code: function sc_delete(o, l) {
      var dummy = { cdr : null };
      var tail = dummy;
      while (l !== null) {
  	if (!sc_isEqual(l.car, o)) {
  	    tail.cdr = sc_cons(l.car, null);
  	    tail = tail.cdr;
  	}
  	l = l.cdr;
      }
      return dummy.cdr;
  }
docs: * META ((export #t))