the binding structure; and polyester film strips, which help to secure open leaves. Textblock supports are best used in conjunction with book cradles where the textblock is greater than 1/2 inch, or where the textblock noticeably sags. Regardless of its method of support, however, it is worth noting that any book that is kept open for long periods can cause damage. One should turn an exhibited book's pages every few days in order to protect pages from overexposure to light and spread any strain on the binding structure. Security Because exhibited items are often of special interest, they demand a high level of security to reduce the risk of loss from theft or vandalism. Exhibition cases should be securely locked. In addition, cases may be glazed with a material that hinders penetration and that when broken does not risk shards of glass falling on the exhibits. Whenever possible, the exhibition area should be patrolled; a 24-hour security presence is recommended when precious treasures are exhibited. Finally, the exhibition is best protected when equipped with intruder alarms, which can be fitted at entry points to the building and internal areas. See also Arts festival Exhibition history List of museums Art gallery Notes References O'Doherty, Brian and McEvilley, Thomas (1999). Inside the White Cube: The Ideology of the Gallery Space. University of California Press, Expanded edition. . New York School Abstract Expressionists Artists Choice by Artists, New York School Press, 2000. . National Information Standards Organization. Environmental Conditions for Exhibiting Library and Archival Materials. Bethesda, MD: NISO Press, 2001. National Preservation Office. Guidance for Exhibiting Library and Archive Materials. Preservation Management Series. London: British Library, 2000. Francis Haskell, The Ephemeral Museum: Old Master Paintings in the Rise of Art Exhibition, Yale University, 2000. Bruce Altshuler, Salon to Biennial: Exhibitions That Made Art History. Volume I: 1863–1959, Phaidon Editors, 2008. Bruce Altshuler, Biennials and Beyond: Exhibitions That Made Art History. Volume II: 1962–2002, Phaidon Editors, 2013. Where Art Worlds Meet: Multiple Modernities and the Global Salon, ed. Robert Storr, Marsilio, 2005. What Makes a Great Exhibition, ed. Paula Marincola, Philadelphia Exhibitions Initiative, 2006. Hans Ulrich Obrist, A Brief History of Curating, Zurich-Dijon, 2008. External links Art Week, 40 years for Art Exhibition 9 tips to help you prepare your first art exhibition OpenArt - Magazine about Art Exhibitions in India and worldwide