Whether the document allows copying when unlocked with the user password. The value of this key must be a CFBoolean object. The default value of this key is kCFBooleanTrue.
Available in Mac OS X v10.4 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)