Safe_Margin is the amount of margin in your trading account that you do not want used. Safe_Margin is set in percentages. 20% to 30% is sufficient for an account with 200:1 leverage. If you are using a trading account with 100:1 leverage, consider setting Safe_Margin to 10% - 15%. If you are using a trading account with 500:1 leverage, consider setting Safe_Margin to 50% - 75%. This will prevent the account from hitting a margin call.