This example demonstrates a real-time line chart that continuously updates with new data points. The visualization shows a scrolling line graph where new random values are appended and old ones shift out of view every half second. The chart uses D3 v5 to generate data with `d3.randomNormal`, and displays an animated SVG path created with `d3.line`. The updating mechanism relies on D3 transitions with `easeLinear`, using `transition.attrTween` (via the `tick` function) to slide the line horizontally while clipped by a clipPath.