This demo shows raw SVG path commands and gradient fills without a data source, using only the SVG element and its built-in path syntax. Three stroked paths use relative and absolute coordinates (M, L, l) to draw diagonal lines with varying thickness and color. A nested `<svg>` contains a linearGradient definition applied to an ellipse, demonstrating how gradients can be referenced via `url(#grad1)`. The example serves purely as a technical reference for SVG shape construction and styling.