layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
layer at (100,100) size 104x404
  RenderRegion {DIV} at (100,100) size 104x404 [border: (2px solid #000000)]
Flow Threads
  Thread with flow-name 'thread'
    layer at (0,0) size 100x400
      RenderFlowThread at (0,0) size 100x400
        RenderBlock {DIV} at (0,0) size 100x100 [bgcolor=#FF0000]
          RenderBlock {DIV} at (0,0) size 100x25
            RenderBlock {DIV} at (0,0) size 100x100 [bgcolor=#008000]
        RenderBlock {DIV} at (0,0) size 100x50 [bgcolor=#FF0000]
  Regions for flow 'thread'
    RenderRegion {DIV}