Hello again,
I did a search but it seems that this topic hasn't been explained in great details and I apologize if it has already.
Basically when mouseMoved function kicks in, there is a change of how many units the mouse has moved.
Now if I try to debug the mouse state, there are a bunch of X/Y/Z.abs and .rel values. I know Z signifies the scroll, X should be horizontal and Y for vertical movements.
I don't exactly understand what the abs and rel mean. Also, an example would greatly help.