How to include book called INT (Introduction to Bible)?

I’m trying to include the book INT, between table of contents, and GEN to REV. How do I accomplish this? Putting INT as the first book, before GEN, does nothing.

Am I correct in assuming that you’ve added it to the list of books to be printed, like this?

And if so, are you saying that nothing from INT shows up? That seems strange. Are you able to send a small archive file to the usual ( ptxprint _ support at ) address. No need to include all the GEN-REV books; just a few smaller ones and the INT book should be adequate.

Thank you. I have done so, sent you three shorter books with the INT in a zip file.