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    "offset": {"columnTitle": 10},
    "columns": {"signal": "length(data('column_domain'))"},
    "bounds": "full",
    "align": "all"
  },
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        },
        "style": "guide-label",
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      },
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      "name": "column_footer",
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        {
          "scale": "x",
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          "title": "Worldwide Gross",
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          "labelOverlap": true,
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      ]
    },
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              "fill": {"value": "transparent"},
              "stroke": {"value": "#4c78a8"},
              "ariaRoleDescription": {"value": "point"},
              "description": {
                "signal": "\"Worldwide Gross: \" + (format(datum[\"Worldwide Gross\"], \"\")) + \"; US DVD Sales: \" + (format(datum[\"US DVD Sales\"], \"\"))"
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