[@Aisling] "I've got a catalogue of them on that PC that is standing right over there," Dracula answered. "Those stickers on the books are the code where they stand. They all start with two to three letters, followed by a bunch of numbers. If, for example, the code says, 'Ecl 250', I go to section E and search it until I get to 'Ecl'. It's the 250th book in that part of section E."