fresh block
This example renders a blank, full-screen SVG canvas with a single line of monospace text reading “Edit the code below to change me!” positioned near the top. Built with D3 v4, the code uses `d3.select` to append an SVG element sized to 960 by 500 pixels, then appends a text node with fixed x and y coordinates, font size, and family. The visualization itself displays no data, serving purely as a placeholder prompt for users to modify the script.