This example shows a stacked area chart of house and unit sales over time, with the MA (moving average) values across seven property types. The chart uses a silhouette offset, centering the data around zero. A list on the side enables the user to reorder the stacking sequence, and the chart redraws accordingly. It is built with D3.js, using `d3.stack`, `d3.area`, `d3.scaleTime`, and `d3.scaleOrdinal`. The data comes from a CSV file loaded via `d3.csv`, and hover interactions highlight individual areas with a tooltip.