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 (8,13) content-size 784x17 children: not-inline
      BlockContainer <pre> at (9,14) content-size 782x15 children: inline
        InlineNode <span>
          frag 0 from TextNode start: 0, length: 1, rect: [9,14 6.5x15] baseline: 11.390625
              " "
          TextNode <#text>
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,13 784x17]
      PaintableWithLines (BlockContainer<PRE>) [8,13 784x17]
        PaintableWithLines (InlineNode<SPAN>)
          TextPaintable (TextNode<#text>)
