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 Signal Line?

Used in technical analysis, signal lines normally consist of moving averages used in combination with other technical indicators in order to generate buy or sell signals. Buy signals are usually triggered when a signal line is crossed upwards by the indicator in question and sell signals are triggered when it is crossed downwards.