valid_object - allows control over which objects can be loaded int valid_object( object obj ); After loading an object, the driver will call valid_object() with the newly created object as its argument, in the master object. If the function exists, and returns 0, then the object will be destructed and the efun that caused it to load will error out. If it does not exist, or returns 1, then loading will proceed as normal. This is called before the object has a chance to execute any code, including create(), so not much should be assumed about the object except that file_name(obj) is valid. See also: valid_override