This example visualizes a social network as an interactive force-directed graph, showing friendships between named people. The SVG rendering uses D3 v6’s `d3.forceSimulation` with `forceLink`, `forceManyBody`, `forceCollide`, and `forceCenter` to position nodes, while draggable circles and text labels represent individuals. Links are drawn as red lines with arrow markers, and hovering highlights a node’s border. The data, loaded from `data.json`, specifies nodes and links with relationship types and values, with all links sharing a uniform blue fill and green stroke styling.