Do not ask why this is called by this name. It just is. Thanks for understanding.
So, this script is being used to be able to freely move the camera around the map, by moving the mouse to the edge of the screen. By doing that, it will move the camera in the mouses direction.

First are the variables. The public floats are the scroll offset and speed, so that I can change the speed of the camera easily. Then there is the mouse direction.

Yah, this is late update stuff. This is mainly used on camera movement, as the character may move. So it is definitely useful for this game. It will be called after the Update function.

Now this is the chunky mouse boy. This is where the variables of the mouse position is given. With each part, it says that if the mouse is going in a certain direction from the scroll offset, it will move the camera using speed, delta time and the world as the area. It then just does the opposite for the other direction. This is the same for the both x and y direction.