Concertina fold

Folding method to store long paper or foil webs in a zigzag manner in stacks (rather than wind on a roll). Used for labels in IT (computer labels). See also zigzag folding. In German, the word Leporello is used, coming from the name of the servant in the opera Don Giovanni, who has a folded list of liaisons in a zigzag form. See also Folding labels.