This example shows a small directed force-directed graph with six labeled nodes (A through F) and six weighted links, rendered as SVG lines and circles. The network is positioned using d3.forceSimulation, with a link force, charge force, and center force, and the link stroke width encodes the numeric value from the `helpme.json` data file. Nodes are olive circles with text labels and can be repositioned interactively via a d3.drag handler. The layout updates continuously on each simulation tick, translating node groups and updating link endpoints.