layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x600
  LayoutSVGRoot {svg} at (0,0) size 800x600
    LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
      LayoutSVGResourceClipper {clipPath} [id="clip"] [clipPathUnits=objectBoundingBox]
        LayoutSVGEllipse {circle} at (0,0) size 1x1 [fill={[type=SOLID] [color=#000000]}] [cx=0.50] [cy=0.50] [r=0.50]
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      [clipPath="clip"] LayoutSVGResourceClipper {clipPath} at (40,40) size 300x300