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Interface configuration
The “PriceStep” column in the “MarketsTable” is a price step (the first value is the price step on the current pair, the second value is the price step on the BTS pair). That is, you can estimate how square a coin is. On USDT there are no square coins, but on BTC there are a lot of coins with very big step of price, and it is visually displayed in order book, that is why such coins are called “square”.