This Pine Script indicator visually marks significant historical price points on the chart by drawing vertical lines at intervals of 6 months, 3 months, and 1 month ago. Each vertical line is accompanied by a label indicating the time frame (6M, 3M, 1M). Additionally, it calculates and displays the percentage change between the closing prices at 6 months ago and 3 months ago, as well as between 3 months ago and 1 month ago, using horizontal lines to connect these price points. This tool is useful for analyzing trends and price movements over time, providing traders with a clear visual representation of historical performance.