Folded leaflet

Folded leaflets are usually used for advertising or marketing purposes, or for information supplementary to labels.

Although it is difficult to put a date on when some of these folds were first used, it is evident that their popularity boomed when the first mass production printers were introduced.

In bookbinding a leporello binding has its pages concertina-folded, as above, but also has front and back boards so that it can be handled like a normal book.

The origin of the word is based on the manservant in Mozart's Don Giovanni.

At one point in the opera, Leporello unfolds a lengthy concertina list of his master's conquests.