A force-directed knowledge graph maps thirteen labeled nodes across five color-coded groups, with directed arrows showing relationships between concepts like Aggregation, Eligibility, and Reporting. Links are drawn as lines with arrowhead markers and text paths for edge labels. The layout uses `d3.forceSimulation` with `forceX` and `forceY` to position nodes by group, while `d3.forceLink` and `d3.forceManyBody` manage link distances and repulsion. Click-drag interaction enables node repositioning.