This example shows a directed knowledge graph of robot components, organized into five color-coded teams, with arrows representing different types of process flows between nodes. Built with D3.js v5 and rendered as SVG, the visualization uses a custom arrowhead marker for directed links and scales node colors via a sequential palette. The code constructs the graph with `d3.select`, `svg.append`, and the `scaleOrdinal` color scale, mapping categorical team assignments to visual properties.