iOSLayoutContent
From Xojo Documentation
Interface
Identifies iOS UI layouts that can be used as a screen.
Notes
A layout can contain a single Screen, an iOSSplitView (consisting of a main view and a detail view) or an iOSTabBar, which consists of multiple screens.
Because iOSLayoutContent is an interface, you will not work with it directly. You will instead work with the classes that implement it: iOSSplitView, iOSTabBar and MobileScreen.
See Also
iOSSplitView, iOSTabBar, MobileScreen classes; iOSScreenContent interface