Default value: nil

When non- nil , the value post-delivery-function should be a function designator for a function of one argument:

post-delivery-function successp

The system calls post-delivery-function after delivery. successp is true if delivery was successful and false otherwise.

Note: during the delivery process, the Lisp system can be in an unstable state, so it is not always possible to recover when delivery is not successful.

LispWorks Delivery User Guide - 14 Mar 2008