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

One of the four process colors of ink, or CMYK. Here the Y is for yellow.

Used to describe how many similar pieces can be printed on a larger sheet; two up, four up, etc.

The stapling of sheets (or signatures) on the side nearest to the spine.

The placement of two or more printed images in exact alignment with each other.

A process of binding books whereby holes are drilled on the spine, and a plastic grasping device is inserted to contain the pages together.

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.