682:/std/receptacle.c (/std/receptacle.c)
(public void) set_cf(object obj)
/*
 * Function name: set_cf
 * Description  : Allows you to specify an object that holds code that is
 *                called before you try to open a specific object. This code
 *                will be called with:
 *                  open() and
 *                  close()
 *                These functions should return 1 if it is not possible to
 *                open/close the container and 0 if it is oke to manipulate
 *                it.
 * Arguments    : object obj - the object specifying the code.
 */
