlock {H4} at (0,0) size 784x20
        RenderText {#text} at (0,0) size 331x19
          text run at (0,0) width 331: "Deleting into a nested block (was Radar 4056100)"
      RenderBlock {DIV} at (0,41) size 400x61
        RenderText {#text} at (0,0) size 385x59
          text run at (0,0) width 385: "The bug's symptom was that the visual result were two instances"
          text run at (0,20) width 382: "of the word \"three\", because the original was not erased. Resize"
          text run at (0,40) width 78: "cleared it up."
      RenderBlock {HR} at (0,109) size 784x3 [border: (1px inset #000000)]
      RenderBlock {DIV} at (0,119) size 784x101
        RenderBlock {DIV} at (0,0) size 784x20
          RenderText {#text} at (0,0) size 30x19
            text run at (0,0) width 30: "three"
caret: position 0 of child 0 {#text} of child 1 {DIV} of child 7 {DIV} of body