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      LineBox: (8,18)->(235,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,19)->(235 x 16)
          InlineText: (There should be a green stack below:)
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        LineBox: (23,54)->(92,15)
          InlineLayoutBox: (anonymous) (SE) (baseline=15) (23,54)->(92 x 18)
            InlineText: (x )
            InlineLayoutBox: <span> (SE) (baseline=15) (37,54)->(69 x 18)
              InlineText: (x)
            InlineText: (x)
