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 (8,16) content-size 784x19 children: not-inline
      BlockContainer <pre> at (9,17) content-size 782x17 children: inline
        InlineNode <span>
          frag 0 from TextNode start: 0, length: 1, rect: [9,17 8x17] baseline: 13.296875
              " "
          TextNode <#text>
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,16 784x19]
      PaintableWithLines (BlockContainer<PRE>) [8,16 784x19]
        InlinePaintable (InlineNode<SPAN>)
          TextPaintable (TextNode<#text>)
