Term definition for: 13.5_d - Displayed as "23 by 13 inches (folded booklet")

This form is 23 inches wide and 13.5 inches long. Usually, 13.5 inch long paper is used in Europe. The paper is double-width, and used for embossers that can emboss double-width sized pages (i.e., 4 interpoint braille pages) on one sheet of paper called a folio.