a handhold. All elements fit in a plastic envelope for travel and to permit a pause in the game. Plastic letters are very small and tend to lose their grip if not placed with slight lateral movement and if they are not perfectly clean. The game format is extremely small, allowing Scrabble games for backpackers and others concerned about weight and size. Hasbro Games, 2001 – hinged plastic board with clear tile-shaped depressions to hold tiles in play. Board is in a black, zippered folio such that board and tiles may be folded for travel, even with the game in play. The reverse side of the board contains numbered mounts for racks, holding tiles face down, allowing secure and confidential storage of tiles while a game is paused. Some versions have tile racks with individual tile slots, thus not permitting easy sorting of tiles in a rack. The board, when opened up, measures , and the tiles are in size. Deluxe editions At the opposite end, some "deluxe" or "prestige" editions offer superior materials and features. These include editions on a rotating turntable, so players can always face the board, with the letters upright and a raised grid that holds the tiles in place. Also available are alternative Scrabble boards, often made of glass or hardwood, that have superior rotating mechanisms and personalized graphics. Large print and braille editions An edition has been released (in association with the Royal National Institute of Blind People (RNIB)) with a larger board and letters for players with impaired vision. The colours on the board are more contrasting, and the font size has been increased from 16 to 24 point. The tiles are in bold 48 point, and have braille labels. A separate braille edition is also available. Works related to Scrabble Books Numerous books about Scrabble have been published, including nonfiction titles helping players improve their game, and fiction titles using the game as a plot device. These include: Merriam-Webster's The Official Scrabble Player's Dictionary, the Sixth Edition of which was published in 2018. The OSPD is the consistently best-selling official Scrabble book. Word Freak by Stefan Fatsis (2001), an introduction to tournament Scrabble and its players. While writing the book, Fatsis became a high-rated tournament player. The Scrabble Player's Handbook, edited by Stewart Holden and Kenji Matsumoto, and written by an international group of tournament players, which gives the information a serious