This interactive family tree visualization displays a hierarchical dataset of named individuals connected by directional links. It uses D3.js v3 with SVG rendering to draw collapsible nodes, where each person is represented by a colored rectangle based on type, and animations smoothly transition nodes when clicked. The layout is computed with `d3.layout.tree`, while zoom and drag behavior is enabled via `d3.behavior.zoom`. Tooltips and arrow markers are included, and CSS defines styling for links, nodes, and selection states.