This example shows the protein content of various cereals as a pie chart, with each slice labeled in the legend alongside its gram value. The chart reads CSV data from a GitHub gist using `d3.csv` (via `getData.js`), then renders SVG paths with `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` for color mapping. Legends are appended as grouped rectangles and text, with values formatted using `d3.format`. The visualization is built with D3 v5, rendered entirely in SVG, and includes a red heading for emphasis.