what the Trailing stop function do??

[The Xlearner]

Hello everybody,  i'm new here in this big world,  i start learning the mql4 programming in this days with Jim Dandy,  but i didn't understand the trailing stop function goal,  can someone help me to understand how's its work,  and thanks

[[Deleted]]

HI DEAR ,you doing great and i provided som courses to help you and let me know if you need more info

[The Xlearner]

No that's it