This example shows a family tree layout with four generations of named individuals, displayed as purple-ringed circles connected by lime-green links. The tree is built from tabular parent-child data using `d3.stratify()` and `d3.tree()`, with nodes colored per generation via the `setGeneration` lookup. Rendered in SVG, the links animate with `transition().duration(1000)` along straight paths, while circles grow to radius 40 and labels appear as bold black text. The visualization uses D3 v6 and a pink page background.