To make a region span multiple monitors, create a region big enough to cover
them all, e.g. screen[1]:2048x768+0+0 makes the region span two monitors with
1024x768 resolution sitting one next to the other.
To make a region span multiple monitors, create a region big enough to cover
them all, e.g. screen[1]:2048x768+0+0 makes the region span two monitors with
1024x768 resolution sitting one next to the other.