This example shows an employee hierarchy as a network graph, with nodes representing people and links representing parent-child relationships. The node positions are determined by a physics simulation using `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to arrange the structure. The data is loaded via `d3.csv` from a Gist, and circles in skyblue with text labels render each node within an SVG. Link lines use a light gray stroke, and the simulation updates node transforms and link coordinates on every tick.