A network graph displays nine people as labeled circles in sky blue with blue borders, connected by black links whose thickness reflects link weight. The names and groups come from a local `graph.json` file. Built with D3.js v4 and a v2 fallback, it uses `d3.layout.force` for simulation and `force.drag` for interactive node movement, rendering elements as SVG lines and groups. The graph’s layout is computed dynamically, with nodes repositioning on each tick.