{
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      "name": "Scrolling Contents Layer",
      "bounds": [800, 600],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
    {
      "name": "LayoutNGBlockFlow DIV class='composited box'",
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      "drawsContent": false
    },
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      "name": "LayoutNGBlockFlow PRE id='layer-tree'",
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    }
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}