This pie chart visualizes programming language usage by developers, with each language’s percentage labeled directly on its sector. The chart uses `d3.pie` and `d3.arc` to generate the SVG paths, while `d3.scaleOrdinal` assigns categorical colors. A legend on the right lists each language with its corresponding color and percentage value. Data is loaded as CSV from a GitHub gist, and percentages are formatted using `d3.format`. The SVG is fixed at 960×500 pixels, with the pie centered at (250, 250).