Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x79 children: inline
      InlineNode <span>
        frag 0 from TextNode start: 0, length: 1, rect: [8,25 39.09375x56] baseline: 43.328125
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        TextNode <#text>
        InlineNode <span>
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          TextNode <#text>
          InlineNode <span>
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            TextNode <#text>
            InlineNode <span>
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              TextNode <#text>
              InlineNode <span>
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                TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x79]
      PaintableWithLines (InlineNode<SPAN>)
        TextPaintable (TextNode<#text>)
        PaintableWithLines (InlineNode<SPAN>)
          TextPaintable (TextNode<#text>)
          PaintableWithLines (InlineNode<SPAN>)
            TextPaintable (TextNode<#text>)
            PaintableWithLines (InlineNode<SPAN>)
              TextPaintable (TextNode<#text>)
              PaintableWithLines (InlineNode<SPAN>)
                TextPaintable (TextNode<#text>)
