I'd like to modify the maps used by UOSteam slightly, is there an easy way to do that? I'm not sure where the Steam maps are stored because they aren't regular image files. Or do they use the default UO .mul files?
Whatever the case, what I'd like to do is add a grid pattern in some areas directly onto the map. No script, no addon, just changing the maps directly. When searching for an idoc in places like Yew it would be helpful to have a grid appear on the maps so that I don't miss areas. I could also "fade" areas where no houses are possible and place markers where lone houses are, like on Justice Isle.