What is the definition of Manuals Fumes?

"Manuals fumes" is like the stale, sulfurous byproduct of a poorly ventilated tech workshop where your trusty guidebook has become a noxious cloud. Imagine it: "After hours of battling the evil Dr. Byte, I finally got my computer to restart, but it let out a 'Manuals fumes' warning that sent my internet connection into a full-blown panic attack."