What the Code Does
1. **Draws Lines and Labels**:
- It draws lines on your chart to show the high, low, open, and close prices from the previous period (like the previous day or week).
- It also labels these lines with numbers that tell you how far the current price is from these levels.
2. **Shows Price Movement**:
- You can see how far the price has moved from these levels in terms of small price changes (ticks) or larger units (points).
- This helps you understand price movements and potential levels of support or resistance.
3. **Customizable**:
- You can choose whether to show these lines and labels, and you can select if you want to see the movement in ticks or points.
- The lines can extend into the future on your chart to help you anticipate where prices might be in the coming days.
### How It’s Useful:
1. **Identify Key Levels**:
- It helps you spot important price levels from past periods, which can act as support or resistance.
2. **Understand Price Movement**:
- You get a visual sense of how much the price has moved from key levels, which can help you gauge market volatility.
3. **Plan Trades**:
- By seeing where the price has been and how it has moved, you can better plan your trades, like deciding where to enter or exit based on these levels.
4. **Flexible for Different Markets**:
- It works across various markets, like stocks, futures, and forex, adjusting to the specific characteristics of each instrument.
In short, this tool helps you visualize and understand past price movements and levels on your chart, aiding in your trading decisions.