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  RenderView at (0,0) size 800x600
layer at (0,0) size 800x54
  RenderBlock {HTML} at (0,0) size 800x54
    RenderBody {BODY} at (8,16) size 784x22
      RenderBlock {P} at (0,0) size 784x22
        RenderButton {BUTTON} at (2,2) size 490x18 [bgcolor=#C0C0C0] [border: none (2px outset #C0C0C0) none (2px outset #C0C0C0)]
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            RenderText {#text} at (0,0) size 474x13
              text run at (0,0) width 474: "Activating (e.g. holding the mouse button down on) this button should make it go green."