Yup.
Also, I'm not sure how to add maps yet, the only thing I know is to add another exe section but the rest is a mystery for me. I have to look that up, if there is no one who is able to help me with that.
Anyway, have a screenshot or two:
I can't show you that with screenshots but all the backgrounds scroll like they would do in game. (Autoscrolling is also possible)
You are also able to disable backgrounds and/or scrolling if you want.
Also, NPCs are displayed using the NPC Framerects from the exe file, means if you edit something, SW will display something else. (Assuming you will write code that is simular to the one in the exe)