This example visualizes a network of hyperlinks and page relationships extracted from a GitHub gist, mapping connections between referenced URLs and the gist itself. The code uses d3.forceSimulation to position nodes and d3.select plus SVG paths to draw curved links, with link opacity and node radius encoding connection strength and degree. The data is hardcoded as an array of source-target pairs, including links to resources like Cygwin and apt-cyg documentation. A drag handler enables interactive repositioning of nodes, while the simulation’s tick function updates the graph in real time.