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layer at (0,0) size 800x600
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    RenderBody {BODY} at (8,8) size 784x584
      RenderBlock {DIV} at (0,0) size 784x84 [border: (2px solid #0000FF)]
        RenderText {TEXT} at (14,14) size 756x56
          text run at (14,14) width 756: "Should see \"foo bar baz\" in the red box. Insertion point should be between the"
          text run at (14,42) width 202: "\"b\" and \"a\" of \"baz\"."
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        RenderBlock {DIV} at (0,0) size 784x56 [border: (2px solid #FF0000)]
          RenderText {TEXT} at (14,14) size 22x28
            text run at (14,14) width 22: "az"
selection is CARET:
start:      position 1 of child 1 {TEXT} of child 1 {DIV} of root {DIV}
upstream:   position 1 of child 1 {TEXT} of child 1 {DIV} of root {DIV}
downstream: position 1 of child 1 {TEXT} of child 1 {DIV} of root {DIV}
