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layer at (0,0) size 800x600
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          RenderText {#text} at (0,0) size 368x18
            text run at (0,0) width 368: "This test passes if the caret is at the start of the second line."
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          text run at (1,1) width 11: "a "
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caret: position 2 of child 0 {#text} of child 2 {DIV} of child 0 {BODY} of child 0 {HTML} of document
