https://github.com/mickelson/attract/blob/v2.6.1/Layouts.md
I think rompath in emualator file can contains Multiple dirs split by semicolon. I want new powershell to build this stuff better.
Tweak At-The-Arcade Multi-Cab for horizontal layout. (Flex is tweaked for vertical)
fe.add_artwork( label, x, y, w, h )
"snap", "marquee", "flyer", "wheel", and "fanart"
https://github.com/mickelson/attract/blob/v2.6.1/Layouts.md#add_artwork