Levels

I looked around and found advice for making levels.
I dont want to make the next level in a separate file as that would mean remaking my actors.
Ive been looking into the smiley catch activation regions thing.
I cant tell how the regions help with the changing screen.
To me it just looks like it is moving the view.
Please explain.
I dont want to make the next level in a separate file as that would mean remaking my actors.
Ive been looking into the smiley catch activation regions thing.
I cant tell how the regions help with the changing screen.
To me it just looks like it is moving the view.
Please explain.