Tree3 is an animated, interactive SVG tree diagram that visualizes a hierarchical dataset of failure causes and priorities, rooted at the "SCM QN" node. Built with the D3.js library (version 3.5.17), it uses `d3.layout.tree` and `d3.svg.diagonal` to render nodes and links from a CSV file. Users can click nodes to collapse or expand branches, triggering smooth transitions via `transition.attr` and `transition.duration`. The visualization displays the tree horizontally, with node depth mapped to horizontal spacing and text labels positioned accordingly.