ReadonlydownThe down area of the user interface.
Optional ReadonlyfreshReadonlyleftThe left area of the user interface.
ReadonlymainThe main area of the user interface.
ReadonlyrelativeThe relatives sizes of the areas of the user interface.
ReadonlyrightThe right area of the user interface.
ReadonlytopThe top area of the user interface.
A description of the application's user interface layout.