Sets the substitutions panel’s accessory view.
- macOS 10.6+
The accessory view controller or
nilif there is none.
The accessory view controller can accommodate any custom view you want to display with the substitutions panel. The accessory view controller’s view is displayed below the substitutions list and the panel automatically resizes to accommodate the accessory view.
This method posts a notification named
did with the substitutions panel object to the default notification center.