Extra page that may be pasted or folded into a book or booklet.

Gatefold sheet bound into a publication, often used for a map or chart. Also called gatefold and pullout. Folio (page number) The actual page number in a publication.

A bindery term referring to a multi-panel folded sheet bound into a publication, often used for a map or chart.

an oversize page that is folded in to a book or magazine

A page that exceeds the dimensions of a single page. It is folded to page size and included in the book, sometimes bound in and sometimes tipped in (pasted).