This section contains instructions for performing additional,
more-advanced and/or less commonly performed DPCL programming tasks.
These additional DPCL programming tasks are described in three
Chapter 16, Overriding default system callbacks describes how an application can create callback routines to
handle unexpected system events such as a DPCL daemon exiting or a target
application process terminating. These callbacks then replace the
default system callbacks which merely print out an error message.