This example visualizes a many-to-many network connecting authors to papers they wrote, using a force-directed graph in SVG with D3 v7. The data is non-hierarchical, so a network layout is used instead of a tree. Nodes are colored by type (green for authors, teal for papers), and d3.forceSimulation with link, charge, center, and collide forces positions the elements, with drag interaction and a tooltip showing node details.