Interesting problem – I will look into including this feature into the next nvPRNq. Currently you can add the books path, etc – but only through a template. It could be added programmatic by using a procedure to make a file to be appended to the header or footer.
The “Block Print” is a raw print command. However you could do it now, with either NewViews or nvPRNq – by using a procedure to do the “block print” for you AND to make life simpler – connect the procedure to an FKEY.