SVM
This example displays a fixed rectangular region drawn in red with a blue outline, accompanied by a single diagonal black line segment. The visualization is implemented as a minimal HTML page using an SVG canvas with a width of 960 and height of 500. The code employs raw SVG elements—specifically `rect` and `line`—within an inline `<svg>` tag, styled through inline attributes rather than CSS classes. No external libraries or JavaScript are used, making it a static, declarative demonstration of basic vector graphics primitives.