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GeoPacks are structured to have one or more levels of geographical data. When there are multiple levels, the data will be structured in a logical hierarchy. Each level of the hierarchy will contain Geographical Labels of different formats and a Geographical Field containing a Point (and sometimes a Polygon). The pack may also have Demographic Metrics, which will be associated with the lowest level of the hierarchy which are automatically aggregated up depending on which hierarchy level you are using at the time.
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