CFDs are a leverage product and can involve a significant risk of loss. Trading CFDs may not be suitable for all, therefore you should ensure that you understand the risks involved and take into account your individual circumstances.
Trader's Glossary

What is Closing Order?

A closing order is an order to automatically close an open position when an asset’s price reaches a predefined level. Closing orders are employed to automatically lock profits in or prevent losing positions from unnecessarily eating into risk capital.