This example displays a text-based summary of a population dataset for the ten most populous countries in 2018, sourced from the United Nations World Population Prospects. It shows the total row count, column count, and file size in kilobytes, followed by the first ten rows of the data formatted as JSON. The page uses d3.csv to load the external data.csv file, d3.csvFormat to compute the data size, and d3.select to append <pre> elements displaying the results on a black background with green terminal-style text.