Hi Folks,
I've just finished writing a book about the PDF file format, which you
can learn about here:
http://shop.oreilly.com/product/0636920021483.do
Or at Amazon and other booksellers. There are free previews, and the
book is available in print, or as an ebook. Sample code is available
from the website.
With Thanks,
John Whitington
Coherent Graphics Ltd