This example visualizes a small friendship network where six nodes represent people and links represent their connections. The D3.js force simulation, using `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter`, positions nodes dynamically. The SVG rendering shows circles for nodes and lines for links, with labels placed above each circle. The static hardcoded data (three-letter names like Alice and Bob) is drawn in an 800×500 viewBox, with positions updated on each simulation tick.