This example shows an interactive dendrogram layout of a hierarchical data structure, rendered as SVG circles connected by curved paths. Users can click nodes to inspect them, press Shift-click to add random "florps" children, or Cmd-click to delete entire subtrees, triggering re-renders that change link and node colors. The code relies on d3.hierarchy, d3.cluster, d3.zoom, and the d3 v5 event handling, with data defined as a plain JavaScript object and layout computed at 500x900 pixels.