layer at (0,0) size 800x600
  RenderCanvas 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 {DIV} at (0,0) size 784x84 [border: (2px solid #FF0000)]
        RenderBlock (anonymous) at (14,14) size 756x28
          RenderInline {SPAN} at (0,0) size 150x28
            RenderText {TEXT} at (0,0) size 150x28
              text run at (0,0) width 150: "xxxxxx xxxxxx"
          RenderInline {SPAN} at (0,0) size 0x28
          RenderText {TEXT} at (0,0) size 0x0
        RenderBlock {DIV} at (14,42) size 756x28
          RenderText {TEXT} at (0,0) size 156x28
            text run at (0,0) width 156: " xxxxxx xxxxxx"
selection is CARET:
start:      position 14 of child 1 {TEXT} of child 5 {DIV} of root {DIV}
upstream:   position 14 of child 1 {TEXT} of child 5 {DIV} of root {DIV}
downstream: position 14 of child 1 {TEXT} of child 5 {DIV} of root {DIV}
