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layer at (0,0) size 800x422
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          text run at (0,0) width 775: "In the test case below, the green block's width should not vary and should use the second region to determine its width. It is"
          text run at (0,19) width 731: "overflowing upwards out of the blue block, and so the portion that overflows should continue to use the blue block's"
          text run at (0,38) width 779: "containing block width. The blue block does not exist in region one, so using some hypothetical made-up width is incorrect."
          text run at (0,57) width 565: "The overflow should be spilling out of the top of region two and be painted in region one."
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        RenderRegion {DIV} at (0,0) size 302x102 [border: (1px solid #000000)]
        RenderRegion {DIV} at (0,102) size 402x202 [border: (1px solid #000000)]
        RenderRegion {DIV} at (0,304) size 2x2 [border: (1px solid #000000)]
Flow Threads
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      RenderFlowThread at (0,0) size 400x300
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                  text run at (0,0) width 291: "These lines should all fit to the width of the"
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                  text run at (0,38) width 112: "top of the second "
                  text run at (112,38) width 44: "region."
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                  text run at (0,0) width 291: "These lines should all fit to the width of the"
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                  text run at (112,38) width 44: "region."
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    RenderRegion {DIV} #region2
    RenderRegion {DIV} #region3