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layer at (0,0) size 800x600
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    RenderBody {BODY} at (8,8) size 784x584
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        RenderBlock {DIV} at (0,0) size 784x18
          RenderText {#text} at (0,0) size 508x18
            text run at (0,0) width 508: "There should an empty H1 block below, followed by a normal empty paragraph."
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          RenderBlock {H1} at (0,0) size 784x37
            RenderBR {BR} at (0,0) size 0x37
          RenderBlock (anonymous) at (0,58) size 784x18
            RenderBR {BR} at (0,0) size 0x18
        RenderBlock {DIV} at (0,115) size 784x18
          RenderText {#text} at (0,0) size 310x18
            text run at (0,0) width 310: "There should be a single empty paragraph above."
caret: position 0 of child 0 {BR} of child 0 {H1} of child 3 {DIV} of child 0 {DIV} of child 0 {BODY} of child 0 {HTML} of document
