This example shows a line chart, rendered as an area chart, that tracks revenue by product line across the months of October through February. The chart’s line is smoothed and filled with a translucent teal color, with values ranging from 23 to 89. It uses the Chart.js library, with the chart type set to `line` and the `fill` option enabled to create the area effect. The code initializes a canvas context via `getElementById` and configures axes to begin at zero.