This pie chart visualizes the distribution of job titles in a dataset loaded from a CSV file, with each slice labeled by job title and count. The code uses d3.csv to fetch the data, d3.rollup to count occurrences per job title, and the d3.pie and d3.arc layouts to generate and render the arcs in SVG. A categorical color scale from d3.schemeCategory10 assigns colors to slices, and an HTML legend is dynamically appended to the page. The chart is centered within an SVG container sized at 450 by 450 pixels.