It is a range of amounts for customers to set the price they want to sell or buy at and buy or sell within that price range. By using Choja, you can make profit by waiting for the market price to change by a specified range for each currency, selling at a higher price and buying back at a lower price. For example, if you specify a balance of 2%, you will sell when the market price of the currency rises by 2% and buy back when it falls by 2%. By reducing the amount of currency that has risen and increasing the amount of currency that has fallen, profits can be made.