This visualization shows a Facebook friend network as a force-directed graph rendered on an HTML `<canvas>` element. The code loads edge data from a CSV file, builds nodes and links, and applies `d3.forceSimulation` with `forceX`, `forceY`, `forceCollide`, `forceManyBody`, and `forceLink` to position the network. Each tick redraws nodes as small circles and links as lines using Canvas 2D context methods, with a simple 700×500 layout and muted stroke styling.