This example shows a sankey diagram tracking notification flows, using D3.js 3.5.17 with custom `d3.sankey` layout functions and SVG rendering. The diagram visualizes how 65,205 total notifications split into matched and scrap categories, with matched items further distributed across XRM, Prodc, PN OTD, and CRB targets. The code defines the sankey layout, node width, padding, and link curvature, while styling node rectangles and semi-transparent links. Clicking or hovering is not implemented; the visualization primarily demonstrates the classic D3 sankey layout with data loaded from a JSON file.