I look at PDF like a virtual sheet of paper. Once you "print" to it, abandon any hope of getting things back out.
This sounds like a bad thing, but we need some kind of way to say "this is the final presentation no matter what".
This sounds like a bad thing, but we need some kind of way to say "this is the final presentation no matter what".
Reminds me of how Adobe Illustrator files were also pdf files and you could view them as PDFs when you rename the extension to .pdf. (this might also apply to Photoshop .psd files)