A Boolean value that indicates whether the window tries to optimize user-initiated resize operations by preserving the content of views that have not changed.
The value of this property is YES if the window tries to optimize live resize operations by preserving the content of views that have not moved; otherwise, NO. By default, live-resize optimization is turned on.
When live-resize optimization is active, the window redraws only those views that moved (or do not support this optimization) during a live resize operation. You might consider disabling this optimization for the window if none of the window’s contained views can take advantage of it. Disabling the optimization for the window prevents it from checking each view to see if the optimization is supported.
This action method toggles the size and location of the window between its standard state (provided by the application as the “best” size to display the window’s data) and its user state (a new size and location the user may have set by moving or resizing the window).