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layer at (0,0) size 800x600
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          text run at (0,0) width 137: "You should see a 350"
          text run at (137,0) width 385: "x350 pixel (7 by 7) black/white checkerboard pattern below. "
          text run at (522,0) width 248: "This test is checking to see if box-pack:"
          text run at (0,18) width 123: "justify is supported."
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