This example shows a simple interactive network graph built with D3.js, where nodes (circles) and links (lines) are generated from sample data and arranged using the d3.forceSimulation API. Users can drag nodes to reposition them, with the simulation updating link positions on each tick. The graph is rendered as SVG in a full-screen container, and the code includes a minimal data structure for adding nodes and connections, as well as a color palette from colors.js for potential styling. The visualization is a basic template for experimenting with force-directed layouts.