Move to a Layer?

What is the difference between a character moving to a layer and a character at a layer? For example,
@BRIANA spot 1.000 88 349 in zone 2 AND BRIANA faces right AND BRIANA moves to layer 2
@BRIANA spot 1.000 88 349 in zone 2 at layer 2 AND BRIANA faces right

Well, a character could be at say layer 1 but you want them to move to layer 2 so you use @CHARACTER moves to layer 2

But if you wanted a character at a layer from the beginning, then you would use the @CHARACTER is at layer 2

But Idk, I think ; though, you can just use @CHARACTER moves to layer 2

I apologize if I’m wrong, I just wanted to try to help, you should probably get another person’s opinion because I’m still pretty new.

They are basically the same thing. One is just a command just for changing the layer.