"This is the library's killswitch," she explained. "In an emergency, we can use it to generate a hyperglyphic field that turns the Roman alphabet inside-out within a quarter-mile radius.”
“Christ. What would we ever need to use something like that for?"
"Fiction and non-fiction must be kept separate at all costs," she let her fingernails dance across the control panel, lightly tapping its buttons, but not actually pressing them. “As librarians, if we notice them becoming too deeply entangled, we have to take immediate action, or risk the possibility of a breach between them.”
Fiction must also be properly stored, or else it will grow restless.