This example demonstrates how to find the minimum value across multiple nested arrays of objects using D3’s `min` function. The data consists of three lists of objects, each with an empty `a` property and numeric `b` values. A custom `getMinFromAll` function iterates through each list, computes the minimum `b` value per list, and then returns the smallest among those results. The final minimum value is displayed in a large `<pre>` element on the page, formatted with a 7em font size, using the D3 v5 library loaded from unpkg.