This is the opening of a purchase transaction in your terminal. To "take a long position", you need to click on "New Order" on the top panel above the price chart and then, in the dialogue box, select the “buy” button. Please note that your purchase transaction will start with a price that is a little lower than what you see on the chart, with Ask prices (see). At the beginning of the transaction you will have a small loss, do not worry, it is the broker's commission, which is called the "spread" (see). "Long" position in purchasing so called because prices in the market Forex (see) tend to grow slowly and drop quickly. Therefore, to make a purchase, the trader has to wait longer than if he pressed «Sell». For the same reason, a deal to sell on the contrary of these principles is called the short position (see).