This example demonstrates how to load and summarize a CSV dataset using D3 version 7. It fetches a TikTok dataset from a GitHub Gist via `d3.csv`, then uses `d3.csvFormat` to measure the formatted data size in kilobytes and displays that value inside an HTML `<pre>` element. The page uses Element IDs and `textContent` for DOM manipulation. A linked video provides additional guidance, while a separate `index.js` file shows a minimal `select` call from D3.