This interactive directed graph editor displays a network of nodes and links that respond to mouse events. Users can click nodes to select them, and drag to create or modify connections. The visualization uses D3 v5’s force simulation (`d3.forceSimulation` with `forceManyBody` and `forceCenter`) for layout, while SVG paths and circles render the graph elements. The code styles interactions through CSS classes, including draggable links and reflexive node states.