Now for my contributions: This is not really that much. One thing is that you can drag windows out of the screen. This is actually less than it may look because it is primarily a job layers has to do, and layers was already modified quite a while ago to support this service. Intuition was only modified to make use of this service, and its "window movement" functions where adjusted for testing the window bounds differently if the feature is enabled. This is by default on the workbench, but not on custom screens, but every constom screen can request it by a flag or a tag.
What is the best way to detect if this feature is enabled or not? Using the library version or checking this flag?
Is there any documentation or updated include files on this?
Steve