MT4系统客户端允许准备请求并请求代理执行交易操作。终端使用了以下的命令：市场秩序、待定秩序、止损和获利。mt4 Client terminal allows to prepare requests and request the broker for execution of trading operations. The following orders are used in the terminal: Market order, Pending order, Stop Loss and Take Profit.
市场秩序是一个承诺，经纪公司以目前的价格购买或出售一个安全。此订单的执行结果在一个贸易位置的开幕。证券以卖出价买入，以买入价卖出。止损，并采取利润订单（下文所述）可以连接到一个市场秩序。Market order is a commitment to the brokerage company to buy or sell a security at the current price. Execution of this order results in opening of a trade position. Securities are bought at ASK price and sold at BID price. Stop Loss and Take Profit orders (described below) can be attached to a market order.
悬而未决的订单是客户的承诺，经纪公司购买或出售一个安全在一个预先定义的价格在未来。Pending order is the client’s commitment to the brokerage company to buy or sell a security at a pre-defined price in the future.
这个命令是用来减少损失，如果安全价格已经开始在一个不赚钱的方向。如果安全价格达到这个水平，该位置将自动关闭。这样的命令总是连接到一个开放的位置或挂起的顺序。经纪公司只能将他们放在一个市场或一个待定的订单。This order is used for minimizing of losses if the security price has started to move in an unprofitable direction. If the security price reaches this level, the position will be closed automatically. Such orders are always connected to an open position or a pending order. The brokerage company can place them only together with a market or a pending order.
当证券价格达到一定水平时，采取利润指令是为了获得利润。此订单的执行结果在关闭的位置。它总是连接到一个开放的位置或挂起的顺序。该命令可以只要求与市场或挂起的订单。Take Profit order is intended for gaining the profit when the security price has reached a certain level. Execution of this order results in closing of the position. It is always connected to an open position or a pending order. The order can be requested only together with a market or a pending order.