This example fills the browser window with 100 horizontal lines, each a thin SVG rectangle stacked at 20-pixel intervals. It demonstrates minimal procedural rendering using the Document Object Model API to create SVG elements (`document.createElementNS`) and set attributes like `width`, `height`, and `y`. The lines span the full viewport width, derived from `window.innerWidth/Height`, with no interaction or animation, showing a static grid-like pattern.