From Xojo Documentation


New in 2019r2

The initial locations at which the window could open.


Enum Description
Default The default placement based upon the OS. Often this is Staggered.
ParentWindow Over the parent window if it opens another window.
MainScreen On the primary or main screen on a multi-screen setup.
ParentWindowScreen On the same screen as the parent window in a multi-screen setup.
Staggered New windows open slightly offset to the top and left from previously opened windows.