The item handles of the registry's screens whose edges open the screen Id
— what the origin of a screen opened from an item is (the item; its host is
the frame below). Every handle of the screen has these beside
ScreenOpenersOf as its origin, and its back() is the frame below
either: the openers' screens.
The item handles of the registry's screens whose edges open the screen
Id— what theoriginof a screen opened from an item is (the item; its host is the frame below). Every handle of the screen has these beside ScreenOpenersOf as itsorigin, and itsback()is the frame below either: the openers' screens.