Thanks for the reply.
I figured that it would be an easy thing to find, so did not initiate a call with Canon's eSupport.
The reason that it was not easy to find is that punching via PCL is not supported on the 5570. It can be done with PJL, so the customer will just have to learn to use PJL. It's not that different from PCL any way.
Thanks again for the quick reply.
Steve