Fold type - The type of fold required to finish a piece.
Folder - A bindery machine dedicated to folding printed materials. Also known as a folding machine.
Accordion fold - Two or more parallel folds which open like an accordion. Also known as a Z fold.
French fold - A sheet of paper printed on one side, folded once vertically and once horizontally to make a four-page or eight-page brochure.
Gate fold - A sheet that folds where each side folds toward the gutter in overlapping layers.
Letter fold - Two folds creating three panels that allow a sheet of letterhead to fit a business envelope. Also called barrel fold or wrap around fold.
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