This example converts GeoJSON data containing town health center information into CSV files, one per feature collection in the dataset. The code iterates through each array in the `data` variable, extracts the properties from each feature, and uses `jsonToCSV` to create a comma-separated representation with headers. It then triggers a browser download via the `downloadCSV` function, setting the `href` and `download` attributes on the hidden anchor element. The process relies on JavaScript’s `Object.keys`, `JSON.stringify`, and array mapping, while D3 is only imported but not actively used in the visualization logic.