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Acid free paper is made from pulp containing little or no acid so it resists deterioration from age. Also called alkaline paper, archival paper, neutral pH paper, permanent paper and thesis paper.

Additive Color is color that is producted by colored light, such as an image on a computer monitor. The primary colors that make up additive colors are red, green and blue.

A binding made of single sheets stuck together at the back with glue or paste. The most common form is known as perfect binding.

Any change made by the customer after copy or artwork has been given to the printer. The change could be in copy, specifications or both. Also called AA, author alteration and customer alteration. There is often a charge for alterations after a proof has been approved.

A water based coating applied like ink by a printing press to protect and enhance the printing underneath.  Aqueos coating is often used to instantly seal in ink so that the paper can be immediately folded and handled without damaging or smearing the ink that is still wet. It comes comes in various finishes such as gloss, dull, and soft touch.

Authors alterations or AA's are changes that the client requests to be made concerning original art provided. AA's are usualy considered an additional cost especialy when they come after the proof has been approved.