SVG Fundamentals
This example demonstrates basic SVG shape rendering within a single HTML page. It shows circles, a rectangle with a colored fill and stroke, a line, and a path element, all positioned on a 900 by 600 pixel canvas. The code uses the SVG API directly through inline XML elements, with attributes like `cx`, `cy`, `r`, `width`, `height`, and `d` to define geometry. CSS and JavaScript are not actively used here; rather, the structure relies purely on declarative SVG markup to produce its static visual output.