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 784x18
        RenderText {#text} at (0,0) size 337x18
          text run at (0,0) width 337: "Deleting into a nested block (was Radar 4056100)"
      RenderBlock {DIV} at (0,39) size 400x55
        RenderText {#text} at (0,0) size 375x54
          text run at (0,0) width 351: "The bug's symptom was that the visual result were two"
          text run at (0,18) width 375: "instances of the word \"three\", because the original was not"
          text run at (0,36) width 179: "erased. Resize cleared it up."
      RenderBlock {HR} at (0,101) size 784x3 [border: (1px inset #000000)]
      RenderBlock {DIV} at (0,111) size 784x101
        RenderBlock {DIV} at (0,0) size 784x18
          RenderText {#text} at (0,0) size 32x18
            text run at (0,0) width 32: "three"
caret: position 0 of child 0 {#text} of child 1 {DIV} of child 7 {DIV} of body