This example shows a network graph with labeled circular nodes connected by curved, arrow-capable edges, rendered as SVG with a light green background. Node positions are determined by a physical simulation using `d3.forceSimulation`, including charge, collision, link, and center forces. The `graph` module draws each edge as a quadratic Bézier path that avoids overlapping node boundaries, while a zoom behavior updates a transform state applied to a group containing all nodes and links.