This example renders a hierarchical family tree as an interactive SVG visualization using D3 v3 and jQuery. The tree layout positions nodes by depth, with each generation colored by type (blue, green, yellow, purple) and connected by black links with orange arrow markers. Users can click nodes to expand or collapse branches, while drag-to-pan and zoom behavior is enabled via `d3.behavior.zoom`. Data is loaded from a JSON file containing nested student records, with tooltips and drop shadows enhancing node presentation.