The Screen itself, not the character. The Screen goes to the right if your character goes left.
Following my explaination above, the character would now be in the New Room.

*=guy

step (1)
<door><*oldroom><door>

step(2)
<*door><oldroom><door>

step(3)
<door><*door><oldroom>
(note how oldroom shifts RIGHT)

step(4)
<*newroom><door><door>
(oldroom disappears off right side)

step(5)
<door><*newroom><door>

See how the screen shifts off to the right? the new screen also shifts to the right (from off screen left to the middle)

Again, tough to explain, but that's how it works.



It's hard to visualize, but that's how RPG maker works. Check the tutorial (really it's just a small, thrown-together game that uses this effect.. you can check the events yourself.)