A Boolean value that indicates whether the extension-hiding checkbox is visible and checked.
Use this property to determine whether to display filename extensions. When the value of this property is
YES, include the filename extension in places where you refer to the file by name.
AppKit saves the state of this checkbox on a per-application basis. Setting this property has no effect if the user has chosen to show all file extensions in Finder.
Configuring the Panel's Behavior
A Boolean value that indicates whether the panel displays UI for creating directories.
A Boolean value that indicates whether the panel displays UI for hiding or showing filename extensions.
A Boolean value that indicates whether the panel displays files that are normally hidden from the user.
A Boolean value that indicates whether whether the panel is expanded.
Button tags that refer to items on the panel.