From Xojo Documentation
| This item was deprecated in version 2019r2.
Please use Window.DefaultLocation as a replacement.
Property (As Integer )
The location where the Document window will be placed when it opens.
Placement can take on the following values:
|0||Default||What the OS would normally do, which may often be the same as Stagger.|
|1||Parent Window||Over the parent window if it opens another window.|
|2||Main Screen||On the primary or main screen on a multi-screen setup.|
|3||Parent Window Screen||On the same screen as the parent window in a multi-screen setup.|
|4||Stagger||New windows open slightly offset to the top and left from previously opened windows.|