This example demonstrates the file size of a CSV dataset after it is loaded and parsed. It fetches data from a GitHub Gist containing baby name statistics from 1880, then displays the formatted size in kilobytes within a large text element. The visualization uses D3 version 7.6.1, specifically the `d3.csv` method, to retrieve and parse the data, and `d3.csvFormat` to measure its serialized length. The result is a minimal, text-based output that quantifies the data payload.