Paper Sizes - The ISO range of A, B and C sizes is used in Europe. A4 is the most common size of sheet used for office stationery. It measures 210x297mm and is approximately the size of most magazines. In practice, consumer magazines are printed on large presses that use large reels of paper - webs. The printed paper is cut, folded and trimmed, so the actual size of a magazine page varies between titles. Short-run magazine are produced on presses that are fed with RA or SRA sheets, each of which is slightly larger to allow for gripping, ink bleeding and trimming. So SRA3 trims down to A3 size. US titles are still based on the Imperial measurement system of feet and inches.

Periodical - A publication circulated at regular intervals, such as a weekly or monthly

Periodical Publishers Association (PPA) - Trade body representing magazine publishers in the UK.

PostScript - Computer language for describing images as mathematical curves. Trademark of Adobe.

Proof - Evidence provided in the form of a copy of a page to demonstrate that work has been carried out as specified.

Proofreading - The checking of proofs to ensure writers and designers work has been accurately carried out.

Publication - publication means the act of publishing, and it also means any writing of which copies are published, and any website. Among publications are books, and periodicals, the latter including magazines, scholarly journals, and newspapers.

Publication - A newspaper, magazine, or newsletter with information, news, and feature stories, usually produced to be sold or as a service to members of associations or organizations.

Publisher - 1. the person responsible for the profitability of a publication or 2. a publishing company.

Pull Quote - Phrase or sentence taken from an article and used to attract a reader's attention by setting it in a larger type size.