"E-Trailing" EA

I was wondering for the “E-Trailing” Expert Advisor, what do the “Trailing Stop” & “Trailing Step” functions actually mean? Can someone please explain these functions for me in more detail? Thanks!

I don’t know the exact meaning, but generally speaking it means when price foes in ur direction by X amount of pips, your Stop loss will reduce by X amount of pips. And so on and so forth.

So is the “Trailing Stop” figure the number of pips or is the “Trailing Step” figure the number of pips in your direction? Thank you!