This example shows a force-directed network graph of eight people connected by weighted links, with node labels displayed in bold cursive text. The visualization uses D3 v4’s `d3.layout.force` (with configurable gravity, distance, and charge) to position nodes and links, and renders the result as SVG via `d3.json` loading of external data. Each node is drawn as a circle with a fixed radius, while link thickness is scaled by the `weight` property from the JSON data. Users can click and drag nodes, as the simulation updates positions on each tick event.