What is the definition of Pdf Engineering?

"PDF engineering" is like the high-tech, ultra-secret, and utterly baffling world where documents are transformed from their ordinary paper-thin selves into digital powerhouses. It's the kind of engineering that requires a PhD in cryptography and a Master's in digital obsession. Imagine if someone decided to create a PDF so complex, it needs a team of certified cryptanalysts to crack the code before they can even open it.

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Now, here's an unsettling example sentence: "The forensic team analyzed the PDF engineering of the missing CEO's last will and testament, only to find out it was encoded in a language only decipherable by a 3D printer."