layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x56
  RenderBlock {HTML} at (0,0) size 800x56
    RenderBody {BODY} at (8,16) size 784x24
      RenderBlock {P} at (0,0) size 784x24
        RenderButton {BUTTON} at (2,2) size 449x20 [bgcolor=#FFFFFF02] [border: (1px solid #4C4C4C)]
          RenderBlock (anonymous) at (12,3) size 425x14
            RenderText {#text} at (0,0) size 425x14
              text run at (0,0) width 425: "Activating (e.g. holding the mouse button down on) this button should make it go green."