A circular arc diagram traces email communication among Enron employees, with nodes positioned along a horizontal axis and curved paths linking senders to recipients. Job titles determine node colors via a categorical scale, while node size reflects sender ID. The visualization filters the CSV dataset to 1,000 records, sorts by job title, and renders paths using SVG `path` elements with elliptical arcs. Built with D3 v4 and React, it supports zooming through `d3.zoom()` and relies on `d3.scalePoint` for positioning and `d3.scaleOrdinal` for color assignment from `d3.schemeSet3`.