All original copy, including type, photos and illustrations, intended for printing. Also called art.

ISO paper size 210 x 297mm used for Letterhead.

Any change made by the customer after copy or artwork has been given to the service bureau, separator or printer. The change could be in copy, specifications or both. Also called AA, author alteration and customer alteration.

At the proofing stage, changes that the client requests to be made concerning original art provided. AA's are considered an additional cost to the client usually.