This example shows a time series of monthly stock price data with a focus and context view. The main chart displays the price trend as an area chart, while a smaller brushable overview allows users to select a date range. The selection is reflected in the main chart through a coordinated zoom and pan interaction. The visualization is built with D3 v5, using `d3.brushX` for the range selection and `d3.zoom` for pan and zoom transforms. The SVG rendering uses `d3.area` with a monotone curve, and the data is loaded from a CSV file containing date and price pairs.