For example, if you buy at 1.3000, the original stop loss was set at 1.2900, and then the price rose to 1.3200. At this time, you can manually change the stop loss to 1.3 150, so it will be better if the market continues to rise. If you immediately turn around and stop the stop loss, you will also have 65430.
If it continues to rise to 1.3300, you can set the stop loss at 1.3250, thus ensuring a profit of 250, which is called trailing stop.
If you use a script, you can automatically trailing stop, and you can stop reading it after setting it.
However, trailing stop is a method that only beginners can use. This fully reflects the greed of traders, which is a taboo. At the same time, it also shows that he basically has no judgment on the market and doesn't know where the resistance is.
Professionals will calculate the stop loss position before placing an order and will not temporarily modify it.