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layer at (0,0) size 800x58
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      RenderBlock {DIV} at (0,0) size 784x20
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          text run at (0,0) width 784: "When the caret reaches the edge of the input box or content editable div, on the next input if must jump to the center of the control."
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  RenderBlock {DIV} at (0,20) size 82x22 [border: (1px solid #000000)]
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      text run at (1,1) width 336: "012345678901012345678901234567890123456789"
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