On the WCP 255, you're going to have to open each document in order to print them - unfortunately there's no way around that. I would like to try and help you with what you are trying to accomplish outside of that though. Printing with slip sheets - can you tell me more about the job(s) that you are running? For instance, how often are you wanting to insert a slip sheet? How many jobs/documents are there in total? Once I have that information, I can make suggestions for how to make it work.