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
      RenderTextControl {INPUT} at (2,2) size 148x19 [bgcolor=#FFFFFF] [border: (2px inset #000000)]
      RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0
layer at (13,13) size 142x13
  RenderBlock {DIV} at (3,3) size 142x13
    RenderText {#text} at (1,0) size 60x13
      text run at (1,0) width 60: "hello world"
caret: position 11 of child 0 {#text} of child 0 {DIV} of child 1 {INPUT} of child 1 {BODY} of child 0 {HTML} of document
