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| RenderView at (0,0) size 800x600 | |
| layer at (0,0) size 800x49 | |
| RenderBlock {HTML} at (0,0) size 800x49 [bgcolor=#00FF00] | |
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| RenderBlock {P} at (0,0) size 784x17 | |
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| text run at (0,0) width 314: "The background of the document should be green" |