This example demonstrates the basics of loading and parsing CSV data with D3. It fetches a remote CSV file containing named CSS colors and displays a summary of that data, including its size in kilobytes, the number of rows, and the number of columns. The result is rendered as large text inside a `<pre>` element. The code uses `d3.csv` to asynchronously load the file from a GitHub gist, then `d3.csvFormat` to measure the data size and `data.columns` to count the columns.