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          text run at (14,14) width 726: "Should see \"Test OK\" in top red box, followed by \"...more text\", in its own"
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              text run at (0,0) width 15: "T"
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              text run at (15,0) width 67: "est OK"
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              text run at (14,14) width 111: "...more text"
selection is CARET:
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downstream: position 0 of child 2 {TEXT} of child 1 {DIV} of root {DIV}
