Running GameEx Arcade (v18.62, not current I know) and I'm working to add a second 24" 'supermarket LCD' screen to dynamically display marquees. Overall, it's working just fine except that some (most?) marquees don't fill the display. The native resolution of the display is 1920x320 and I noticed that marquees that are 1200x<300 (where <300 is in the 260-290 range) will fill the display. But ones that are over 300 px tall won't.  I looked for rules on how GameEx or MAME wanted to see