This example shows a word cloud built with the d3-cloud layout, displaying repeated JavaScript-related terms scaled by their `size` values. The code was originally written for D3 v3, but the page loads D3 v3.5 despite the README noting the intended use of v5, resulting in a broken implementation. The layout assigns random 0 or 90 degree rotations, uses the Impact font, and draws the words as SVG `<text>` elements with color fills from `d3.scale.category20()`. The final viewBox calculation attempts to trim whitespace but never executes due to the version mismatch.