How an image on one side of a printed sheet adjusts with the image on the other side.

Zipping a file compresses one or more files into a smaller archive. It takes up less hard drive space as well as less time to transfer across a network or the internet.

A very shiny as well as durable high gloss coating applied to printed material. Used as a liquid then cured with ultraviolet light.

A printed sheet with more than one page on it that is folded so that as in a book the pages are in their proper numbered sequence.

Any kind of cross marks or other symbols applied to a press sheet to assure proper registration.

Abbreviation of Pantone Color Matching System.

An erroneous variation of the word “set-off”. When printed, ink that is unintentionally transferred from a printed sheet to the back of the sheet above it as the pieces is stacked in a pile.

The increase of space between typeset letters.

Envelopes in place of a stamp, an image and/or text pre-printed on mailing.

To meet in the center, a three or four panel folds where the two outside panels fold inward. There are three panels in an open gate fold, the bottom of which is twice the size of the folded panels. There are four panels of more or less equal size in a closed gate fold where the outer panels are folded inward together.