This example demonstrates a simple arc diagram layout for network visualization, showing the "Les Misérables" character co-occurrence network. Nodes are positioned linearly along the bottom edge, while curved edges arc above or below to represent connections, with edge weight indicated by line thickness and node group membership encoded through color. The implementation uses the `d3.layout.arcDiagram` API to calculate node positions and arc paths, with D3.js (version 3.5.5) handling SVG rendering and interaction. The visualization reads from a `miserables.json` data file and includes randomized reverse links to showcase the layout's handling of directed edges.