A fork of the TERGAR training material displays a horizontal hierarchical tree layout of organizational or taxonomic data from a CSV file. The visualization uses d3.stratify to build the hierarchy and d3.tree for layout, rendering nodes as text labels and connecting links as curved paths via d3.linkHorizontal. The SVG output features a zoom behavior and Playfair Display typography, with font size decreasing by depth. The data is loaded asynchronously from a GitHub gist, with the entire tree rendered at once.