This example shows an interactive network graph rendered as SVG, displaying nodes and links that respond to drag and force-based movement. It uses d3.forceSimulation with forceLink, forceManyBody, and forceCenter to compute layout, while d3.drag enables node repositioning. Nodes appear as colored circles with labels, and edges are drawn as straight lines. The visualization updates iteratively through the simulation’s tick event, redrawing positions dynamically on an 800x500 canvas.