Paper × 841 mm). A1 is half the size of a sheet of A0 (i.e., 594 mm × 841 mm), such that two sheets of A1 placed side by side are equal to one sheet of A0. A2 is half the size of a sheet of A1, and so forth. Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets). The density of paper ranges from for tissue paper to for some speciality paper. Printing paper is about . Paper may be classified into seven categories: Some paper types include:
Tony White (writer) for a British Interactive Media Association (BIMA)award in 2011. In 1994, White founded artist's book imprint Piece of Paper Press, and has invited artists and writers, (including Liliane Lijn, Pavel Büchler, Tim Etchells, Elizabeth Magill, and Alison Turnbull) to create books made from a single sheet of A4 paper, folded three times, stapled and cut to produce an A7, 16-page, photocopied edition. Several of these artists' books are included within Arnolfini's collection of artists' books held at Bristol Archives. He was Arts Council England Interdisciplinary Arts Officer between 1999 and 2007, overseeing the "Pioneers in Art and Science" DVD series,