This example shows a small line chart of four data points, with each point represented by a black dot and connected by vertical lines that extend upward to a second set of dots, suggesting a range or comparison between two values. The visualization uses D3.js v4 to parse dates, scale time and linear axes, and render SVG elements including circles, lines, and rectangles. The chart plots closing values and their 1.1× multiples, with rectangles bridging the two series. The axes are formatted with rotated date labels, and the data is hardcoded as an inline array, not loaded from an external file.