Orders on a cryptocurrency exchange are exchange requests that users send to the server.
Different types of orders have different execution procedures. In one case, the operation is completed
immediately at the current rate, while in others it is postponed until certain conditions are met.

On a trading platform FREE2EX the following types of orders are used:

• Market - market orders to instantly execute buy or sell an asset at the best current market price. 

• Limit - pending orders for execution on specified conditions and which form the "order book":

• Limit - a pending order to buy or sell an asset at a specified price or better.

• Stop - a pending order to buy or sell an asset at a specified price or worse.

• Stop-limit  - a combination of Stop + Limit orders.

Market order (Market)

For example, if the BTC/USD pair is selected, "Buy" means buying BTC for USD.

Limit order – is an order with a specific buy or sell price.

It is the limit orders that form the order book. Limit orders are used to buy at a lower price
or to sell at a higher price relative to the market. Use this type of order if you are willing to
wait for the asset price to reach the desired level.

To place a limit order, you must specify not only the desired volume but also the price.
After placing the order, it will be placed in the order stack and will remain there until
there are counteroffers at a suitable price.

Stop-limit order – is a combination of Stop+Limit orders. It is an order to buy or sell an asset
at a limit price in case the value of your asset in the market has reached the specified price or worse. 

It is good to use it, for example, in anticipation of a rally and further price pullback to previous
levels. Stop price is set worse than the market, Limit price - better than the "new"
market of the stop order. 

You also have the option to set a time by which your order can be executed or will be
canceled if the condition is not met (Good till date). If you do not set a time, your order
will wait for execution and will not be canceled after some time (Good till canceled).

"One Cancel Other" order

OCO orders are only available on Leverage-Net and Spot accounts.

OCO - One Cancel Other  — combines one order with another, but only one of the orders
can be executed. In other words, as soon as one of the orders is fully or partially executed,
the remaining order will be automatically canceled. Canceling one of the orders (by client
request or GTD option) will also cancel the other.

To link a pair of orders, the following conditions must be met:

• Same trading instrument (pair);

• Orders: Limit-Stop and Stop-Stop;

• An already linked order cannot be linked to a third order;

• For a Limit-Stop pair, the buy price must be less than the sell price; 

• None of the orders can have an Immediate Or Cancel option.
  

In order to use this order, you need to follow these steps:

1. Select the type of the first order (Limit or Stop).

 2. Select BUY or SELL.

 3. Specify the quantity required.

 4. Specify the desired exchange rate.

 5. You can select the visible volume to be displayed in the order book.

 6. Select the type of the second order and set the desired conditions as in (2-5).

 7. Select the expiration date of the order: 
- Good Till Canceled (GTC) - until canceled by the user.

- Good Till Date (GTD) - select a specific closing date and time.
8. Place an order.

"One Triggers Another" order

OTA – One Triggers Another — is a type of advanced conditional orders, when the second order is executed only after the first order is executed.

OTA strategy features:

• Order 1 and Order 2 work on the same trading instrument (pair): if Order 1 has been executed, Order 2 will be placed on the same trading instrument.

• The volumes of Order 2 and Order 1 are the same. 

• If Order 1 has been canceled, Order 2 will also be canceled.

• If you cancel Order 2, it will be placed as a separate order (outside the strategy).

• An OTA strategy can be added to a regular order (you can do it in the list of active orders).

• The OTA strategy cannot be linked to other strategies.

• On the OTA chart, an order can only be modified by dragging it or by making changes in the "Modify" box. OTA order on the chart cannot be deleted.

In order to use this order, you need to perform the following actions:
1. Select the type of the first order (Order Trigger) (Limit или Stop).

2. Select BUY or SELL.

3. Specify the quantity of the asset.

4. Specify the desired exchange rate.

5. You can select the desired volume to be displayed in the order book.

6. Select the period of validity of the order:
- Good Till Canceled (GTC) - until canceled by the user.
- Good Till Date (GTD) - select a specific closing date and time.

7. Select the type of the second order (Order-to-Open) and set the desired
conditions as in (2-6).
8. Place the order.