Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x34 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x18 children: inline
      InlineNode <object>
        frag 0 from TextNode start: 1, length: 23, rect: [8,8 181.5x18] baseline: 13.796875
            "This should be visible!"
        TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x34]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x18]
      PaintableWithLines (InlineNode<OBJECT>)
        TextPaintable (TextNode<#text>)
