This example shows how software versions change over time by plotting registration time on the x-axis and validity time on the y-axis. Each colored rectangle represents a version, with the SVG elements `rect`, `line`, and `text` used to draw the chart, axes, and labels directly in HTML. The chart uses stacked rectangles and horizontal lines to depict the duration each version is valid, with axes labeled from 09:00 to “now.” The pure SVG rendering relies on basic styling with CSS classes for version colors and precise coordinate attributes for positioning.