layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x69
  LayoutBlockFlow {HTML} at (0,0) size 800x69
    LayoutBlockFlow {BODY} at (8,16) size 784x37
      LayoutBlockFlow {P} at (0,0) size 784x37
        LayoutInline {<pseudo:first-letter>} at (0,0) size 20x36 [bgcolor=#00FF00]
          LayoutTextFragment (anonymous) at (0,0) size 20x36
            text run at (0,0) width 20: "T"
        LayoutTextFragment {#text} at (19,15) size 491x17
          text run at (19,15) width 340: "his very long paragraph should have a big first letter "
          text run at (358,15) width 152: "with green background."